A big γ-ray burst at a redshift of z ≈ 8.2 (2009)
Tanvir, N. R., Fox, D. B., Levan, A. J., Berger, E., Wiersema, K., Fynbo, J. P. U., ...
4 pages, 3 figures.-- ArXiv pre-print available at: http://arxiv.org/abs/0906.1577
A γ-ray burst at a redshift of z ≈ 8.2 (2009)
Tanvir, N. R., Fox , D. B., Levan, A. J., Berger, E., Wiersema, K., Fynbo, J. P. U., ...
Long-duration γ-ray bursts (GRBs) are thought to result from the explosions of certain massive stars, and some are bright enough that they should be observable out to redshifts of z > 20 using...
PKS 0537-286, carrying the information of the environment of SMBHs in the early Universe (2009)
Bottacini, E., Ajello, M., Greiner, J., Pian, E., Rau, A., Palazzi, E., ...
We present the results of a multifrequency campaign on the high-redshift (z = 3.1) blazar PKS 0537-286. The source was observed at different epochs from 2006 to 2008 with INTEGRAL and Swift, and...
Greiner, J., Schwarz, R., Tappert, C., Mennickent, R. E., Reinsch, K., Sala, G.
We summarize our optical monitoring program of VY Scl stars with the SMARTS telescopes, and triggered X-ray as well as optical observations after/during state transitions of V504 Cen and VY Scl.
Testing GRB models with the strange afterglow of GRB 090102 (2009)
Gendre, B., Klotz, A., Palazzi, E., Kruhler, T., Covino, S., Afonso, P., ...
We present the observations of the afterglow of gamma-ray burst GRB 090102. We use optical data taken by the TAROT, REM, GROND, Palomar and NOT telescopes, and X-ray data taken by the XRT instrument...
The bright optical/NIR afterglow of the faint GRB 080710 - Evidence for a jet viewed off axis (2009)
Krühler, T., Greiner, J., Afonso, P., Burlon, D., Clemens, C., Filgas, R., ...
We investigate the optical/near-infrared light curve of the afterglow of GRB 080710 in the context of rising afterglows. Optical and near-infrared photometry was performed using the seven channel...
Komossa, S., Zhou, H., Rau, A., Dopita, M., Gal-Yam, A., Greiner, J., ...
The galaxy SDSSJ095209.56+214313.3 (SDSSJ0952+2143 hereafter) showed remarkable emission-line and continuum properties and strong emission-line variability first reported in 2008 (Paper I). The...
Time resolved spectral behavior of bright BATSE precursors (2009)
Burlon, D., Ghirlanda, G., Ghisellini, G., Greiner, J., Celotti, A.
Aims: Gamma Ray Bursts (GRBs) are sometimes preceded by dimmer emission episodes, called "precursors", whose nature is still a puzzle: they could either have the same origin as the main emission...
The evolution of Swift/BAT blazars and the origin of the MeV background (2009)
Ajello, M., Costamante, L., Sambruna, R. M., Gehrels, N., Chiang, J., Rau, A., ...
We use three years of data from the Swift/Burst Alert Telescope (BAT) survey to select a complete sample of X-ray blazars above 15 keV. This sample comprises 26 flat-spectrum radio quasars (FSRQs)...
A glimpse of the end of the dark ages: the gamma-ray burst of 23 April 2009 at redshift 8.3 (2009)
Tanvir, N. R., Fox, D. B., Levan, A. J., Berger, E., Wiersema, K., Fynbo, J. P. U., ...
It is thought that the first generations of massive stars in the Universe were an important, and quite possibly dominant, source of the ultra-violet radiation that reionized the hydrogen gas in the...
The Evolution of Swift/BAT blazars and the origin of the MeV background (2009)
Ajello, M., Costamante, L., Sambruna, R. M., Gehrels, N., Chiang, J., Rau, A., ...
We use 3 years of data from the Swift/BAT survey to select a complete sample of X-ray blazars above 15 keV. This sample comprises 26 Flat-Spectrum Radio Quasars (FSRQs) and 12 BL Lac objects detected...
The redshift and afterglow of the extremely energetic gamma-ray burst GRB 080916C (2009)
Greiner, J., Clemens, C., Krühler, T., Von-Kienlin, A., Rau, A., Sari, R., ...
Context. The detection of GeV photons from gamma-ray bursts (GRBs) has important consequences for the interpretation and modelling of these most-energetic cosmological explosions. The full...
Rise and fall of the X-ray flash 080330: an off-axis jet? (2009)
Guidorzi, C., Clemens, C., Kobayashi, S., Granot, J., Melandri, A., D'Avanzo, P., ...
X-ray flashes (XRFs) are a class of gamma-ray bursts (GRBs) with the peak energy of the time-integrated spectrum, Ep, below 30 keV, whereas classical GRBs have Ep of a few hundreds keV. Apart from Ep...
Correlated optical and X-ray flares in the afterglow of XRF 071031 (2009)
Krühler, T., Greiner, J., McBreen, S., Klose, S., Rossi, A., Afonso, P., ...
We present a densely sampled early light curve of the optical/near-infrared (NIR) afterglow of the X-Ray Flash (XRF) 071031 at z=2.692. Simultaneous and continuous observations in seven photometric...
Nuclear Resonances: The quest for large column densities and a new tool (2009)
Greiner, J., Boggs, S. E., DiCocco, G., Freese, K. T., Gehrels, N., Hartmann, D. H., ...
Nuclear physics offers us a powerful tool: using nuclear resonance absorption lines to infer the physical conditions in astrophysical settings which are otherwise difficult to deduce. Present-day...
Komossa, S., Zhou, H., Rau, A., Dopita, M., Gal-Yam, A., Greiner, J., ...
The galaxy SDSSJ0952+2143 showed remarkable emission-line properties first reported in 2008 (paper I), which are the consequence of a powerful high-energy flare. Here we report follow-up observations...
Astrophysics with Radioactive Atomic Nuclei (2009)
Diehl, R., Von Ballmoos, P., Boggs, S., Burkert, A., Chieffi, A., Gehrels, N., ...
We propose to advance investigations of electromagnetic radiation originating in atomic nuclei beyond its current infancy to a true astronomy. This nuclear emission is independent from conditions of...
The redshift and afterglow of the extremely energetic gamma-ray burst GRB 080916C (2009)
Greiner, J., Clemens, C., Kruehler, T., Kienlin, A. V., Rau, A., Sari, R., ...
The detection of GeV photons from gamma-ray bursts (GRBs) has important consequences for the interpretation and modelling of these most-energetic cosmological explosions. The full exploitation of the...
A candidate tidal disruption event in the Galaxy cluster Abell 3571 (2009)
Cappelluti, N., Ajello, M., Rebusco, P., Komossa, S., Bongiorno, A., Clemens, C., ...
Context. Tidal disruption events are possible sources of temporary nuclear activity in galactic nuclei and can be considered as good indicators of the existence of supermassive black holes in the...
A candidate tidal disruption event in the Galaxy cluster Abell 3571 (2009)
Cappelluti, N., Ajello, M., Rebusco, P., Komossa, S., Bongiorno, A., Clemens, C., ...
Tidal disruption events are possible sources of temporary nuclear activity in galactic nuclei and can be considered as good indicators of the existence of super massive black holes in the centers of...
Gamma-ray burst investigation via polarimetry and spectroscopy (GRIPS) (2009)
Greiner, J., Iyudin, A., Kanbach, G., Zoglauer, A., Diehl, R., Ryde, F., ...
A candidate tidal disruption event in the galaxy cluster Abell 3571 (2009)
Cappelluti, N., Ajello, M., Rebusco, P., Komossa, S., Bongiorno, A., Clemens, C., ...
A strong optical flare before the rising afterglow of GRB 080129 (2009)
Greiner, J., Krühler, T., McBreen, S., Ajello, M., Giannios, D., Schwarz, R., ...
GRB 080913 at redshift 6.7 (2009)
Greiner, J., Krühler, T., Fynbo, J. P. U., Rossi, A., Schwarz, R., Klose, S., ...
Fermi observations of high-energy gamma-ray emission from GRB 080916C (2009)
Abdo, A. A., Ackermann, M., Arimoto, M., Asano, K., Atwood, W. B., Axelsson, M., ...
OGLE2-TR-L9b: an exoplanet transiting a rapidly rotating F3 star (2009)
Snellen, I. A. G., Koppenhoefer, J., Dreizler, S., Greiner, J., ...
The redshift and afterglow of the extremely energetic gamma-ray burst GRB 080916C (2009)
Greiner, J., Clemens, C., Krühler, T., Von Kienlin, A., Rau, A., Sari, R., ...
Ground-based calibration and characterization of the Fermi gamma-ray burst monitor detectors (2009)
Bissaldi, E., Von Kienlin, A., Lichti, G., Steinle, H., Bhat, P. N., Briggs, M. S., ...
The very short supersoft X-ray state of the classical nova M31N 2007-11a (2009)
Henze, M., Pietsch, W., Sala, G., Della Valle, H., Hernanz, M., Greiner, J., ...
Correlated optical and X-ray flares in the afterglow of XRF 071031 (2009)
Krühler, T., Greiner, J., McBreen, S., Klose, S., Rossi, A., Afonso, P., ...
Rise and fall of the X-ray flash 080330: an off-axis jet? (2009)
Guidorzi, C., Clemens, C., Kobayashi, S., Granot, J., Melandri, A., D'Avanzo, P., ...
Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory (ESO). DOI: 10.1051/0004-6361/200911719
Rise and fall of the X-ray flash 080330: an off-axis jet? (2009)
Guidorzi, C., Clemens, C., Kobayashi, S., Granot, J., Melandri, A., D'Avanzo, P., ...
The evolution of Swift/BAT blazars and the origin of the MeV background (2009)
Ajello, M., Costamante, L., Sambruna, R. M., Gehrels, N., Chiang, J., Rau, A., ...
Henze, M., Pietsch, W., Haberl, F., Sala, G., Quimby, R., Hernanz, M., ...
Very fast optical flaring from a possible new galactic magnetar (2009)
Stefanescu, A., Kanbach, G., Slowikowska, A., Greiner, J., McBreen, S., Sala, G.
The afterglow of XRF 071031: evidence for correlated optical and X-ray flares (2009)
Krühler, T., Greiner, J., McBreen, S., Klose, S., Rossi, A., Küpcü Yoldas, A., ...
GRB polarimetry with POET (2009)
McConnell, M. L., Angelini, L., Baring, M. G., Barthelmy, S., Black, J. K., Bloser, P. F., ...
Fermi GBM: main detector-level calibration results (2009)
Bissaldi, E., Von Kienlin, A., Lichti, G., Steinle, H., Bhat, P. N., Briggs, M. S., ...
The Fermi gamma-ray burst monitor instrument (2009)
Bhat, P. N., Meegan, C. A., Lichti, G. G., Briggs, M. S., Connaughton, V., Diehl, R., ...
Komossa, S., Zhou, H., Rau, A., Dopita, M., Gal-Yam, A., Greiner, J., ...
The very short supersoft X-ray state of the classical nova M31N 2007-11a (2008)
Henze, M., Pietsch, W., Sala, G., Della Valle, M., Hernanz, M., Greiner, J., ...
Short supersoft X-ray source (SSS) states (durations < 100 days) of classical novae (CNe) indicate massive white dwarfs which are candidates for the progenitors of supernovae type Ia. We carry out a...
OGLE2-TR-L9: An extrasolar planet transiting a fast-rotating F3 star (2008)
Snellen, I. A. G., Koppenhoefer, J., Dreizler, S., Greiner, J., ...
Context: Photometric observations for the OGLE-II microlens monitoring campaign have been taken in the period 1997-2000. All light curves of this campaign have recently been made public. Our analysis...
A strong optical flare before the rising afterglow of GRB 080129 (2008)
Greiner, J., Krühler, T., McBreen, S., Ajello, M., Giannos, D., Schwarz, R., ...
We report on GROND observations of a 40 sec duration (rest-frame) optical flare from GRB 080129 at redshift 4.349. The rise- and decay time follow a power law with indices +12 and -8, respectively,...
Henze, M., Pietsch, W., Haberl, F., Sala, G., Quimby, R., Hernanz, M., ...
Optical novae have been found to represent the major class of supersoft X-ray sources (SSS) in our neighbour galaxy M 31. We present the two first SSSs ever discovered in the M 31 globular cluster...
