Soft gamma-ray sources detected by INTEGRAL (2009)
Petry, D., Beckmann, V., Halloin, H., Strong, A.
We aim to exploit the available INTEGRAL/SPI data to provide time-averaged spectra of the brightest soft gamma-ray sources. Employing a maximum-likelihood fit technique for our SPI data analysis, we...
The Second INTEGRAL AGN Catalogue (2009)
Beckmann, V., Soldi, S., Ricci, C., Alfonso-Garzón, J., Courvoisier, T. J. -L., Domingo, A., ...
The INTEGRAL mission provides a large data set for studying the hard X-ray properties of AGN and allows testing of the unified scheme for AGN. We present analysis of INTEGRAL IBIS/ISGRI, JEM-X, and...
Pre-nova X-ray observations of V2491 Cyg (Nova Cyg 2008b) (2009)
Ibarra, A., Kuulkers, E., Osborne, J. P., Page, K., Ness, J. U., Saxton, R. D., ...
Classical novae are phenomena caused by explosive hydrogen burning on an accreting white dwarf. So far, only one classical nova has been identified in X-rays before the actual optical outburst...
Compton reflection in AGN with Simbol-X (2009)
Beckmann, V., Courvoisier, T. J. -L., Gehrels, N., Lubinski, P., Malzac, J., Petrucci, P. O., ...
AGN exhibit complex hard X-ray spectra. Our current understanding is that the emission is dominated by inverse Compton processes which take place in the corona above the accretion disk, and that...
Renewed activity from the X-ray transient SAXJ 1810.8-2609 with INTEGRAL (2008)
Fiocchi, M., Natalucci, L., Chenevez, J., Bazzano, A., Tarana, A., Ubertini, P., ...
We report on the results of INTEGRAL observations of the neutron star low mass X-ray binary SAX J1810.8-2609 during its latest active phase in August 2007. The current outburst is the first one since...
The efficient low-mass Seyfert MCG-05-23-016 (2008)
Beckmann, V., Courvoisier, T. J. -L., Gehrels, N., Lubinski, P., Malzac, J., ...
The Seyfert 1.9 galaxy MCG-05-23-016 has been shown to exhibit a complex X-ray spectrum. This source has moderate X-ray luminosity, hosts a comparably low-mass black hole, but accretes at a high...
Earlier activity from XTE J1739-302/IGR J17391-3021 detected by INTEGRAL (2008)
Chenevez, J., Beckmann, V., Kuulkers, E., Bird, A., Brandt, S., Courvoisier, T.J.L., ...
The recently reported outburst from the supergiant fast X-ray transient XTE J1739-302/IGR J17391-3021 (ATEL #1466) began already about five hours earlier than the Swift/BAT trigger on 2008-04-08. The...
Further observations of GRO J1750-27 (AX J1749.1-2639) with INTEGRAL (2008)
Brandt, S., Shaw, S., Hill, A., Kretschmar, P., Wijnands, R., Oosterbroek, T., ...
The transient accreting X-ray pulsar GRO J1750-27 (AX J1749.1-2639), which became active end of January 2008 (ATel #1376), has been repeatedly observed by the INTEGRAL Galactic Bulge monitoring...
Recent activity of the Rapid Burster (MXB 1730-335) (2008)
Kuulkers, E., Brandt, S., Markwardt, C., Remillard, R.A., Shaw, S., Beckmann, V., ...
Observations taken as part of the INTEGRAL Galactic bulge monitoring program (see ATel #1385) on 2008, February 23 13:32-17:13 (UT) showed bursting activity from the X-ray transient, the Rapid...
Hard X-ray activity of IGR J17473-2721 (2008)
Kuulkers, E., Shaw, S., Beckmann, V., Brandt, S., Chenevez, J., Courvoisier, T.J.L., ...
Persistent X-ray activity has been reported by Swift/XRT (ATel #1459) and RXTE/PCA (ATel #1460) from the transient IGR J17473-2721 (= XTE J1747-274; ATels #467, #498) after the detection of an X-ray...