GRB 080913 at redshift 6.7 (2008)
Greiner, J., Kruehler, T., Fynbo, J. P. U., Rossi, A., Schwarz, R., Klose, S., ...
We report on the detection by Swift of GRB 080913, and subsequent optical/near-infrared follow-up observations by GROND which led to the discovery of its optical/NIR afterglow and the recognition of...
The 2007 outburst of the X-ray binary XTE J1856+053 (2008)
Sala, G., Greiner, J., Ajello, M., Primak, N.
On 28 February 2007 a new outburst of the previously known transient source XTE J1856+053 was detected with RXTE/ASM. We present here the results of an XMM-Newton (0.5-10.0 keV) Target of Opportunity...
Very fast optical flaring from a possible new Galactic magnetar (2008)
Stefanescu, A., Kanbach, G., Słowikowska, A., Greiner, J., McBreen, S., Sala, G.
Highly luminous rapid flares are characteristic of processes around compact objects like white dwarfs, neutron stars or black holes. In the high energy regime of X- and gamma-rays, outbursts with...
Galaxy Clusters in the Swift/BAT era: Hard X-rays in the ICM (2008)
Ajello, M., Rebusco, P., Cappelluti, N., Reimer, O., Boehringer, H., Greiner, J., ...
We report about the detection of 10 clusters of galaxies in the ongoing Swift/BAT all-sky survey. This sample, which comprises mostly merging clusters, was serendipitously detected in the 15--55 keV...
Cosmic X-ray background and Earth albedo Spectra with Swift/BAT (2008)
Ajello, M., Greiner, J., Sato, G., Willis, D. R., Kanbach, G., Strong, A. W., ...
We use Swift/BAT Earth occultation data at different geomagnetic latitudes to derive a sensitive measurement of the Cosmic X-ray background (CXB) and of the Earth albedo emission in the 15--200 keV...
GRIPS - Gamma-Ray Burst Investigation via Polarimetry and Spectroscopy (2008)
The primary scientific goal of the GRIPS mission is to revolutionize our understanding of the early universe using gamma-ray bursts. We propose a new generation gamma-ray observatory capable of...
A photometric redshift of $z=1.8^{+0.4}_{-0.3}$ for the \agile GRB 080514B (2008)
Rossi, A., Postigo, A. De Ugarte, Ferrero, P., Kann, D. A., Klose, S., Schulze, S., ...
Aims: The AGILE gamma-ray burst GRB 080514B is the first burst with detected emission above 30 MeV and an optical afterglow. However, no spectroscopic redshift for this burst is known. Methods: We...
Three X-ray transients in M31 observed with Swift (2008)
Voss, R., Pietsch, W., Haberl, F., Stiele, H., Greiner, J., Sala, G., ...
The purpose of this study is to find transient X-ray sources in M31, and to investigate and classify their nature. Three X-ray transients were observed with Swift. For each of the three X-ray...
The 2175 A dust feature in a Gamma Ray Burst afterglow at redshift 2.45 (2008)
Krühler, T., Yoldaş, A. Küpcü, Greiner, J., Clemens, C., McBreen, S., Primak, N., ...
We present optical and near-infrared photometry of the afterglow of the long Gamma-Ray Burst GRB 070802 at redshift 2.45 obtained with the ESO/MPI 2.2 m telescope equipped with the multi-channel...
BAT X-Ray Survey. I. Methodology and X-Ray Identification (2008)
Ajello, M., Greiner, J., Kanbach, G., Rau, A., Strong, A. W., Kennea, J. A.
We applied the maximum likelihood (ML) method, as an image reconstruction algorithm, to the BAT X-Ray Survey (BXS). This method was specifically designed to preserve the full statistical information...
Komossa, S., Zhou, H., Wang, T., Ajello, M., Ge, J., Greiner, J., ...
We report the discovery of superstrong, fading, high-ionization iron line emission in the galaxy SDSS J095209.56+214313.3 (SDSS J0952+2143 hereafter), which must have been caused by an X-ray outburst...
The complex light-curve of the afterglow of GRB071010A (2008)
Covino, S., D'Avanzo, P., Klotz, A., Perley, D. A., Amati, L., Campana, S., ...
We present and discuss the results of an extensive observational campaign devoted to GRB071010A, a long-duration gamma-ray burst detected by the Swift satellite. This event was followed for almost a...
Komossa, S., Zhou, H., Wang, T., Ajello, M., Ge, J., Greiner, J., ...
We report the discovery of superstrong, fading, high-ionization iron line emission in the galaxy SDSSJ095209.56+214313.3 (SDSSJ0952+2143 hereafter), which must have been caused by an X-ray outburst...
Immler, S., Modjaz, M., Landsman, W., Bufano, F., Brown, P. J., Milne, P., ...
The peculiar Type Ib supernova (SN) 2006jc has been observed with the UV/Optical Telescope (UVOT) and X-Ray Telescope (XRT) on board the Swift observatory over a period of 19-183 days after the...
Variability in the cycle length of the supersoft source RX J0513.9-6951 (2008)
Burwitz, V., Reinsch, K., Greiner, J., Meyer-Hofmeister, E., Meyer, F., Walter, F. M., ...
The supersoft X-ray binary RX J0513.9-6951 shows cyclic changes between optical-low / X-ray-on states and optical-high / X-ray-off states. It is supposed to be accreting close to the...
COMPTEL Locations and Spectra of Gamma-Ray Bursts (2008)
J. M. Ryan, C. Winkler, L. O. Hanlon, A. Connors, J. Greiner, L. Kuiper, ...
In three years of operation, COMPTEL has measured the locations (mean accuracy 1) and spectra (0.75{30 MeV) of 18 gamma-ray bursts and continues to observe new events every 1{2 months. The existing...
GROND - a 7-channel imager (2008)
Greiner, J., Bornemann, W., Clemens, C., Deuter, M., Hasinger, G., Honsberg, M., ...
We describe the construction of GROND, a 7-channel imager, primarily designed for rapid observations of gamma-ray burst afterglows. It allows simultaneous imaging in the Sloan g'r'i'z' and...
The Swift BAT X-Ray survey. III. X-Ray spectra and statistical properties (2008)
Ajello, M., Rau, A., Greiner, J., Kanbach, G., Salvato, M., Strong, A. W., ...
In this concluding part of the series of three papers dedicated to the Swift BAT hard X-ray survey (BXS), we focus on the X-ray spectral analysis and statistical properties of the source sample....
The remarkable properties of the symbiotic star AE Circinus (2008)
Mennickent, R., Greiner, J., Arenas, J., Tovmassian, G., Mason, E., Tappert, C., ...
The Swift BAT X-ray survey - III. X-ray spectra and statistical properties (2008)
Ajello, M., Rau, A., Greiner, J., Kanbach, G., Salvato, M., Strong, A. W., ...
A deep XMM-Newton survey of M 31 (2008)
Stiele, H., Pietsch, W., Haberl, F., Barnard, R., Burwitz, V., Freyberg, M., ...
Variability in the cycle length of the supersoft source RX J0513.9-6951 (2008)
Burwitz, V., Reinsch, K., Greiner, J., Meyer-Hofmeister, E., Meyer, F., Walter, F. M., ...
Variability in the cycle length of the supersoft source RX J0513.9-6951 (2008)
Burwitz, V., Reinsch, K., Greiner, J., Meyer-Hofmeister, E., Meyer, F., Walter, F. M., ...
BAT X-ray survey - I. Methodology and X-ray identification (2008)
Ajello, M., Greiner, J., Kanbach, G., Rau, A., Strong, A. W., Kennea, J. A.
GROND-a 7-channel imager (2008)
Greiner, J., Bornemann, W., Clemens, C., Deuter, M., Hasinger, G., Honsberg, M., ...
Komossa, S., Zhou, H., Wang, T., Ajello, M., Ge, J., Greiner, J., ...
A rapid response to GRB 070411 (2008)
Ferrero, P., Kann, D. A., Greiner, J., Rykoff, E. S., Mikuz, H., Dintinjana, B., ...
GLAST burst monitor instrument simulation and modeling (2008)
Hoover, A. S., Kippen, R. M., Wallace, M. S., Pendleton, G. N., Fishman, G. J., Meegan, C. A., ...
The complex light curve of the afterglow of GRB 071010A (2008)
Covino, S., D'Avanzo, P., Klotz, A., Perley, D. A., Amati, L., Campana, S., ...
Very fast optical flaring from a possible new galactic magnetar (2008)
Stefanescu, A., Kanbach, G., Slowikowska, A., Greiner, J., McBreen, S., Sala, G.
The 2175 Å dust feature in a gamma-ray burst afterglow at redshift 2.45 (2008)
Krühler, T., Küpcü Yoldas, A., Greiner, J., Clemens, C., McBreen, S., Primak, N., ...
Three X-ray transients in M 31 observed with Swift (Research Note) (2008)
Voss, R., Pietsch, W., Haberl, F., Stiele, H., Greiner, J., Sala, G., ...
A photometric redshift of z = 1.8 (-0.3) (+0.4) for the AGILE GRB 080514B (2008)
Rossi, A., Ferrero, P., Kann, D. A., Klose, S., Schulze, S., ...
Cosmic X-ray background and earth Albedo spectra with Swift BAT (2008)
Ajello, M., Greiner, J., Sato, G., Willis, D. R., Kanbach, G., Strong, A. W., ...
Immler, S., Modjaz, M., Landsman, W., Bufano, F., Brown, P. J., Milne, P., ...
The peculiar Type Ib supernova (SN) 2006jc has been observed with the UV/Optical Telescope (UVOT) and X-Ray Telescope (XRT) on board the Swift observatory over a period of 19 to 183 days after the...
BAT X-ray Survey - I: Methodology and X-ray Identification (2007)
Ajello, M., Greiner, J., Kanbach, G., Rau, A., Strong, A. W., Kennea, J. A.
We applied the Maximum Likelihood method, as an image reconstruction algorithm, to the BAT X-ray Survey (BXS). This method was specifically designed to preserve the full statistical information in...
COMPTEL Observation of GRB 930131 (2007)
Kippen Connors, A. Connors, W. Collmar, J. Greiner, L. Hanlon, G. Lichti, ...
On 1993 January 31 at 18:57:11 UT, COMPTEL detected high energy (0.730 MeV) emission from the intense cosmic gamma-ray burst GRB 930131. Upon rapid notification of this burst by the BATSE experiment...
COMPTEL Measurements of MeV Gamma-Ray Burst Spectra (2007)
Kippen Ryan, J. Ryan, A. Connors, M. Mcconnell, C. Winkler, L. O. Hanlon, ...
ent of rapid variability at MeV energies in the stronger bursts provides evidence that either the sources are nearby (within the Galaxy) or the gamma-ray emission is relativistically beamed....
Strong Gamma-Ray Bursts Observed By Comptel During Its Second Year Of Operation (2007)
Kippen Connors, J. Ryan, J. Greiner, W. Hermsen, O. R. Williams, C. Winkler
The imaging Compton telescope COMPTEL onboard the Compton Gamma Ray Observatory can localize gamma-ray bursts occurring inside its ~1 sr field-of-view in the energy range from 0.75 to 30 MeV with...
Analysis Of Comptel Gamma-Ray Burst Locations And Spectra (2007)
Kippen Ryan, J. Ryan, A. Connors, M. Mcconnell, C. Winkler, L. O. Hanlon, ...
. In its first three years of operation, the COMPTEL instrument on the Compton Gamma-Ray Observatory has measured the locations (mean accuracy ¸1 ffi ) and spectra (0.75--30 MeV) of 18 gamma-ray...
COMPTEL Locations and Spectra of Gamma-Ray Bursts (2007)
Kippen Ryan, J. M. Ryan, C. Winkler, L. O. Hanlon, A. Connors, J. Greiner, ...
In three years of operation, COMPTEL has measured the locations (mean accuracy ¸1 ffi ) and spectra (0.75--30 MeV) of 18 gamma-ray bursts and continues to observe new events every 1--2 months. The...
The Angular Distribution of COMPTEL Gamma-Ray Bursts (2007)
Kippen Ryan, J. Ryan, A. Connors, M. Mcconnell, D. H. Hartmann, C. Winkler, ...
NTRODUCTION The isotropic, inhomogeneous distribution of burst sources derived from BATSE data has led to the general acknowledgment that GRBs could be of cosmological origin. If bursts are...