INTEGRAL hard X-ray detection of HMXB GX 304-1 and H 1417-624 (2008)
Manousakis, A., Beckmann, V., Bianchin, V., Brandt, S., Chenevez, J., Hermsen, W., ...
We report on the first detection of the Be star HMXBs GX 304-1 and H 1417-624 above 20 keV with the IBIS/ISGRI X-ray imager on board INTEGRAL. From 2008-06-24 to 2008-07-09, INTEGRAL performed...
INTEGRAL spots renewed activity from H1743-322 (2008)
Kuulkers, E., Brandt, S., Budtz-Jorgensen, C., Chenevez, J., Shaw, S., Beckmann, V., ...
INTEGRAL Galactic Bulge monitoring (see ATels #438, #874, #1005, #1385) observations on UT 2008 Sep 23 08:51-12:34 reveal a new outburst of the Galactic black-hole candidate and X-ray transient...
Kuulkers, E., Beckmann, V., Shaw, S., Brandt, S., Chenevez, J., Courvoisier, T.J.L., ...
A new season of the INTEGRAL Galactic Bulge monitoring program (see ATels #438, #874, #1005; Kuulkers et al. 2007, A&A 466, 595) started, with observations on UT 11 Feb 2008, 16:33-18:07. We here...
Continuous brightening of IGR J17473-2721 (2008)
Baldovin Saavedra, C., Chenevez, J., Kuulkers, E., Beckmann, V., Bird, A., Brandt, S., ...
Renewed accretion activity has been reported by Swift/XRT (ATel #1459), XTE/PCA (ATel #1460) and INTEGRAL/IBIS/ISGRI (ATel #1461) from the RXTE transient IGR J17473-2721 (= XTE J1747-274; ATels #467,...
Hard X-ray Variability of AGN (2007)
Beckmann, V., Barthelmy, S. D., Courvoisier, T. J. -L., Gehrels, N., Soldi, S., Tueller, J., ...
Aims: Active Galactic Nuclei are known to be variable throughout the electromagnetic spectrum. An energy domain poorly studied in this respect is the hard X-ray range above 20 keV. Methods: The first...
Cygnus X-3 transition from the ultrasoft to the hard state (2007)
Beckmann, V., Soldi, S., Belanger, G., Brandt, S., Caballero-Garcia, M. D., De Cesare, G., ...
Aims: The nature of Cygnus X-3 is still not understood well. This binary system might host a black hole or a neutron star. Recent observations by INTEGRAL have shown that Cygnus X-3 was again in an...
The hard synchrotron X-ray spectrum of the TeV BL Lac 1ES 1426+428 (2007)
Wolter, A., Beckmann, V., Ghisellini, G., Tavecchio, F., Maraschi, L., Costamante, L., ...
We have observed 1ES 1426+428 with INTEGRAL detecting it up to $\sim$150 keV. The spectrum is hard, confirming that this source is an extreme BL Lac object, with a synchrotron component peaking, in a...
The nature of the hard state of Cygnus X-3 (2007)
Hjalmarsdotter, L., Zdziarski, A. A., Larsson, S., Beckmann, V., McCollough, M., Hannikainen, D. C., ...
The X-ray binary Cygnus X-3 is a highly variable X-ray source that displays a wide range of observed spectral states. One of the main states is significantly harder than the others, peaking at ~ 20...
A description of sources detected by INTEGRAL during the first 4 years of observations (2007)
Bodaghee, A., Courvoisier, T. J. -L., Rodriguez, J., Beckmann, V., Produit, N., Hannikainen, D., ...
Parameters from the literature, such as positions, photoelectric absorption (nH), spin and orbital periods, and distances or redshifts, were collected for all ~500 sources detected by INTEGRAL-ISGRI...
2003--2005 INTEGRAL and XMM-Newton observations of 3C 273 (2007)
Chernyakova, M., Neronov, A., Courvoisier, T. J. -L., Turler, M., Soldi, S., Beckmann, V., ...
The aim of this paper is to study the evolution of the broadband spectrum of one of the brightest and nearest quasars 3C 273. We analyze the data obtained during quasi-simultaneous INTEGRAL and XMM...
Paizis, A., Farinelli, R., Titarchuk, L., Courvoisier, T. J. -L., Bazzano, A., Beckmann, V., ...
We studied and compared the long-term average hard X-ray (>20keV) spectra of a sample of twelve bright low-mass X-ray binaries hosting a neutron star (NS). Our sample comprises the six well studied...
IGR j17497-2821: a new X-ray nova (2007)
Lubinski, P, Paltani, S, Produit, N, Zurita, J, Kuulkers, E, ...
Context. A new hard X-ray transient has been discovered by INTEGRAL on 2006 Sep. 17 at 1 degree from the Galactic Centre.
Cygnus X-3 transition from the ultrasoft to the hard state (2007)
Beckmann, V., Soldi, S., Bélanger, G., Brandt, S., Caballero-García, M. D., De Cesare, G., ...
IGR J17191-2821: a new hard X-ray transient detected by INTEGRAL (2007)
Turler, M., Balman, S., Bazzano, A., Beckmann, V., Belloni, T., Boggs, S., ...
INTEGRAL observation of a bright X-ray outburst of XTE J1739-302 / IGR J17391-3021 (2007)
Turler, M., Balman, S., Bazzano, A., Beckmann, V., Belloni, T., Boggs, S., ...
SAX J2103.5+4545 in outburst (2007)
Galis, R., Beckmann, V., Bianchin, V., Grebenev, S., McBreen, B., Mereghetti, S., ...
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.
GRO J1655-40: Early Stages of the 2005 Outburst (2006)
Shaposhnikov, N., Swank, J., Shrader, C. R., Rupen, M., Beckmann, V., Markwardt, C. B., ...
The black-hole X-ray binary transient GRO J1655-40 underwent an outburst beginning in early 2005. We present the results of our multi-wavelength observational campaign to study the early outburst...
Paizis, A., Farinelli, R., Titarchuk, L., Courvoisier, T. J. -L., Bazzano, A., Beckmann, V., ...
We studied and compared the long-term average hard X-ray (>20keV) spectra of a sample of twelve bright low-mass X-ray binaries hosting a neutron star (NS). Our sample comprises the six well studied...
The Hard X-ray 20-40 keV AGN Luminosity Function (2006)
Beckmann, V., Soldi, S., Shrader, C. R., Gehrels, N., Produit, N.
We have compiled a complete extragalactic sample based on 25,000 deg^2 to a limiting flux of 3E-11 ergs/cm**2/sec (7,000 deg^2 to a flux limit of 1E-11 ergs/cm**2/sec) in the 20 - 40 keV band with...
Beckmann, V., Soregaroli, C., Wesseler, J.H.H.
The future institutional environment for the co-existence of genetically modified (GM) crops, conventional crops and organic crops in Europe combines measures of ex-ante regulation and ex-post...
IGR J17497-2821: a new hard X-ray transient detected by INTEGRAL (2006)
Soldi, S., Walter, E., Eckert, D., Balman, S., Bazzano, A., Beckmann, V., ...
INTEGRAL observation of flaring activity of Mrk 421 (2006)
Lichti, G. G., Paltani, S., Mowlavi, M., Ajello, M., Collmar, W., Von Kienlin, A., ...
High state of Mkn 421 in the hard X-rays (2006)
Lichti, G. G., Neronov, A., Mowlavi, M., Ajello, M., Beckmann, V., Boisson, C., ...
Results from the First INTEGRAL AGN Catalogue (2005)
Beckmann, V., Soldi, S., Shrader, C. R., Gehrels, N.
We present results based on the first INTEGRAL AGN catalogue. The catalogue includes 42 AGN, of which 10 are Seyfert 1, 17 are Seyfert 2, and 9 are intermediate Seyfert 1.5. The fraction of blazars...