COMPTEL Observation of GRB 930131 (2007)
A. Connors, W. Collmar, J. Greiner, L. Hanlon, G. Lichti, W. Hermsen, ...
On 1993 January 31 at 18:57:11 UT, COMPTEL detected high energy (0.7-30 MeV) emission from the intense cosmic gamma-ray burst GRB 930131. Upon rapid notification of this burst by the BATSE experiment...
RXTE observations of GRS 1915+105 (2007)
J. Greiner, E. H. Morgan, R. A. Remillard
The galactic superluminal motion source GRS 1915+105 was observed with the RXTE satellite at several occasions during its ongoing active state. The observed X-ray intensity changes drastically on a...
RXTE Observations of QPOs in the Black Hole Candidate GRS1915+105 (2007)
E. H. Morgan, R. A. Remillard, J. Greiner
We report on quasiperiodic oscillations (QPOs) in the black hole candidate GRS 1915+105 seen in 31 PCA observations made by the Rossi X-ray Timing Explorer. We distinguish 3 different types: a QPO...
The remarkable properties of the symbiotic star AE Circinus (2007)
Mennickent, R. E., Greiner, J., Arenas, J., Tovmassian, G., Mason, E., Tappert, C., ...
We present new optical spectroscopy and photometry, 2MASS infrared observations and 24 years of combined AAVSO and AFOEV photometry of the symbiotic star candidate \ae. The long-term light curve is...
BAT X-ray Survey - III: X-ray Spectra and Statistical Properties (2007)
Ajello, M., Rau, A., Greiner, J., Kanbach, G., Salvato, M., Strong, A. W., ...
In this concluding part of the series of three papers dedicated to the Swift/BAT hard X-ray survey (BXS), we focus on the X-ray spectral analysis and statistical properties of the source sample....
Gamma-ray probe of the QSO's obscured evolution (2007)
Iyudin, A., Greiner, J., Di Cocco, G., Larsson, S.
The idea that substantial absorption in AGN could be a definite characteristic of the early phases of QSO evolution was invoked to explain the submillimeter observations of X-ray absorbed AGN at z~1...
Immler, S., Brown, P. J., Milne, P., Dessart, L., Mazzali, P. A., Landsman, W., ...
We present results on the X-ray and optical/UV emission from the type IIP SN 2006bp and the interaction of the SN shock with its environment, obtained with the X-Ray Telescope (XRT) and UV/Optical...
The host galaxy of GRB 011121: morphology and spectral energy distribution (2007)
Yoldas, A. Küpcü, Salvato, M., Greiner, J., Pierini, D., Pian, E., Rau, A
Aims. We present a detailed study of the host galaxy of GRB011121 (at z = 0.36) based on high-resolution imaging in 5 broad-band, optical and near-infrared filters with HST and VLT/ISAAC. Methods....
The highly ionized disk wind of GRO J1655-40 (2007)
Sala, G., Greiner, J., Vink, J., Haberl, F., Kendziorra, E., Zhang, X. L.
The host galaxy of GRB 011121: morphology and spectral energy distribution (2007)
Küpcü Yoldas, A., Salvato, M., Greiner, J., Pierini, D., Pian, E., Rau, A.
X-ray monitoring of optical novae in M 31 from July 2004 to February 2005 (2007)
Pietsch, W., Haberl, F., Sala, G., Stiele, H., Hornoch, K., Riffesser, A., ...
X-ray monitoring of optical novae in M 31 from July 2004 to February 2005 (2007)
Pietsch, W., Haberl, F., Sala, G., Stiele, H., Hornoch, K., Riffesser, A., ...
Current status of the GBM Project (2007)
Lichti, Giselher G., Bhat, N., Briggs, M., Connaughton, V., Diehl, R., Fishman, G., ...
XMM-Newton and INTEGRAL observations of the black hole candidate XTE J1817-330 (2007)
Sala, G., Greiner, J., Ajello, M., Bottacini, E., Haberl, F.
GLAST burst monitor on-board triggering, locations and event classification (2007)
Briggs, M. S., Connaughton, V., Paciesas, W., Preece, R., Meegan, C. A., Fishman, G., ...
Validation of the GLAST burst monitor instrument response simulation software (2007)
Hoover, A. S., Klimenko, A., Kippen, R. M., Wallace, M. S., Pendleton, G. N., Meegan, C. A., ...
Instrument response modeling and simulation for the GLAST burst monitor (2007)
Kippen, R. M., Hoover, A. S., Wallace, M. S., Pendleton, G. N., Meegan, C. A., Fishman, G. J., ...
Full spacecraft source modeling and validation for the GLAST burst monitor (2007)
Wallace, M. S., Kippen, R. M., Hoover, A. S., Pendleton, G. N., Meegan, C. A., Fishman, G. J., ...
Swift/XRT localisation of XTE J1856+053 (2007)
Steeghs, D., Kennea, J., Torres, M. A. P., Miller, J., Homan, J., Greiner, J., ...
Spectroscopic confirmation of an optical nova in M31 (2007)
Pietsch, W., Burwitz, V., Greiner, J., Barsukova, E., Fabrika, S., Moiseev, A., ...
A new optical nova in M31 (2007)
Pietsch, W., Burwitz, V., Hatzidimitriou, D., Steinle, H., Slowikowska, A., Stefanescu, A., ...
Blazar 1ES 1959+650 shows high and hard X-ray state (2007)
Bottacini, E., Beckmann, V., Ishibashi, W., Ajello, M., Greiner, J.
Swift and INTEGRAL observation of 1ES 1959+650 (2007)
Beckmann, V., Ishibashi, W., Bottacini, E., Ajello, M., Greiner, J.
Ferrero, P., Sanchez, S.F., Kann, D.A., Klose, S., Greiner, J., Gorosabel, J., ...
Original article can be found at: http://www.iop.org/EJ/journal/aj Copyright American Astronomical Society [Full text of this article is not available in the UHRA]
X-ray monitoring of optical novae in M31 from July 2004 to February 2005 (2006)
Pietsch, W., Haberl, F., Sala, G., Stiele, H., Hornoch, K., Riffeser, A., ...
Optical novae have recently been identified as the major class of supersoft X-ray sources in M31 based on ROSAT and early XMM-Newton and Chandra observations. This paper reports on a search for X-ray...
Ferrero, P., Sanchez, S. F., Kann, D. A., Klose, S., Greiner, J., Gorosabel, J., ...
We report early follow-up observations of the error box of the short burst 050813 using the telescopes at Calar Alto and at Observatorio Sierra Nevada (OSN), followed by deep VLT/FORS2 I-band...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P. A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae(1) that are more luminous than average(2-5) and that eject material at very high velocities. Less-luminous supernovae were...
Immler, S., Brown, P. J., Milne, P., Petre, R., Gehrels, N., ...
We present a study of the early (days to weeks) X-ray and UV properties of eight Type Ia supernovae (SNe Ia) which have been extensively observed with the X-Ray Telescope (XRT) and UV/Optical...
The highly ionized disk wind of GRO J1655-40 (2006)
Sala, G., Greiner, J., Vink, J., Haberl, F., Kendziorra, E., Zhang, X. L.
Aims: The galactic superluminal microquasar GRO J1655-40 started a new outburst in February 2005, after seven years in quiescence, rising to a high/soft state in March 2005. In this paper we study...
The GRB 060218/SN 2006aj event in the context of other Gamma-Ray Burst Supernovae (2006)
Ferrero, P., Kann, D. A., Zeh, A., Klose, S., Pian, E., Palazzi, E., ...
The supernova SN 2006aj associated with GRB 060218 is the second-closest GRB-SN observed to date (z=0.033). We present Very Large Telescope, Liverpool Telescope, and Katzman Automatic Imaging...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P. A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae that are more luminous than average and that eject material at very high velocities. Less-luminous supernovae were not...
XMM-Newton observations of the microquasars GRO J1655-40 and GRS 1915+105 (2006)
Sala, G., Greiner, J., Haberl, F., Kendziorra, E., Dennerl, K., Freyberg, M., ...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P. A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
The GRB 060218/SN 2006aj event in the context of other gamma-ray burst supernovae (2006)
Ferrero, P., Kann, D. A., Zeh, A., Klose, S., Pian, E., Palazzi, E., ...
The GRB 060218/SN 2006aj event in the context of other gamma-ray burst supernovae (2006)
Ferrero, P., Kann, D. A., Zeh, A., Klose, S., Pian, E., Palazzi, E., ...
Measurements of gamma-ray bursts with GLAST (2006)
Steinle, Helmut, Bhat, N. P., Briggs, M. S., Connaughton, V., Diehl, R., Fishman, G. J., ...
SWIFT/BAT detections of hard X-ray sources: IV (2006)
Ajello, M., Greiner, J., Rau, A., Barthelmy, S., Kennea, J. A., Falcone, A., ...
The GRB 060218/SN 2006aj event in the context of other gamma-ray burst supernovae. (2006)
Ferrero, P., Kann, D.A., Zeh, A., Klose, S., Pian, E., Palazzi, E., ...
An optical supernova associated with the X-ray flash XRF 060218 (2006)
Pian, E., Mazzali, P.A., Masetti, N., Ferrero, P., Klose, S., Palazzi, E., ...
Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae that are more luminous than average and that eject material at very high velocities. Less-luminous supernovae were not...
GRB 060605: observations using an integral field unit (2006)
Ferrero, P., Klose, S., Kann, D. A., Boehm, P., Roth, M. M., Sanchez, S. F., ...
GRB 060218/SN 2006aj, high resolution spectra (2006)
Guenther, E. W., Klose, S., Vreeswijk, P., Pian, E., Greiner, J.
GRB 060105: BAT refined analysis (2006)
Markwardt, C., Angelini, L., Barbier, L., Barthelmy, S., Cummings, J., Fenimore, E., ...
GRB060206: Swift XRT refined analysis (2006)
Morris, D., Burrows, D., Gehrels, N., Greiner, J., Hinshaw, D.
GRB 060108: refined XRT analysis (2006)
Page, K. L., Beardmore, A. P., Goad, M. R., Burrows, D. N., Greiner, J., Hinshaw, D.
Spectroscopic comfirmation of nova candidates in M31 (2006)
Pietsch, W., Burwitz, V., Greiner, J., Rau, A., Sala, G., Bender, R., ...
Swift observations of Swift J0911.2+4533 (2006)
Grupe, D., Tueller, J., Markwardt, C., Kennea, J. A., Falcone, A., Mushotzky, R., ...
The host of GRB/XRF 030528 - an actively star forming galaxy at z=0.782 (2005)
Rau, A., Salvato, M., Greiner, J.
An important parameter for the distinction of X-ray flashes, X-ray rich bursts and Gamma-ray bursts in the rest frame is the distance to the explosion site. Here we report on the spectroscopic...
Masetti, N., Palazzi, E., Pian, E., Hunt, L., Fynbo, J. P. U., Gorosabel, J., ...
We present the results of an optical and near-infrared (NIR) monitoring campaign of the counterpart of Gamma-Ray Burst (GRB) 000911, located at redshift z=1.06, from 5 days to more than 13 months...
Optical novae: the major class of supersoft X-ray sources in M 31 (2005)
Pietsch, W., Fliri, J., Freyberg, M. J., Greiner, J., Haberl, F., Riffeser, A., ...
We searched for X-ray counterparts of optical novae detected in M 31 and M 33. We combined an optical nova catalogue from the WeCAPP survey with optical novae reported in the literature and...
New Gamma-Ray Probe of the Baryonic Dark Matter (2005)
Iyudin, A. F., Burwitz, V., Greiner, J., DiCocco, G., Larsson, S.
We expand on the recently reported detections of the gamma-ray resonant absorption along the line of sight toward gamma-ray bright quasars (QSOs), like 3C279. We propose to use this novel gamma-ray...
Integral field spectroscopy of the ultraluminous X-ray source Holmberg II X-1 (2005)
Lehmann, I., Becker, T., Fabrika, S., Roth, M., Miyaji, T., Afanasiev, V., ...
Erratum: The Swift Gamma-Ray Burst Mission (2005)
Gehrels, N., Chincarini, G., Giommi, P., Mason, K. O., Nousek, J. A., Wells, A. A., ...
Gamma-ray absorptions in the SED of QSO (2005)
Iyudin, A. F., Burwitz, V., Greiner, J., Reimer, A., Reimer, O.
Resonant absorption troughs in the gamma-ray spectra of QSO (2005)
Iyudin, A. F., Reimer, O., Burwitz, V., Greiner, J., Reimer, A.