The First INTEGRAL AGN Catalog (2005)
Beckmann, V., Gehrels, N., Shrader, C. R., Soldi, S.
We present the first INTEGRAL AGN catalog, based on observations performed from launch of the mission in October 2002 until January 2004. The catalog includes 42 AGN, of which 10 are Seyfert 1, 17...
INTEGRAL observations of AGN in the Galactic Plane (2005)
Soldi, S., Beckmann, V., Bassani, L., Courvoisier, T. J. -L., Landi, R., Malizia, A., ...
We present results on approximately one year of INTEGRAL observations of six AGN detected during the regular scans of the Galactic Plane. The sample is composed by five Seyfert 2 objects (MCG...
The High Energy Spectrum of NGC 4151 (2005)
Beckmann, V., Shrader, C. R., Gehrels, N., Soldi, S., Lubinski, P., Zdziarski, A. A., ...
We present the first INTEGRAL observations of the type 1.5 Seyfert galaxy NGC 4151. Combining several INTEGRAL observations performed during 2003, totaling about 400 ks of exposure time, allows us to...
Ebisawa, K., Tsujimoto, M., Paizis, A., Hamaguchi, K., Bamba, A., Cutri, R., ...
Using the Chandra Advanced CCD Imaging Spectrometer Imaging array (ACIS-I), we have carried out a deep hard X-ray observation of the Galactic plane region at (l,b) ~ (28.5, 0.0), where no discrete...
INTEGRAL observations of the Be/X-ray binary EXO 2030+375 during outburst (2005)
Arranz, A. Camero, Wilson, C. A., Connell, P., Núñez, S. Martínez, Blay, P., Beckmann, V., ...
We present a type-I outburst of the high-mass X-ray binary EXO 2030+375, detected during INTEGRAL's Performance and Verification Phase in December 2002 (on-source time about 10e+06 seconds). In...
Swift, INTEGRAL, RXTE, and Spitzer reveal IGR J16283-4838 (2005)
Beckmann, V., Kennea, J. A., Markwardt, C., Paizis, A., Soldi, S., Rodriguez, J., ...
We present the first combined study of the recently discovered source IGR J16283-4838 with Swift, INTEGRAL, and RXTE. The source, discovered by INTEGRAL on April 7, 2005, shows a highly absorbed...
Hannikainen, D. C., Rodriguez, J., Vilhu, O., Hjalmarsdotter, L., Zdziarski, A. A., Belloni, T., ...
We report on the analysis of 100 ks INTEGRAL observations of the Galactic microquasar GRS 1915+105. We focus on INTEGRAL Revolution number 48 when the source was found to exhibit a new type of...
Unveiling the Nature of the High Energy Source IGR J19140+0951 (2004)
Rodriguez, J., Cabanac, C., Hannikainen, D. C., Beckmann, V., Shaw, S. E., Schultz, J.
We report on high energy observations of IGR J19140+0951 performed with RXTE on three occasions in 2002, 2003 and 2004, and INTEGRAL during a very well sampled and unprecedented high energy coverage...
INTEGRAL observations of the field of the BL Lacertae object S5~0716+714 (2004)
Pian, E., Foschini, L., Beckmann, V.
We have performed observations of the blazar S5 0716+714 with INTEGRAL on 2-6 April 2004. In the first months of 2004, the source had increased steadily in optical brightness and had undergone two...
A Chandra Deep X-ray Exposure on the Galactic Plane and Near Infrared Identification (2004)
Ebisawa, K., Paizis, A., Couvoisier, T. J. -L., Dubath, P., Tsujimoto, M., Hamaguchi, K., ...
Using the Chandra ACIS-I instruments, we have carried out a deep X-ray observation on the Galactic plane region at (l,b) ~ (28.5, 0.0), where no discrete X-ray sources have been known previously. We...
Gamma-Ray Bursts Observed with the Spectrometer SPI Onboard INTEGRAL (2004)
Von Kienlin, A., Rau, A., Beckmann, V., Deluit, S.
The spectrometer SPI is one of the main detectors of ESA's INTEGRAL mission. The instrument offers two interesting and valuable capabilities for the detection of the prompt emission of Gamma-ray...
INTEGRAL and XMM-Newton Spectral Studies of NGC 4388 (2004)
Beckmann, V., Gehrels, N., Favre, P., Walter, R., Courvoisier, T. J. -L., ...
We present first INTEGRAL and XMM-Newton observations of a Seyfert galaxy, the type 2 AGN NGC 4388. Several INTEGRAL observations performed in 2003 allow us to study the spectrum in the 20 - 300 keV...
The INTEGRAL LMXRB Monitoring Programme (2004)
Paizis, A., Courvoisier, T. J. -L., Vilhu, O., Chernyakova, M., Tikkanen, T., Bazzano, A., ...
Our collaboration is responsible for the study of a sample of 72 low mass X-ray binaries (LMXRB) using the INTEGRAL Core Programme data. In this paper we describe the monitoring programme we have...
Serpens X-1 observed by INTEGRAL (2004)
Masetti, N., Foschini, L., Palazzi, E., Beckmann, V., Lund, N., Brandt, S., ...
Here we report results of an INTEGRAL-AO1 observation of the X-ray burst and atoll source Ser X-1 performed in May 2003. The object was observed for a total on-source time of 400 ks but nearly 8...
Scientific Performance of the ISDC Quick Look Analysis (2004)
Shaw, S. E., Mowlavi, N., Ebisawa, K., Paizis, A., Rodriguez, J., Zurita, J., ...
The INTEGRAL Science Data Centre (ISDC) routinely monitors the Near Real Time data (NRT) from the INTEGRAL satellite. A first scientific analysis is made in order to check for the detection of new,...
INTEGRAL Observations of Cygnus X-3 (2004)
Hjalmarsdotter, L., Zdziarski, A. A., Paizis, A., Beckmann, V., Vilhu, O.
The peculiar X-ray binary Cygnus X-3 has been observed on several occasions with the X/gamma-ray instruments on board INTEGRAL. We have collected data from available public and Galactic Plane Scan...
INTEGRAL and RXTE observations of broad-line radio galaxy 3C 111 (2004)
Chernyakova, M., Favre, P., Courvoisier, T. J. -L., Lutovinov, A., Molkov, S., Beckmann, V., ...
3C 111 is an X-ray bright broad-line radio galaxy which is classified as a Fanaroff-Riley type II source with a double-lobe/single jet morphology, and reported superluminal motion. It is a well-known...
BeppoSAX observations of the quasar Markarian 205 (2004)
Favre, P., Beckmann, V., Courvoisier, T. J. -L.
We present the first BeppoSAX observation (0.1 to 220 keV) of the quasar Mrk 205. We have searched for the unusual Fe line profile claimed in the XMM-Newton spectrum which has been widely discussed...
The Gamma-ray bright BL Lac object RX J1211+2242 (2004)
Beckmann, V., Favre, P., Tavecchio, F., Bussien, T., Fliri, J., Wolter, A.
RX J1211+2242 is an optically faint (B = 19.2 mag) but X-ray bright (2 - 10 keV flux fx = 5e-12 erg/cm**2/sec) AGN, which has been shown to be a BL Lac object at redshift z = 0.455. The ROSAT X-ray,...
INTEGRAL Spectrometer Analysis of GRB030227 & GRB030131 (2004)
Moran, L., Hanlon, L., McBreen, B., Preece, R., Kaneko, Y., Williams, O. R., ...
The spectrometer SPI on board INTEGRAL is capable of high-resolution spectroscopic studies in the energy range 20keV to 8MeV for GRBs which occur within the fully coded field of view (16 degrees...
Time resolved spectroscopy of GRB030501 using INTEGRAL (2004)
Beckmann, V., Borkowski, J., Courvoisier, T. J.-L., Götz, D., Favre, P., Hudec, R., ...