Gamma-ray probe of the dense QSO environment (2005)
Iyudin, A. F., Burwitz, V., Greiner, J., Reimer, A., Reimer, O.
Optical novae: the major class of supersoft X-ray sources in M 31 (2005)
Pietsch, W., Fliri, J., Freyberg, M. J., Greiner, J., Haberl, F., Riffeser, A., ...
Swift-BAT trigger 155072 ground analysis (2005)
Barbier, L., Angelini, L., Blustin, Alex, Burrows, D., Barthelmy, S., Campana, S., ...
GRB050715: Refined analysis of the Swift-BAT burst (2005)
Barbier, L., Barthelmy, S., Cummings, J., Fenimore, E., Gehrels, N., Greiner, J., ...
Swift-BAT detects two bursts: GRB050215a and GRB050215b (2005)
Barthelmy, S., Barbier, L., Cummings, J., Fenimore, E., Gehrels, N., Greiner, J., ...
GRB050925: Swift/XRT limits (2005)
Beardmore, A. P., Page, K. L., Gehrels, N., Greiner, J., Kennea, J., Nousek, J., ...
GRB 051006: XRT refined analysis (2005)
Capalbi, M., Perri, M., Kennea, J., Burrows, D. N., Morris, D., Angelini, L., ...
Swift/UVOT photometry of GRB050820 (2005)
Chester, M., Page, M., Roming, P., Marshall, F., Boyd, P., Angelini, L., ...
GRB 050712: Swift XRT afterglow position (2005)
Falcone, A., Burrows, D. N., Morris, D. C., Grupe, D., Racusin, J. L., Nousek, J. A., ...
GRB 050603: Swift-BAT refined analysis of a long three-spiked burst (2005)
Fenimore, E., Angelini, L., Barbier, L., Barthelmy, S., Cummings, J., Gehrels, N., ...
GRB 051109: Swift-BAT refined analysis (2005)
Fenimore, E., Angelini, L., Barbier, L., Barthelmy, S., Cummings, J., Gehrels, N., ...
Swift-BAT trigger 155072 is probably not a GRB (2005)
Greiner, J., Beardmore, A., Burrows, D. N., Chester, M., Cummings, J., Gehrels, N., ...
GRB 050715: Swift-BAT detection (2005)
Greiner, J., Barthelmy, S., Krimm, H., Palmer, D., Parsons, A.
GRB 051006: Swift/UVOT upper limits (2005)
Holland, S. T., Norris, J., Greiner, J., Hinshaw, D., Gehrels, N.
GRB 050714, optical observations (2005)
Klose, S., Stecklum, B., Fuhrmann, B., Ludwig, F., Greiner, J.
GRB 050306: Confirmation of X-ray afterglow (2005)
Mangano, V., Cusumano, G., Mineo, T., Perri, M., Giommi, P., Capalbi, M., ...
Swift detection of GRB 050319 (2005)
Krimm, H., Still, M., Barthelmy, S., Barbier, L., Campana, S., Capalbi, M., ...
GRB050318: Swift XRT position (2005)
Nousek, J. A., Morris, D. C., Burrows, D. N., Grupe, D., Chester, M., Meszaros, P., ...
GRB 050730: XRT refined analysis (2005)
Perri, M., Capalbi, M., Giommi, P., Grupe, D., Burrows, D. N., Angelini, L., ...
GRB050712: Swift UVOT observation of afterglow emission (2005)
Poole, T., Grupe, D., Breeveld, A., Angelini, L., Greiner, J.
GRB 050813: Swift-BAT refined analysis (2005)
Sato, G., Angelini, L., Barbier, L., Barthelmy, S., Cummings, J., Fenimore, E., ...
The GLAST burst monitor instrument response simulation system (2005)
Hoover, A. S., Kippen, R. M., Meegan, C. A., Fishman, G. J., Wilson, R. B., Wilson-Hodge, C. A., ...
Unveiling the high energy obscured universe: hunting explosive and collapsed objects physics (2005)
Ubertini, P., Bazzano, A., Cocchi, M., Natalucci, L., Villa, G. E., Bassani, L., ...
Integral field spectroscopy of the ultraluminous X-ray source Holmberg II X-1 (2004)
Lehmann, I., Becker, T., Fabrika, S., Roth, M., Miyaji, T., Afanasiev, V., ...
We present optical integral field observations of the H II region containing the ultraluminous X-ray source Holmberg II X-1. We confirm the existence of an X-ray ionized nebula as the counterpart of...
Discovery of the Near-IR Afterglow and of the Host of GRB 030528 (2004)
Rau, A., Greiner, J., Klose, S., Salvato, M., Cerón, J. M. Castro, Hartmann, D. H., ...
The rapid dissemination of an arcmin-sized HETE-2 localization of the long-duration X-ray flash GRB 030528 led to a ground-based multi-observatory follow-up campaign. We report the discovery of the...
Klose, S., Greiner, J., Rau, A., Henden, A. A., Hartmann, D. H., Zeh, A., ...
We report results from a comprehensive follow-up observing campaign of the afterglow of GRB 030226, including VLT spectroscopy, VLT polarimetry, and Chandra X-ray observations. In addition, we...
Measurements of Gamma-Ray Bursts (GRBs) with Glast (2004)
Lichti, G. G., Briggs, M., Diehl, R., Fishman, G., Greiner, J., Kippen, R. M., ...
One of the scientific goals of the main instrument of GLAST is the study of Gamma-Ray Bursts (GRBs) in the energy range from ~20 MeV to ~300 GeV. In order to extend the energy measurement towards...
Greiner, J, Ringhoffer, M, Li, L, Barth, T, Wölfel, T, Döhner, H, ...
No abstract available.
Cerón, J. M. Castro, Gorosabel, J., Castro-Tirado, A. J., Sokolov, V. V., Afanasiev, V. L., Fatkhullin, T. A., ...
We present optical and NIR (near infrared) follow up observations of the GRB 001109 from 1 to 300 days after the burst. No transient emission was found at these wavelengths within this GRB's (Gamma...
A near-infrared survey of the N49 region around the Soft Gamma-Ray Repeater 0526-66 (2004)
Klose, S., Henden, A. A., Geppert, U., Greiner, J., Guetter, H. H., Hartmann, D. H., ...
We report the results of a deep near-infrared survey with VLT/ISAAC of the environment of the supernova remnant N49 in the Large Magellanic Cloud, which contains the soft gamma-ray repeater SGR...
Greiner, J., DiStefano, R., Kong, A., Primini, F.
We have performed Chandra observations during the past 3 years of 5 of the M31 supersoft X-ray sources (SSS) discovered with ROSAT. Surprisingly, only one of these sources has been detected, despite...
Klose, S., Palazzi, E., Masetti, N., Stecklum, B., Greiner, J., Hartmann, D. H., ...
We explore the prospects for simultaneous, broad-band, multiwavelength polarimetric observations of GRB afterglows. We focus on the role of cosmic dust in GRB host galaxies on the observed percentage...
Resonant Scattering and Recombination in CAL 87 (2004)
Greiner, J., Iyudin, A., Jimenez-Garate, M., Burwitz, V., Schwarz, R., DiStefano, R., ...
The eclipsing supersoft X-ray binary CAL 87 has been observed with Chandra on August 13/14, 2001 for nearly 100 ksec, covering two full orbital cycles and three eclipses. The shape of the eclipse...
Fynbo, J. P. U., Sollerman, J., Hjorth, J., Grundahl, F., Gorosabel, J., Weidinger, M., ...
We present optical and near-infrared follow-up observations of the X-Ray Flash (XRF) of July 23 2003. Our observations in the R-band cover the temporal range from 4.2 h to 64 days after the high...
The Optical Afterglow of GRB 030226 (2004)
Klose, S., Greiner, J., Zeh, A., Rau, A., Henden, A.A., Hartmann, D.H., ...
Klose, S., Greiner, J., Rau, A., Henden, A.A., Hartmann, D.H., Zeh, A., ...
Discovery of the near-IR afterglow and of the host of GRB 030528 (2004)
Rau, A., Greiner, J., Klose, S., Salvato, M., Castro Ceron, J.M., Hartmann, D.H., ...
The Polarization Evolution of the Optical Afterglow of GRB 030329 (2004)
Greiner, J., Klose, S., Reinsch, K., Schmid, H.M., Sari, R., Hartmann, D.H., ...
Not Available
GRB 020813: Polarization in the case of a smooth optical decay (2004)
Gorosabel, J., Rol, E., Covino, S., Castro-Tirado, A. J., Castro Cerón, J. M., Lazzati, D., ...
Measurements of gamma-ray bursts with GLAST (2004)
Lichti, G. G., Briggs, M., Diehl, R., Fishman, G., Greiner, J., Kippen, R. M., ...
The dark side of GRB 020819 (2004)
Klose, S., Stecklum, B., Henden, A. A., Greiner, J., Hartmann, D. H., Cardiel, N., ...
The afterglow light curve and the supernova of GRB 011121 (2004)
Zeh, A., Klose, S., Greiner, J., Hartmann, D. H., Lindsay, K., Castro-Tirado, A. J., ...
GRB 011121: Jet, wind and supernova – all in one (2004)
Greiner, J., Klose, S., Salvato, M., Zeh, A., Schwarz, R., Hartmann, D. H., ...
The optical/near-IR spectral energy distribution of the GRB 000210 host galaxy (2004)
Gorosabel, J., Christensen, L., Hjorth, J., Fynbo, J. U., Pedersen, H., Jensen, B. L., ...
Resonant scattering and recombination in CAL 87 (2004)
Greiner, J., Iyudin, A., Jimenez-Garate, M., Burwitz, V., Schwarz, R., DiStefano, R., ...
Castro Cerón, J. M., Gorosabel, J., Castro-Tirado, A. J., Sokolov, V. V., Afanasiev, V. L., Fatkhullin, T. A., ...
Supersoft X-ray sources in M31. I. A Chandra survey and an extension to quasi-soft sources (2004)
Di Stefano, R., Kong, A. K. H., Greiner, J., Primini, F. A., Garcia, M. R., Barmby, P., ...
The Swift gamma-ray burst mission (2004)
Gehrels, N., Chincarini, G., Giommi, P., Mason, K. O., Nousek, J. A., Wells, A. A., ...
A near-infrared survey of the N49 region around the soft gamma repeater SGR 0526-66 (2004)
Klose, S., Henden, A. A., Geppert, U., Greiner, J., Guetter, H. H., Hartmann, D. H., ...
The polarization evolution of the optical afterglow of GRB 030329 (2004)
Greiner, J., Klose, S., Reinsch, K., Schmid, H. M., Sari, R., Hartmann, D. H., ...
Searching for GRB remnants in nearby galaxies (2004)
Bhargavi, S. G., Rhoads, J., Perna, R., Feldmeier, J., Greiner, J.
Discovery of the faint near-IR afterglow of GRB 030528 (2004)
Rau, A., Greiner, J., Klose, S., Cerón, J. Castro, Fruchter, A., Yoldas, A. Küpcü, ...
The optical afterglow of GRB 030226 (2004)
Klose, S., Greiner, J., Zeh, A., Rau, A., Henden, A. A., Hartmann, D. H., ...
The GLAST burst monitor (2004)
Bhat, P. N., Meegan, C. A., Lichti, G. G., Briggs, M. S., Connaghton, V., Diehl, R., ...
Discovery of the near-IR afterglow and of the host of GRB 030528 (2004)
Rau, A., Greiner, J., Klose, S., Salvato, M., Castro Cerón, J. M., Hartmann, D. H., ...
Resonant scattering and recombination in cal 87 (2004)
Burwitz , V., DiStefano , R., Greiner , J., Iyudin , A., Jimenez Garate, M., Schulz , N., ...
Se observó la binaria eclipsante de rayos X supersuave CAL 87 con Chandra el 13/14 de agosto de 2001, durante casi 100 ksec, completando dos ciclos orbitales totales y tres eclipses. La forma de la...
SGR 1806-20: potential NIR counterpart (2004)
Kouveliotou, C., Klose, S., Wachter, S., Woods, P., Patel, S., Greiner, J., ...
GRB 020813: Polarization in the case of a smooth optical decay (2004)
Gorosabel, J., Rol, E., Covino, S., Castro-Tirado, A.J., Castro Ceron, J.M., Lazzati, D., ...
The rotational broadening and the mass of the donor star of GRS 1915+105 (2003)
The binary parameters of the microquasar GRS 1915+105 have been determined by the detection of Doppler-shifted 12CO and 13CO lines in its K-band spectrum (Greiner et al., 2001, Nature, 414, 522)....
Searching for GRB remnants in nearby galaxies (2003)
Bhargavi, S. G., Rhoads, J., Perna, R., Feldmeier, J., Greiner, J.
Gamma Ray Bursts (GRBs) are expected to leave behind GRB remnants, similar to how ``standard'' supernovae (SN) leave behind SN remnants. The identification of these remnants in our own and in nearby...
The polarization evolution of the optical afterglow of GRB 030329 (2003)
Greiner, J., Klose, S., Reinsch, K., Schmid, H. M., Sari, R., Hartmann, D. H., ...
We report 31 polarimetric observations of the afterglow of GRB 030329 with high signal-to-noise and high sampling frequency. The data imply that the afterglow magnetic field has small coherence...
Discovery of the Faint Near-IR Afterglow of GRB 030528 (2003)
Rau, A., Greiner, J., Klose, S., Cerón, J. M. Castro, Fruchter, A., Yoldas, A. Kupcu, ...
We report on the discovery of the near-IR transient of the long-duration gamma-ray burst GRB 030528 and its underlying host galaxy. The near-IR transient was first observed in JHKs with SofI at the...
Multiwavelength scaling relations for nuclei of Seyfert galaxies (2003)
Salvato, M., Greiner, J., Kuhlbrodt, B.
We analyze an X-ray flux-limited, complete sample of 93 AGN at z< 0.1, selected from the ROSAT Bright Survey. Two thirds of the sample are Seyfert 1 galaxies (Sy1) and one third are Narrow-Line...
Evolution of the polarization of the optical afterglow of the gamma-ray burst GRB 030329 (2003)
Greiner, J., Klose, S., Reinsch, K., Schmid, H. M., Sari, R., Hartmann, D. H., ...
We report 31 polarimetric observations of the afterglow of GRB 030329 with high signal-to-noise and high sampling frequency. We establish the polarization light curve, detect sustained polarization...
GRB 030227: the first multiwavelength afterglow of an INTEGRAL GRB (2003)
Castro-Tirado, A. J., Gorosabel, J., Guziy, S., Reverte, D., Cerón, J. M. Castro, Postigo, A. De Ugarte, ...
We present multiwavelength observations of a gamma-ray burst detected by INTEGRAL (GRB 030227) between 5.3 hours and ~1.7 days after the event. Here we report the discovery of a dim optical afterglow...
GRB 020813: polarization in the case of a smooth optical decay (2003)
Gorosabel, J., Rol, E., Covino, S., Castro-Tirado, A. J., Cerón, J. M. Castro, Lazzati, D., ...
We present the results of a VLT polarimetric monitoring campaign of the GRB 020813 optical afterglow carried out in three nights, from 0.88 to 4.20 days after the gamma-ray event. The mean values of...
GRB 011121: A collimated outflow into wind-blown surroundings (2003)
Greiner, J., Klose, S., Salvato, M., Zeh, A., Schwarz, R., Hartmann, D. H., ...
We discover a break in the GRB 011121 afterglow light curve after 1.3 days, which implies an initial jet opening angle of about 9 deg. The SED during the first four days is achromatic, and supports...
The blue host galaxy of the red GRB 000418 (2003)
Gorosabel, J., Klose, S., Christensen, L., Fynbo, J. P. U., Hjorth, J., Greiner, J., ...
We report on multi-band (UBVRIZJsKs) observations of the host galaxy of the April 18, 2000 gamma-ray burst. The Spectral Energy Distribution (SED) is analysed by fitting empirical and synthetic...
Supersoft X-ray Sources in M31: I. A Chandra Survey and an Extension to Quasisoft Sources (2003)
Di Stefano, R., Kong, A. K. H., Greiner, J., Primini, F. A., Garcia, M. R., Barmby, P., ...
We report on very soft X-ray sources (VSSs) in M31. In a survey which was most sensitive to soft sources in four 8'x8' regions covered by Chandra's ACIS-S S3 CCD, we find 33 VSSs that appear to...
The 590 days long term periodicity of the microquasar GRS 1915+105 (2003)
Rau, A., Greiner, J., McCollough, M. L.
We report on the discovery of a 590 days long term periodicity in the hard X-ray component of the microquasar \grs found from a comprehensive study of more than four years of {\it RXTE} observations....
XMM-Newton observations of Nova LMC 2000 (2003)
Greiner, J., Orio, M., Schartel, N.
We report on three X-ray observations of Nova LMC 2000 with XMM at 17, 51 and 294 days after the maximum, respectively. X-ray spectral fits show a concordant decrease of the absorbing column and the...
Tovmassian, G., Zharikov, S., Michel, R., Greiner, J., Skillman, D., ...
FS Aur is a known dwarf nova with an orbital period of about 85.7 minutes. It has been assumed to be a member of the SU UMa subclass of cataclysmic variables (CVs), but previous searches for...
The Characteristics of Magnetic CVs in the Period Gap (2003)
Tovmassian, G., Zharikov, S., Mennickent, R., Greiner, J.
We have observed several magnetic cataclysmic variables located in the range between 2 and 3 hours, known as the period gap. This work was prompted by the recent discovery of RX J1554.2+2721. It has...
The optical/near-IR spectral energy distribution of the GRB 000210 host galaxy (2003)
Gorosabel, J., Christensen, L., Hjorth, J., Fynbo, J. U., Pedersen, H., Jensen, B. L., ...
We report on UBVRIZJsHKs-band photometry of the dark GRB 000210 host galaxy. Fitting a grid of spectral templates to its Spectral Energy Distribution (SED), we derived a photometric redshift...
Are the hosts of Gamma-Ray Bursts sub-luminous and blue galaxies? (2003)
Floc'h, E. Le, Mirabel, I. F., Sanders, D. B., Bosch, G., Diaz, R. J., ...
We present K-band imaging observations of ten Gamma-Ray Burst (GRB) host galaxies. We compare their observed and absolute K magnitudes as well as their R-K colours with those of other distant sources...
GRB 030227 : The first multiwavelength afterglow of an INTEGRAL GRB (2003)
Castro-Tirado, A. J., Gorosabel, J., Guziy, S., Reverte, D., Castro Cerón, J. M., ...
We present multiwavelength observations of a gamma-ray burst detected byINTEGRAL (GRB 030227) between 5.3 hours and ~ 1.7days after the event. Here we report the discovery of a dim opticalafterglow...
GRB 011121: A Collimated Outflow into Wind-blown Surroundings (2003)
Greiner, J., Klose, S., Salvato, M., Zeh, A., Schwarz, R., Hartmann, D.H., ...
Evolution of the polarization of the optical afterglow of the gamma-ray burst GRB030329 (2003)
Greiner, J., Klose, S., Reinsch, K., Martin Schmid, H., Sari, R., Hartmann, D.H., ...
The association of a supernova with GRB030329 strongly supports the `collapsar' model of gamma-ray bursts, where a relativistic jet forms after the progenitor star collapses. Such jets cannot be...
The Search for the Afterglow of the Dark GRB 001109 (2003)
Castro Ceron, J.M., Gorosabel, J., Castro-Tirado, A.J., Sokolov, V., Afanasiev, V.L., Fatkhullin, T.A., ...
A multi-colour study of the dark GRB 000210 host galaxy and its environment (2003)
Gorosabel, J., Christensen, L., Hjorth, J., Fynbo, J.U., Pedersen, H., Jensen, B.L., ...
We present UBVRIZJsHKs broad band photometry of the host galaxy of the dark gamma-ray burst (GRB) of February 10, 2000. These observations represent the most exhaustive photometry given to date of...
Gorosabel, J., Fynbo, J.U., Moller, P., Hjorth, J., Pedersen, H., Christensen, L., ...
We present the results provided by an automatic colour-colour discrimination pipe-line developed to discern the different populations of objects present in GRB error boxes. We illustrate the...
A very energetic supernova associated with the gamma-ray burst of 29 March 2003 (2003)
Hjorth, J., Sollerman, J., Moller, P., Fynbo, J.U., Woosley, S., Kouveliotou, C., ...
Over the past five years evidence has mounted that long-duration (>2s) gamma-ray bursts (GRBs)-the most luminous of all astronomical explosions-signal the collapse of massive stars in our Universe....
The blue host galaxy of the red GRB 000418 (2003)
Gorosabel, J., Klose, S., Christensen, L., Fynbo, J.U., Hjorth, J., Greiner, J., ...
We report on multi-band (UBVRIZJsKs) observations of the host galaxy of the April 18, 2000 gamma-ray burst. The Spectral Energy Distribution (SED) is analysed by fitting empirical and synthetic...
GRB 030227: The first multiwavelength afterglow of an INTEGRAL GRB (2003)
Castro-Tirado, A.J., Gorosabel, J., Guziy, S., Reverte, D., Castro Ceron, J.M., Ugarte Postigo, A. De, ...
We present multiwavelength observations of a gamma-ray burst detected by INTEGRAL (GRB 030227) between 5.3 hours and ~ 1.7 days after the event. Here we report the discovery of a dim optical...
GRB 011121: A Collimated Outflow into Wind-blown Surroundings (2003)
Greiner, J., Klose, S., Salvato, M., Zeh, A., Schwartz, R., Hartmann, D.H., ...
We report optical and near-infrared follow-up observations of GRB 011121 collected predominantly at ESO telescopes in Chile. We discover a break in the afterglow light curve after 1.3 days, which...
We present a comprehensive X-ray study of four years of pointed RXTE observations of GRS 1915+105 in the X-state. We interpret the behavior of the hard power law tail spectrum as coming from inverse...
A multi-colour study of the dark GRB 000210 host galaxy and its environment (2003)
Gorosabel, J., Christensen, L., Hjorth, J., Fynbo, J. U., Pedersen, H., Jensen, B. L., ...
The blue host galaxy of the red GRB 000418 (2003)
Gorosabel, J., Klose, S., Christensen, L., Fynbo, J. P. U., Hjorth, J., Greiner, J., ...
GRB 030227 : The first multiwavelength afterglow of an INTEGRAL GRB (2003)
Castro-Tirado, A. J., Gorosabel, J., Guziy, S., Reverte, D., Castro Cerón, J. M., ...
Are the hosts of gamma-ray bursts sub-luminous and blue galaxies? (2003)
Le Floc'h, E., Mirabel, I. F., Sanders, D. B., Bosch, G., Diaz, R. J., ...
GRB 011121 : a collimated outflow into wind-blown surroundings (2003)
Greiner, J., Klose, S., Salvato, M., Zeh, A., Schwarz, R., Hartmann, D. H., ...
The search for the afterglow of the dark GRB 001109 (2003)
Castro Cerón, J. M., Gorosabel, J., Castro-Tirado, A. J., Sokolov, V. V., Afanasiev, V. L., Fatkhullin, T. A., ...
A very energetic supernova associated with the -ray burst of 29 March 2003. (2003)
Hjorth, J., Sollerman, J., Moller, P., Fynbo, J.P.U., Woosley, S.E., Kouveliotou, C., ...
A multi-colour study of the dark GRB 000210 host galaxy and its environment (2002)
Gorosabel, J., Christensen, L., Hjorth, J., Fynbo, J. U., Pedersen, H., Jensen, B. L., ...
We present UBVRIZJsHKs broad band photometry of the host galaxy of the dark gamma-ray burst (GRB) of February 10, 2000. These observations represent the most exhaustive photometry given to date of...
Chandra Studies of the X-ray Point Source Luminosity Functions of M31 (2002)
Kong, A. K. H., Di Stefano, R., Garcia, M. R., Greiner, J.
Three different M31 disk fields, spanning a range of stellar populations, were observed by Chandra. We report the X-ray point source luminosity function (LF) of each region, and the LF of M31's...
The census of cataclysmic variables in the ROSAT Bright Survey (2002)
Schwope, A. D., Brunner, H., Buckley, D., Greiner, J., Heyden, K. V. D., Neizvestny, S., ...
We give an identification summary and results of polarimetric, photometric and spectroscopic follow-up observations of new, X-ray bright cataclysmic variables. These were identified as optical...
Chandra observations of the recurrent nova CI Aql after its April 2000 outburst (2002)
We report the results of two Chandra observations of the recurrent nova CI Aql at 14 and 16 months after its outburst in April 2000, respectively. The X-ray emission is faint in both cases, without...