The INTEGRAL ground segment (2004)
Walter, R., Aubord, A., Bartholdi, P., Beck, M., Beckmann, V., Binko, P., ...
INTEGRAL spectrometer analysis of GRB030227 & GRB030131 (2004)
Moran, L., Hanlon, L., McBreen, B., Preece, R., Kaneko, Y., Williams, O. R., ...
INTEGRAL-RXTE observations of Cygnus X-1 (2004)
Pottschmidt, K., Wilms, J., Nowak, M. A., Dubath, P., Kreykenbohm, I., Gleissner, T., ...
Scientific performance of the ISDC quick look analysis (2004)
Shaw, S. E., Mowlavi, N., Ebisawa, K., Paizis, A., Rodriguez, J., Zurita, J., ...
INTEGRAL/RXTE observations of Cygnus X-1 (2004)
Wilms, J., Pottschmidt, K., Nowak, M. A., Chernyakova, M., Rodriguez, J., Zdziarski, A. A., ...
GRB 021219: the first Gamma-Ray Burst localized in real time with IBAS (2003)
Mereghetti, S., Gotz, D., Beckmann, V., Von Kienlin, A., Ubertini, P., Bazzano, A., ...
On December 19, 2002, during the Performance and Verification Phase of INTEGRAL, a Gamma-Ray Burst (GRB) has been detected and localized in real time with the INTEGRAL Burst Alert System (IBAS). Here...
First INTEGRAL observations of Cygnus X-3 (2003)
Vilhu, O., Hjalmarsdotter, L., Zdziarski, A. A., Paizis, A., McCollough, M. L., Beckmann, V., ...
We present the first INTEGRAL results on Cyg X-3 from the PV phase observations of the Cygnus region. The source was clearly detected by the JEM-X, ISGRI and SPI detectors. The INTEGRAL observations...
Von Kienlin, A., Beckmann, V., Rau, A., Arend, N., Bennett, K., McBreen, B., ...
The spectrometer SPI, one of the two main instruments of the INTEGRAL spacecraft, offers significant gamma-ray burst detection capabilities. In its 35 deg (full width) field of view SPI is able to...
Von Kienlin, A., Beckmann, V., Covino, S., Goetz, D., Lichti, G. G., Malesani, D., ...
GRB030320 is the 5th Gamma-ray burst (GRB) detected by INTEGRAL in the field of view (FoV). It is so far the GRB with the largest off-axis angle with respect to the INTEGRAL pointing direction, near...
Simultaneous observations of the quasar 3C 273 with INTEGRAL, XMM-Newton and RXTE (2003)
Courvoisier, T. J. -L., Beckmann, V., Bourban, G., Chenevez, J., Chernyakova, M., Deluit, S., ...
INTEGRAL has observed the bright quasar 3C 273 on 3 epochs in January 2003 as one of the first observations of the open programme. The observation on January 5 was simultaneous with RXTE and...
First INTEGRAL Observations of Eight Persistent Neutron Star Low Mass X-ray Binaries (2003)
Paizis, A., Beckmann, V., Courvoisier, T. J. -L., Vilhu, O., Lutovinov, A., Ebisawa, K., ...
Early results from the INTEGRAL Core Program, for a sample of eight persistently bright neutron star low mass X-ray binaries in the energy range from 5 keV to 200 keV are presented. It is shown that...
The INTEGRAL Science Data Centre (ISDC) (2003)
Courvoisier, T. J. -L., Walter, R., Beckmann, V., Dean, A. J., Dubath, P., Hudec, R., ...
The INTEGRAL Science Data Centre (ISDC) provides the INTEGRAL data and means to analyse them to the scientific community. The ISDC runs a gamma ray burst alert system that provides the position of...
GRB021125: the first GRB imaged by INTEGRAL (2003)
Malaguti, G., Bazzano, A., Beckmann, V., Bird, A. J., Del Santo, M., Di Cocco, G., ...