A new two-pole accretion polar: RX J1846.9+5538 (2002)
Schwarz, R., Greiner, J., Tovmassian, G. H., Zharikov, S. V., Wenzel, W.
We report the discovery of a new, bright (V = 17 mag) AM Her system as the optical counterpart of the soft ROSAT All-Sky-Survey source RX J1846.9+5538 (= 1RXS J184659.4+553834). Optical photometric...
First optical identification of a suprsoft X-ray source in M31 (2002)
Nedialkov, P., Orio, M., Birkle, K., Conselice, C., Della Valle, M., Greiner, J., ...
We propose the first association of an optical counterpart with a luminous supersoft X-ray source in M31, RX J0044.0+4118, observed with ROSAT in July 1991. The PSPC position is at 1.6" angular...
X-Ray Off States and Optical Variability in CAL 83 (2002)
CAL 83 was one of the first supersoft X-ray binaries to be discovered and is considered to be the prototype of its class. In 15 X-ray observations between 1983-1997 it was observed to have nearly...
GRB 020405: VLT observations of the OT environment (2002)
Masetti, N., Palazzi, E., Maiorano, E., Simoncelli, A., Pian, E., Castro-Tirado, A.J., ...
GRB 020405 field photometry at ESO (2002)
Simoncelli, A., Maiorano, E., Palazzi, E., Masetti, N., Pian, E., Hjorth, J., ...
GRB 020321: optical observations (2002)
Salamanca, M.I. De, Rol, E., Kaper, L., Castro-Tirado, A.J., Fruchter, A., Greiner, J., ...
Gamma-ray bursts: the most powerful cosmic explosions (2002)
Kaper, L., Castro-Tirado, A.J., Fruchter, A., Greiner, J., Hjorth, J., Pian, E., ...
Contents: The GRACE consortium. GRBs and their afterglows. Evidence for collimation. The origin of GRBs: possible progenitors. The supernova connection. GRB host galaxies.
GRB 021004: polarimetric observations (2002)
Rol, E., Castro Ceron, J.M., Gorosabel, J., Castro-Tirado, A.J., Fruchter, A., Greiner, J., ...
GRB 020418, optical/near-IR observations (2002)
Gorosabel, J., Hjorth, J., Jakobsson, P., Rasmussen, J., Jensen, B.L., Pedersen, H., ...
GRB 021004: optical spectroscopy on Oct 11 (2002)
Castro-Tirado, A.J., Perez, E., Gorosabel, J., Castro Ceron, J.M., Andersen, M., Hjorth, J., ...
Gorosabel, J., Fynbo, J.U., Hjorth, J., Wolf, C., Andersen, M.I., Pedersen, H., ...
We report the discovery of the optical and near-infrared counterparts to GRB 001011. The GRB 001011 error box determined by Beppo-SAX was simultaneously imaged in the near-infrared by the 3.58-m New...
The bright optical afterglow of the long GRB 001007 (2002)
Castro Ceron, J.M., Castro-Tirado, A.J., Gorosabel, J., Hjorth, J., Fynbo, J.U., Jensen, B.L., ...
We present optical follow up observations of the long GRB 001007 between 6.14 hours and ~468 days after the event. An unusually bright optical afterglow (OA) was seen to decline following a steep...
The census of cataclysmic variables in the ROSAT Bright Survey (2002)
Schwope, A. D., Brunner, H., Buckley, D., Greiner, J., Neizvestny, S., ...
We give an identification summary and results of polarimetric, photometric and spectroscopic follow-up observations of new, X- ray bright cataclysmic variables. These were identified as optical...
A new two-pole accretion polar: RX J1846.9+5538 (2002)
Schwarz, R., Greiner, J., Tovmassian, G.H, Zharikov, S.V, Wenzel, W.
We report the discovery of a new, bright (V similar to 17(m)) AM Her system as the optical counterpart of the soft ROSAT All- Sky-Survey source RX J1846.9+5538 (=1RXS J184659.4+553834). Optical...
X-ray off states and optical variability in CAL 83 (2002)
CAL 83 was one of the first supersoft X-ray binaries (SSBs) to be discovered and is considered to be the prototype of its class. In 15 X-ray observations between 1983-1997 it was observed to have...
Chandra observations of the recurrent nova CI Aquilae after its 2000 April outburst (2002)
We report the results of two Chandra observations of the recurrent nova CI Aql at 14 and 16 months after its outburst in 2000 April. The X-ray emission is faint in both cases, without any noticeable...
On the secondary star of the cataclysmic variable 1RXS J094432.1+035738 (2001)
Mennickent, R. E., Tovmassian, G., Zharikov, S. V., Tappert, C., Greiner, J., Gansicke, B. T., ...
We present V and Rc band photometry and optical near-infrared spectroscopy of the cataclysmic variable 1RXS J094432.1+035738. We detected features of a cool secondary star, which can be modeled with...
A New Way to Detect Massive Black Holes in Galaxies: The Stellar Remnants of Tidal Disruption (2001)
Di Stefano, R., Greiner, J., Murray, S., Garcia, M.
We point out that the tidal disruption of a giant may leave a luminous (10^35-10^39 ergs/s), hot (10-100 eV) stellar core. The ``supersoft'' source detected by Chandra at the center of M31 may be...
An unusually massive stellar black hole in the Galaxy (2001)
Greiner, J., Cuby, J. G., McCaughrean, M. J.
Here we report a measurement of the orbital period and mass function of GRS 1915+105 which allow us to deduce a mass of 14 +- 4 solar masses for its black hole. This large mass provides a challenge...
I summarize recent near-infrared spectroscopy of the microquasar GRS 1915+105 with the ESO/VLT which allowed to (i) identify the donor and (ii) measure the orbital period and radial velocity...
The new cataclysmic variable RX J1554.2+2721 in the period gap (2001)
Tovmassian, G. H., Greiner, J., Zharikov, S. V., Echevarria, J., Kniazev, A.
We report on the results of a spectroscopic and photometric study of a new cataclysmic variable, identified as optical counterpart of the X-ray source RX J1554.2+2721 detected by ROSAT. The...
The New AM Her System RX J0704.2+6203. Northern Twin of BL Hyi (2001)
Tovmassian, G. H., Szkody, P., Greiner, J., Zharikov, S. V., Serrano, A., ...
We report here on the identification and study of the optical counterpart of the ROSAT source RX J0704.2+6203. Extensive spectral and photometric observation showed that the object belongs to the...
The bright optical afterglow of the long GRB 001007 (2001)
Cerón, J. M. Castro, Castro-Tirado, A. J., Gorosabel, J., Hjorth, J., Fynbo, J. U., Jensen, B. L., ...
We present optical follow up observations of the long GRB 001007 between 6.14 hours and ~468 days after the event. An unusually bright optical afterglow (OA) was seen to decline following a steep...
Gorosabel, J., Fynbo, J. U., Hjorth, J., Wolf, C., Andersen, M. I., Pedersen, H., ...
We report the discovery of the optical and near-infrared counterparts to GRB 001011. The GRB 001011 error box determined by Beppo-SAX was simultaneously imaged in the near-infrared by the 3.58-m New...
BZ Cam during its 1999/2000 optical low state (2001)
Greiner, J., Tovmassian, G., Orio, M., Lehmann, H., Chavushyan, V., Rau, A., ...
We report optical observations of the VY Scl star BZ Cam during its previous optical low state in 1999/2000. We find drastic variations in the line profiles. Narrow-band imaging observations show...
Bright X-Ray Sources in M31 Globular Clusters (2001)
Di Stefano, R., Kong, A. K. H., Garcia, M. R., Barmby, P., Greiner, J., Murray, S. S., ...
We have conducted Chandra observations of ~2560 square arcmin (~131 kpc^2) of of M31, and find that the most luminous X-ray sources in our fields are in globular clusters (GCs). Of the 28 GC X-ray...
Identification of the donor in the X-ray binary GRS 1915+105 (2001)
Greiner, J., Cuby, J. G., McCaughrean, M. J., Castro-Tirado, A. J., Mennickent, R. E.
We report on the results of medium-resolution spectroscopy of GRS 1915+105 in the near-infrared H and K band using the 8m VLT at ESO. We clearly identify absorption bandheads from 12CO and 13CO....
The X-ray spectrum of LSI+61o303 (2001)
It had been proposed earlier that the hard X-ray and gamma-ray radiation of the Be/X-ray system LSI+61o303 could be due to inverse Compton scattering of optical photons from the Be star by the same...
The X-ray emission from Nova V382 Velorum: I. The hard component observed with BeppoSAX (2001)
Orio, M., Parmar, A., Benjamin, R., Amati, L., Frontera, F., Greiner, J., ...
We present BeppoSAX observations of Nova Velorum 1999 (V382 Vel), done in a broad X-ray band covering 0.1-300 keV only 15 days after the discovery and again after 6 months. The nova was detected at...
The optical afterglow and host galaxy of GRB000926 (2001)
Fynbo, J. U., Gorosabel, J., Dall, T. H., Hjorth, J., Pedersen, H., Andersen, M. I., ...
We present the discovery of the Optical Transient (OT) of the long-duration gamma-ray burst GRB000926. The optical transient was detected independently with the Nordic Optical Telescope and at Calar...
The extraordinarily bright optical afterglow of GRB 991208 and its host galaxy (2001)
Castro-Tirado, A. J., Sokolov, V. V., Gorosabel, J., Cerón, J. M. Castro, Greiner, J., ...
Observations of the extraordinarily bright optical afterglow (OA) of GRB 991208 started 2.1 d after the event. The flux decay constant of the OA in the R-band is -2.30 +/- 0.07 up to 5 d, which is...
Detection of the optical afterglow of GRB 000630: Implications for dark bursts (2001)
Fynbo, J. U., Jensen, B. L., Gorosabel, J., Hjorth, J., Pedersen, H., Moller, P., ...
We present the discovery of the optical transient of the long-duration gamma-ray burst GRB000630. The optical transient was detected with the Nordic Optical Telescope 21.1 hours after the burst. At...
Magnetically driven superluminal motion from rotating black holes (2001)
We have investigated magnetically driven superluminal jets originating from rotating black holes. The stationary, general relativistic, magnetohydrodynamic wind equation along collimating magnetic...
The extraordinarily bright optical afterglow of GRB 991208 and its host galaxy (2001)
Castro-Tirado, A.J., Sokolov, V., Gorosabel, J., Castro Ceron, J.M., Greiner, J., ...
Broad-band optical observations of the extraordinarily bright optical afterglow of the intense gamma-ray burst GRB 991208 started ~2.1 days after the event and continued until 4 Apr. 2000. The flux...
The afterglow of the short/intermediate-duration gamma-ray burst GRB 000301C: A jet at z=2.04 (2001)
Jensen, B.L., Fynbo, J.U., Gorosabel, J., Hjorth, J., Holland, S., Moller, P., ...
The optical afterglow and host galaxy of GRB 000926 (2001)
Fynbo, J.U., Gorosabel, J., Dall, T.H., Hjorth, J., Pedersen, H., Andersen, M.I., ...
The extraordinarily bright optical afterglow of GRB 991208 and its host galaxy (2001)
Castro-Tirado, A. J., Sokolov, V. V., Gorosabel, J., Ceron, J. M. Castro, Greiner, J., ...
Broad-band optical observations of the extraordinarily bright optical afterglow of the intense gamma-ray burst GRB 991208 started ~2.1 days after the event and continued until 4 Apr. 2000. The flux...
K band monitoring of GRS 1915+105 during 1999/2000 (2000)
Greiner, J., Vrba, F. J., Henden, A. A., Guetter, H. H., Luginbuhl, C. B.
We report on long-term K band photometry of the galactic microquasar GRS 1915+105 since March 1999. We see variations of more than 1 mag, which are seemingly correlated with variations in X-ray...
Identification of the donor in GRS 1915+105 (2000)
Greiner, J., McCaughrean, M. J., Cuby, J. G., Castro-Tirado, A. J., Mennickent, R. E.
We report on the results of medium-resolution spectroscopy of GRS 1915+105 in the H and K band using the 8m VLT at ESO. We clearly identify absorption bandheads from CO12 and CO13. Together with...
Broadband X-ray Spectroscopy of GRS 1915+105 (2000)
We analyzed RXTE data of GRS 1915+105 of X-ray low states between 1996 and 1998. The X-ray spectrum is dominated by the power law component. We found (i) that the power law is pivoting at 10-30 keV,...