In the late afternoon of November 25, 2002 a gamma-ray burst (GRB) was detected in the partially coded field of view (about 7.3 deg from the centre) of the imager IBIS on board the INTEGRAL...
First results from the INTEGRAL Galactic plane scans (2003)
Winkler, C., Gehrels, N., Schoenfelder, V., Strong, A. W., Wunderer, C., ...
Scans of the Galactic plane performed at regular intervals constitute a key element of the guaranteed time observations of the INTEGRAL observing programme. These scans are done for two reasons:...
Time resolved spectroscopy of GRB030501 using INTEGRAL (2003)
Beckmann, V., Borkowski, J., Courvoisier, T. J. -L., Goetz, D., Hudec, R., Hroch, F., ...
The Gamma-ray instruments on-board INTEGRAL offer an unique opportunity to perform time resolved analysis on GRBs. The imager IBIS allows accurate positiioning of GRBs and broad band spectral...
A Hard Medium Survey with ASCA. IV: the Radio-Loud Type 2 QSO AXJ0843+294 2 (2003)
Della Ceca, R., Braito, V., Beckmann, V., Caccianiga, A., Cagnoni, I., Gioia, I. M., ...
We discuss the X-ray, optical and radio properties of AX J0843+2942, a high luminosity Type 2 AGN found in the ASCA Hard Serendipitous Survey. The X-ray spectrum is best described by an absorbed...
INTEGRAL and XMM-Newton observations of the weak GRB 030227 (2003)
Mereghetti, S., Gotz, D., Tiengo, A., Beckmann, V., Borkowski, J., Courvoisier, T. J. -L., ...
We present INTEGRAL and XMM-Newton observations of the prompt gamma-ray emission and the X-ray afterglow of GRB030227, the first GRB for which the quick localization obtained with the INTEGRAL Burst...
The HRX-BL Lac sample - evolution of BL Lac objects (2003)
Beckmann, V., Engels, D., Bade, N., Wucknitz, O.
The unification of X-ray and radio selected BL Lacs has been an outstanding problem in the blazar research in the past years. Recent investigations have shown that the gap between the two classes can...
Beckmann, V., Wesseler, J.H.H.
Integrated Pest Management (IPM) is an important component of sustainable agriculture. Farmers who switch from a more capital-intensive pesticide-based pest management strategy to IPM have to...
Integral and XMM-Newton observations of the weak gamma-ray burst GRB 030227 (2003)
Mereghetti, S., Götz, D., Tiengo, A., Beckmann, V., Borkowski, J., Courvoisier, T. J.-L., ...
The INTEGRAL Science Data Centre (ISDC) (2003)
Courvoisier, T. J.-L., Walter, R., Beckmann, V., Dean, A. J., Dubath, P., Hudec, R., ...
SPI-specific analysis method and software overview (2003)
Diehl, R., Baby, N., Beckmann, V., Connell, P., Dubath, P., Jean, P., ...
GRB 021125 : The first GRB imaged by INTEGRAL (2003)
Malaguti, G., Bazzano, A., Beckmann, V, Bird, A. J., Del Santo, M., Di Cocco, G., ...
Time resolved spectroscopy of GRB 030501 using INTEGRAL (2003)
Beckmann, V., Borkowski, J., Courvoisier, T. J.-L., Götz, D., Hudec, R., Hroch, F., ...
First results from the INTEGRAL galactic plane scans (2003)
Winkler, C., Gehrels, N., Schönfelder, V., Strong, A. W., Wunderer, C., ...
INTEGRAL-RXTE observations of Cygnus X-1 (2003)
Pottschmidt, K., Wilms, J., Chernyakova, M., Nowak, M. A., Rodriguez, J., Zdziarski, A. A., ...
First INTEGRAL observations of Cygnus X-3 (2003)
Vilhu, O., Hjalmarsdotter, L., Zdziarski, A. A., Paizis, A., McCollough, M. L., Beckmann, V., ...
GRB 021219: the first gamma-ray burst localized in real time with IBAS (2003)
Mereghetti, S., Götz, D., Beckmann, V., Kienlin, A. Von, Ubertini, P., Bazzano, A., ...