RX J1420.4+5334 - another tidal disruption event? (2000)
Greiner, J., Schwarz, R., Zharikov, S., Orio, M.
We have discovered a transient X-ray source, RX J1420.4+5334, which displays a ROSAT flux variation of >150 between the ROSAT All-Sky-Survey in 1990 and a preceding pointed ROSAT observations in July...
S 10947 Aql = RX J2009.8+1557: A probable RS CVn star which sometimes stops its eclipses (2000)
We report the discovery of a new variable star, called S 10947 Aql, as the likely optical counterpart of RX J2009.8+1557. The optical variability pattern as well as the detected X-ray emission...
Klose, S., Stecklum, B., Masetti, N., Pian, E., Palazzi, E., Henden, A. A., ...
We report near-infrared and optical follow-up observations of the afterglow of the Gamma-Ray Burst 000418 starting 2.5 days after the occurrence of the burst and extending over nearly seven weeks....
The afterglow of the short/intermediate-duration gamma-ray burst GRB 000301C: A jet at z=2.04 (2000)
Jensen, B. L., Fynbo, J. U., Gorosabel, J., Hjorth, J., Holland, S., Moller, P., ...
We present Ulysses and NEAR data from the detection of the short or intermediate duration (2 s) gamma-ray burst GRB000301C (2000 March 1.41 UT). The gamma-ray burst (GRB) was localised by the Inter...
Catalog of supersoft X-ray sources (2000)
This catalog comprises an up-to-date (December 1999) list of luminous (>10^36 erg/s), binary supersoft X-ray sources. This electronic version (including the accompannying Web-pages) supersedes the...
The likely Optical/Infrared Afterglow of GRB 001011 (2000)
Gorosabel, J., Hjorth, J., Pedersen, H., Jensen, B.L., Fynbo, J., Andersen, M.I., ...
Report on behalf of a joint afterglow network
GRB000607, optical observations (2000)
Masetti, N., Palazzi, E., Pian, E., Castro-Tirado, A.J., Hudec, R., Soldan, J., ...
GRB000528, optical observations at ESO (2000)
Palazzi, E., Masetti, N., Pian, E., Frontera, F., Castro-Tirado, A.J., Hjorth, J., ...
Optical Follow-up of GRB000529 Error Box (2000)
Palazzi, E., Masetti, N., Pian, E., Frontera, F., Castro-Tirado, A.J., Hjorth, J., ...
GRB000801, VLT-Antu R-band observations (2000)
Palazzi, E., Masetti, N., Pian, E., Rol, E., Fynbo, J., ...
Gamma-ray bursts - pushing limits with the VLT (2000)
Pedersen, H., Boer, M., Beuermann, K., Castro-Tirado, A.J., Fruchter, A., ...
Microquasars are binary systems in our Galaxy which sporadically eject matter at relativistic speeds along bipolar jets. While phenomenologically similar to quasars, their vicinity allows much more...
Search for X-ray Afterglows from Gamma-Ray Bursts in the RASS (1999)
Greiner, J., Hartmann, D. H., Voges, W., Boller, Th., Schwarz, R., Zharykov, S.
We report on a search for X-ray afterglows from gamma-ray bursts using the ROSAT all-sky survey (RASS) data. If the emission in the soft X-ray band is significantly less beamed than in the gamma-ray...
Search for GRB X-ray afterglows in the ROSAT all-sky survey (1999)
Greiner, J., Hartmann, D. H., Voges, W., Boller, Th., Schwarz, R., Zharikov, S.
We describe a search for X-ray afterglows from gamma-ray bursts using the ROSAT all-sky survey (RASS) data. If the emission in the soft X-ray band is significantly less beamed than in the gamma-ray...
Greiner, J., Castro-Tirado, A. J., Boller, Th., Duerbeck, H. W., Covino, S., Israel, G. L., ...
We have performed a ROSAT follow-up observation of the X-ray transient SAX J1810.8-2609 on March 24, 1998 and detected a bright X-ray source (named RX J1810.7-2609) which was not detected during the...
V751 Cyg and V Sge as transient supersoft X-ray sources (1999)
I review the observational evidence for luminous, soft X-ray emission during optical low-states in the two cataclysmic variables V751 Cyg and V Sge, and discuss the possible link to the canonical...
Schwope, A. D., Schwarz, R., Greiner, J.
We present a low-resolution discovery spectrum and CCD-photometry of the bright X-ray source 1RXS J012851.9-233931 found in the ROSAT All-Sky Survey. These first observations suggest that the source...
Optical and near-infrared observations of the GRB 970616 error box (1999)
Gorosabel, J., Castro-Tirado, A. J., Pedersen, H., Greiner, J., Thompson, D., Guerrero, M., ...
We report on near-infrared and optical observations of the GRB 970616 error box and of the X-ray sources discovered by ASCA and ROSAT in the region. No optical transient was found either within the...
Search for GRB afterglows in the ROSAT all-sky survey (1999)
Greiner, J., Voges, W., Boller, Th., Hartmann, D.
We report on the status of our search for X-ray afterglows of gamma-ray bursts (GRBs) using the ROSAT all-sky survey data. The number of potential X-ray afterglow candidates with respect to the...
The WC6 Wolf-Rayet star MLA 1159 in M31 and its ionization nebula BA 1-642 (1999)
Greiner, J., Tovmassian, G. H., Komossa, S., Rosado, M., Arrieta, A.
We report on optical imaging and spectroscopic observations of the Wolf-Rayet candidate star MLA 1159 and the surrounding ionization nebula BA 1-642 in the Andromeda Galaxy. Though both objects have...
The X-ray, Optical and Infrared Counterpart to GRB 980703 (1999)
Vreeswijk, P. M., Galama, T. J., Owens, A., Oosterbroek, T., Geballe, T. R., Van Paradijs, J., ...
We report on X-ray, optical and infrared follow-up observations of GRB 980703. We detect a previously unknown X-ray source in the GRB error box; assuming a power law decline we find for its decay...
A ROSAT Deep Survey of Four Small Gamma-Ray Burst Error Boxes (1999)
Hurley, K., Li, P., Boer, M., Cline, T., Fishman, G. J., Meegan, C., ...
We have used the ROSAT High Resolution Imager to search for quiescent X-ray counterparts to four gamma-ray bursts which were localized to small (< 10 sq. arcmin.) error boxes with the Interplanetary...
The x-ray, optical and infrared counterpart to GRB 980703 (1999)
Vreeswijk, P.M., Galama, T.J., Owens, A.N., Oosterbroek, T., Geballe, T.R., Paradijs, J.A. Van, ...
A ROSAT deep survey of four small gamma-ray burst error boxes (1999)
Hurley, K.C., Li, P., Boer, M., Cline, T., Fishman, G.J., Meegan, C.A., ...
A search for optical afterglow from GRB 970828 (1999)
Groot, P.J., Galama, T.J., Paradijs, J.A. Van, Kouveliotou, C., Bloom, J., ...
The X-Ray, Optical, And Infrared Counterpart To GRB 980703 (1999)
P. M. Vreeswijk, T. J. Galama, A. Owens, T. Oosterbroek, T. R. Geballe, J. Van Paradijs, ...
We report on X-ray, optical, and infrared follow-up observations of GRB 980703. We detect a previously unknown X-ray source in the GRB error box ; assuming a power-law decline, we nd for its decay...
Transient supersoft X-ray emission from V751 Cyg during the optical low-state (1998)
Greiner, J., Tovmassian, G. H., DiStefano, R., Prestwich, A., González-Riestra, R., Szentasko, L., ...
We have observed V751 Cyg with the ROSAT HRI during its recent optical low state and clearly detect it at a count rate of 0.015 cts/s. The X-ray intensity is a factor of ~20 higher than the upper...
The optical/IR counterpart of the 3 July 1998 gamma-ray burst and its evolution (1998)
Castro-Tirado, A. J., Zapatero-Osorio, M. R., Gorosabel, J., Greiner, J., Heidt, J., Herranz, D., ...
We imaged the X-ray error box of GRB 980703, beginning 22.5 hours after the gamma--ray event, in both the optical R and near-infrared H bands. A fading optical/IR object was detected within the X-ray...
ASCA Observation of the Galactic Jet Source XTE J0421+560 (CI Cam) in Outburst (1998)
Ueda, Y., Ishida, M., Inoue, H., Dotani, T., Greiner, J., Lewin, W. H. G.
We observed the newly discovered Galactic jet source XTE J0421+560 (= CI Cam) with ASCA from 1998 April 3.3 to April 4.1 (UT), three days after the beginning of the outburst. The X-ray intensity in...
High spectral and time resolution observations of the eclipsing polar RX J0719.2+6557 (1998)
Tovmassian, G. H., Szkody, P., Greiner, J., Vrielmann, S., Kroll, P., Howell, S., ...
We present phase-resolved spectral and multicolor CCD-photometric observations of the eclipsing polar RX J0719.2+6557 obtained with relatively high time (~600 sec/15 sec) and spectral (2.1 A)...
S 10943 Vulpeculae: A New ROSAT Selected Dwarf Nova, probably of SU Ursae Majoris Subclass (1998)
Richter, G. A., Greiner, J., Kroll, P.
We have identified the ROSAT all-sky survey source RX J1953.1+2115 with a newly discovered dwarf novae (named S 10943 Vulpeculae) with a recurrence time of 83.6 days. With the expected period of ~2.8...
RXTE Spectroscopy of GRS 1915+105 (1998)
Greiner, J., Morgan, E., Remillard, R.
The galactic superluminal motion source GRS 1915+105 has been extensively observed with the RXTE satellite over the last two years. More than 250 RXTE pointings have been performed until mid-May 1998...
Discovery of the peculiar supernova 1998bw in the error box of GRB980425 (1998)
Galama, T. J., Vreeswijk, P. M., Van Paradijs, J., Kouveliotou, C., Augusteijn, T., Hainaut, O. R., ...
The discovery of X-ray, optical and radio afterglows of gamma-ray bursts (GRBs) and the measurements of the distances to some of them have established that these events come from Gpc distances and...
Soft X-ray emission of VY Scl stars during optical high state (1998)
I have collected all available ROSAT observations of VY Scl stars including those during the all-sky survey to investigate the presence, strength and spectrum of soft X-ray emission (0.1-2.4 keV) of...
ASCA Observation of the polar RX J1802.1+1804 (1998)
Ishida, M., Greiner, J., Remillard, R. A., Motch, C.
We present X-ray data of RX J1802.1+1804 obtained by ASCA. Although it shows a clear orbital intensity modulation with an amplitude of nearly 100% below 0.5 keV in ROSAT data, the ASCA light curves...
Detection of the near-infrared counterpart of GRB 971214 3.2 hours after the gamma-ray event (1998)
Gorosabel, J., Castro-Tirado, A. J., Willott, C. J., Hippelein, H., Greiner, J., Shlyapnikov, A., ...
We report the detection of the GRB 971214 counterpart in the near-infrared by means of two images in the K'-band taken at Calar Alto only ~3.5 and ~5 hours after the gamma-ray event. We detect the...
High resolution imaging of the X-ray afterglow of GRB970228 with ROSAT (1998)
Frontera, F., Greiner, J., Antonelli, L. A., Costa, E., Fiore, F., Parmar, A. N., ...
We report results of a ROSAT High-Resolution Imager (HRI) observation of the X-ray error box given by the BeppoSAX Wide Field Camera for the gamma-ray burst that occurred on 1997 February 28. The...
The X-ray stream-eclipsing polar RX J1802.1+1804 (1998)
Greiner, J., Remillard, R. A., Motch, C.
We present X-ray and optical data of the newly discovered AM Her variable RX J1802.1+1804 = V884 Her. This X-ray source was observed in the ROSAT All-Sky-Survey in September 1990 and subsequently...
Tovmassian, G. H., Greiner, J., Kroll, P., Szkody, P., Mason, P. A., ...
A new cataclysmic variable is identified as the optical counterpart of the faint and hard X-ray source RX J0757.0+6306 discovered during the ROSAT all-sky survey. Strong double-peaked emission lines...
Fading X-ray afterglows from GRB's observed with ASCA (1998)
Murakami, T., Ueda, Y., Shibata, R., Fujimoto, R., Ishida, M., Udo, S., ...
An unusual supernova in the error box of the GRB of 25 April 1998 (1998)
Galama, T.J., Vreeswijk, P.M., Paradijs, J.A. Van, Kouveliotou, C., Augusteijn, T., Hainaut, O.R., ...
A search for optical afterglow from GRB 970828 (1998)
Groot, P.J., Galama, T.J., Paradijs, J. Van, Kouveliotou, C., Bloom, J., ...
We report on the results of R-band observations of the error box of the gamma -ray burst of 1997 August 28 made between 4 hr and 8 days after this burst occurred. No counterpart was found varying by...
The rapid decay of the optical emission from GRB 980326 and its possible implications (1998)
Groot, P.J., Galama, T.J., Vreeswijk, P.M., Pian, E., Palazzi, E., ...
A Search for Optical Afterglow from GRB 970828 (1998)
Groot, PJ, Galama, TJ, Van Paradijs, J, Kouveliotou, C, Wijers, RAMJ, Bloom, J, ...
Rapid ROSAT Observations of small Gamma-Ray Burst Error Boxes (1997)
I summarize the use of the ROSAT satellite over the last months for the investigation of well localized GRB error boxes. In particular, I report about the attempts for and results of quick follow-up...
RX J0719.2+6557: A new eclipsing polar (1997)
Tovmassian, G. H., Greiner, J., Kroll, P., Krautter, J., Thiering, I., ...
A new magnetic cataclysmic variable is identified as the counterpart of the X-ray source RX J0719.2+6557. The emission lines show radial velocity variations with a period of 98.2 min. This coincides...
RXTE Observations of GRS 1915+105 (1997)
Greiner, J., Morgan, E., Remillard, R.
We report on extensive X-ray observations of the galactic superluminal motion source GRS 1915+105 with the RXTE satellite over the last year. More than 130 RXTE pointings have been performed. GRS...
Gamma-ray bursts with ROSAT (1997)
I review the use of ROSAT over the last years for the investigation of well localized gamma-ray burst (GRB) error boxes. In particular, I cover (i) the systematic study of several dozens of IPN...
Boer, M., Motch, C., Greiner, J., Voges, W., Kahabka, P., Pedersen, H.
We report on observations of the 1978, November 19 Gamma-Ray Burst source, performed with the ROSAT X-ray HRI experiment. Two sources were detected, one of which is possibly variable. The latter...
Gamma-Ray Bursts from Radio-Quiet Quasars (1996)
Schartel, N., Andernach, H., Greiner, J.
We study positional coincidences between gamma-ray bursts in the BATSE 3B catalogue and quasars/AGN taken from the Veron-Cetty & Veron compilation. For most classes of AGN, for BL Lac objects and for...
HV 2554 and the supersoft X-ray source RX J0527.8-6954 (1996)
We have re-identified HV 2554 on plates of the Harvard College Observatory. Using photographic plates with higher sensitivity and spatial resolution taken within the EROS programme we do not find any...
Greiner, J., Bickert, K., Luthardt, R., Viotti, R., Altamore, A., Gonzalez-Riestra, R., ...
We present the results of an extensive campaign of coordinated X-ray (ROSAT) and UV (IUE) observations of the symbiotic star AG Dra during a long period of quiescence (1990-1993) followed by two...
RXTE observations of GRS 1915+105 (1996)
Greiner, J., Morgan, E. H., Remillard, R. A.
The galactic superluminal motion source GRS 1915+105 was observed with RXTE at several occasions during its ongoing active state. The observed X-ray intensity changes drastically on a variety of time...
RX J0719.2+6557: A New Eclipsing Polar (1996)
Tovmassian, G., Greiner, J., Kroll, P., Krautter, J., Thiering, I., ...
A new magnetic, eclipsing cataclysmic variable is identified as the counterpart of the X-ray source RX J0719.2+6557 detected during the ROSAT all-sky survey. The relative phasing of photometric and...
X-Ray Observations of GRS 1915+105 (1996)
Greiner, J., Harmon, B. A., Paciesas, W. S., Morgan, E. H., Remillard, R. A.
A comparison of ROSAT observations with simultaneous BATSE monitoring data shows a different intensity evolution in the soft and hard X-ray band of GRS 1915+105 since 1992. In addition, fits of...
ROSAT observation of GRS 1739-278 (1996)
Greiner, J., Dennerl, K., Predehl, P.
We have observed GRS 1739-278 with the ROSAT HRI on March 31, 1996. The improved X-ray position proves the identification with an earlier discovered variable radio source. We derive an extinction of...
Catalog of Luminous Supersoft X-ray Sources (1996)
This catalog comprises an up-to-date list of luminous (>10^36 erg/s) supersoft X-ray sources. We include in this catalog accreting binary sources of high luminosity which are thought to be in a state...
A Systematic Search for Supersoft X-Ray Sources in the ROSAT All-Sky Survey (1996)
We have conducted a systematic search for supersoft X-ray sources using the ROSAT all-sky survey data. With the optical identification of the selected sources being almost complete, we discuss the...
Supersoft X-Ray Sources in M31 (1996)
Greiner, J., Supper, R., Magnier, E. A.
The nearby Andromeda galaxy (M31) has been observed with the ROSAT PSPC in a mosaic of 6 pointings with 25 ksec each. In the paper describing the results on the total sample of detected sources,...
UV and X-Ray Monitoring of AG Draconis During the 1994/1995 Outbursts (1996)
Greiner, J., Bickert, K., Luthardt, R., Viotti, R., Altamore, A., Gonzalez-Riestra, R.
The recent 1994-1995 active phase of AG Draconis has given us for the first time the opportunity to follow the full X-ray behaviour of a symbiotic star during two successive outbursts and to compare...
The Long-Term X-Ray Lightcurve of RX J0527.8-6954 (1996)
Greiner, J., Schwarz, R., Hasinger, G., Orio, M.
We present further observational data of the supersoft X-ray source RX J0527.8-6954 exhibiting a continuous decline over the past 5 yrs. With no clear trend of a concordant temperature decrease this...
Rapid follow-up ROSAT observation of GRB 940301 (1996)
Greiner, J., Bade, N., Hurley, K., Kippen, R. M., Laros, J.
The strong GRB of March 1, 1994 was imaged by COMPTEL and found to have an identical location within the errors as a burst which occurred on July 4, 1993. This location coincidence had prompted...
The long-term X-ray lightcurve of RX J0527.8--6954 (1996)
Greiner, J., Schwarz, R., Hasinger, G., Orio, M.
Supersoft X-ray sources are commonly believed to be stably burning white dwarfs. However, the observations of some supersoft sources show dramatic variability of their X-ray flux on timescales...
Four new active galaxies with steep soft X-ray spectra (1995)
Greiner, J., Danner, R., Bade, N., Richter, G. A., Kroll, P., Komossa, S.
We have discovered four AGN in the ROSAT all-sky-survey data with very steep X-ray spectra. We apply several models to these X-ray spectra with emphasis on warm absorber models which give an adequate...
Combined fitting of Ulysses/COMPTEL GRB spectra (1995)
Aigner, T, Greiner, J, Sommer, M, Williams, O R, Kippen, R M, Hurley, K, ...
Analysis of COMPTEL gamma-ray burst locations and spectra (1995)
Kippen, R M, Ryan, J, Connors, A, McConnel, M, Winkler, C M, Hanlon, L O, ...
The first two years of the BATSE/COMPTEL/NMSU GRB rapid response network (1995)
McNamara, B J, Harrison, T E, Ryan, J, Kippen, R M, Bennett, K, Hanlon, L O, ...
Multifrequency Observations of Gamma-Ray Burst (1995)
Neither a flaring nor a quiescent counterpart to a gamma-ray burst has yet been convincingly identified at any wavelength region. The present status of the search for counterparts of classical...
Search for GRB counterparts (1995)
A state-of-the-art review is given on the search for counterparts of $\gamma$-ray bursts. Particular emphasis is put on the search for flaring counterparts, i.e. emission during or shortly after the...
The gamma-ray burst GB 920622 (1995)
Greiner, J., Sommer, M., Bade, N., Fishman, G. J., Hanlon, L. O., Hurley, K., ...
We have analyzed the Ulysses, BATSE, and COMPTEL spectral data from the $\gamma$-ray burst of June 22, 1992 (GB 920622). COMPTEL data reveal a hard to soft evolution within the first pulse of the...
Strong gamma-ray bursts observed by COMPTEL during its second year of operation (1995)
Kippen, R M, Connors, A, McConnell, M, Ryan, J, Collmar, W, Greiner, J, ...
X-ray emission from the PSR B1259--63 system near apastron (1995)
Greiner, J., Tavani, M., Belloni, T.
The PSR B1259--63 system contains a 47 ms radio pulsar in a highly eccentric binary with a Be-star companion. Strongly time variable X-ray emission was reported from this system as the pulsar was...
Optical variability of the supersoft source RX~J0019.8+2156 (1994)
We present a 100 yr optical lightcurve of the recently discovered supersoft X-ray source RX~J0019.8+2156 as deduced from photographic plates of Harvard and Sonneberg Observatory. Apart from the...
A large amplitude flaring dMe star in the 1978 October 6B $\gamma$-ray burst error box (1994)
Spectroscopic observations provide evidence that the optical transient object observed in 1966 on archival plates of Sonneberg Observatory is a B=18.5 dMe star. For an assumed flare duration of 40...
G272.2--3.2: A centrally filled and possibly young SNR discovered by ROSAT (1994)
Greiner, J., Egger, R., Aschenbach, B.
We report the discovery of a new SNR in the \ros All-Sky-Survey data. The SNR has a nearly circular shape with a diameter of about 15 arcmin. The surface brightness is rather uniform over the...
ROSAT and BATSE observations of GRS 1915+105 (1994)
Greiner, J., Snowden, S., Harmon, B. A., Kouveliotou, C., Paciesas, W.
MeV emission from the black-hole candidate GRO J0422+32 measured with COMPTEL (1994)
Van Dijk, R., Bloemen, H., Hermsen, W., Collmar, W., Diehl, R., Greiner, J., ...
Spectral properties of gamma-ray bursts observed by COMPTEL (1994)
Hanlon, L. O., Bennett, K., Williams, O. R., Winkler, C., Collmar, W., Diehl, R., ...
RULER: an instrument to measure gamma-ray burster distances (1994)
Owens, A., Greiner, J., Mineo, T., Pounds, K., Rees, M., Sacco, B., ...
Recent small gamma-ray burst error boxes in the ROSAT all-sky survey (1994)
Boer, Michel, Greiner, J., Kahabka, P., Motch, C., Voges, W., Sommer, M., ...
The x-ray survey of the second catalog gamma-ray burst error boxes (1994)
Boer, Michel, Greiner, J., Kahabka, P., Motch, C., Voges, W.
First results of the BATSE/COMPTEL/NMSU rapid burst response campaign (1994)
Kippen, R. M., Connors, A., Macri, J., McConnell, M., Ryan, J., Collmar, W., ...
Simultaneous optical/gamma-ray observations of GRBs (1994)
Greiner, J., Wenzel, W., Hudec, R., Moskalenko, E. I., Metlov, V., Chernych, N. S., ...
COMPTEL Observations of GRB 930131 (1993)
Kippen, R.M., Connors, A., McConnell, M., Ryan, J., Collmar, W., Greiner, J., ...
COMPTEL Observations of GRB 930309 (1993)
Ryan, J.M., Kippen, R.M., McConnell, M., Varendorff, M., Greiner, J., Schonfelder, V., ...
Simultaneous optical/gamma-ray observations of GRBs (1993)
Greiner, J., Wenzel, W., Hudec, R., Pravec, P., Rezek, T., Nesvara, M., ...
ROSAT x-ray observations of GBS J0815-3245 = GRB 920501 (1993)
Boer, M., Hurley, K., Greiner, J., Sommer, M., Niel, M., Fishman, G. J., ...
COMPTEL Observations of GRB 930131 (1993)
Kippen, R.M., Connors, A., McConnell, M., Ryan, J., Collmar, W., Greiner, J., ...
COMPTEL Observations of GRB 930309 (1993)
Ryan, J.M., Kippen, R.M., McConnell, M., Varendorff, M., Greiner, J., Schonfelder, V., ...
Brügmann, B., Ghez, A. M., Greiner, J.
Recent progress in black hole research is illustrated by three examples. We discuss the observational challenges that were met to show that a supermassive black hole exists at the center of our...
Brügmann, B., Ghez, A. M., Greiner, J.
Recent progress in black hole research is illustrated by three examples. We discuss the observational challenges that were met to show that a supermassive black hole exists at the center of our...