Ebisawa, Ken, Beckmann, V., Courvoisier, T. J. -L., Dubath, P., Kaneda, H., Maeda, Y., ...
We have carried out a deep X-ray observation on a typical Galactic plane region with the Chandra ACIS-I instrument with unprecedented sensitivity and spatial resolution, and detected 274 unidentified...
The INTEGRAL Science Data Centre (2002)
The INTEGRAL Science Data Centre (ISDC) processes, archives and distributes data from the INTEGRAL mission. At the ISDC incoming data from the satellite are processed and searched for transient...
BeppoSAX Spectral Survey of BL Lacs - new spectra and results (2001)
Beckmann, V., Wolter, A., Celotti, A., Costamante, L., Ghisellini, G., Maccacaro, T., ...
We present BeppoSAX LECS, MECS, and PDS spectra of eleven X-ray selected BL Lacertae objects. Combining these sources with the ones presented elsewhere we have a sample of 21 BL Lacs from the...
Della Ceca, R., Pellegrini, S., Bassani, L., Beckmann, V., Cappi, M., Palumbo, G. G. C., ...
We discuss BeppoSAX observations and archive ASCA data of NGC 7679, a nearby, nearly face-on SB0 galaxy in which starburst and AGN activities coexist. The X-ray observations reveal a bright...
The ASCA HSS: Looking for Type 2 AGN (2000)
Della Ceca, R., Braito, V., Beckmann, V., Cagnoni, I., Maccacaro, T.
We will briefly discuss the X-ray spectral properties of the objects in the ASCA Hard Serendipitous Survey (HSS) sample and its present AGN contents. We also present X-ray spectroscopy of two Type 2...
The Hamburg/ESO survey for bright QSOs. III. A large flux-limited sample of QSOs (2000)
Wisotzki, L., Christlieb, N., Bade, N., Beckmann, V., Koehler, T., Vanelle, C., ...
We present a new sample of 415 bright QSOs and Seyfert~1 nuclei drawn from the Hamburg/ESO survey (HES). The sample is spectroscopically 99 % complete and well-defined in terms of flux and redshift...
Sanchez-Fernandez, C., Castro-Tirado, A. J., Duerbeck, H. W., Mantegazza, L., Beckmann, V., Burwitz, V., ...
We report here optical observations during the September/October 1998 outburst of the black hole candidate XTE J1550-564. CCD photometry was obtained for the optical counterpart with the 0.9m Dutch...
Simultaneous Multifrequency Observations of the BL Lac MS 0205.7+3509 (1999)
Watson, D., Hanlon, L., McBreen, B., Smith, N., Tashiro, M., Foley, A. R., ...
Radio and optical observations of the possible microlensed BL Lac source MS 0205.7+3509 were obtained simultaneously with ASCA x-ray measurements in February 1997. A single power law model, with a...
Four magnetic DB white dwarfs discovered by the Hamburg/ESO survey (1998)
Reimers, D., Jordan, S., Beckmann, V., Christlieb, N., Wisotzki, L.
We report on seven peculiar faint blue stars found in the course of the Hamburg/ESO survey (HES) which appear to be magnetic white dwarfs (WDs) with non-hydrogen spectra. We show in particular that...
On the evolutionary behaviour of BL Lac objects (1998)
Engels, D., Barthel, P. D., Douglas, N. G., Beckmann, V., Bade, N., ...
Submitted to: Astron. Astrophys. Abstract: We present a new well defined sample of BL Lac objects selected from the ROSAT All-Sky Survey (RASS). The sample consists of 39 objects with 35 forming a...
On the evolutionary behaviour of BL Lac objects (1998)
Bade, N., Beckmann, V., Douglas, N. G., Barthel, P. D., Engels, D., Cordis, L., ...
We present a new well defined sample of BL Lac objects selected from the ROSAT All-Sky Survey (RASS). The sample consists of 39 objects with 35 forming a flux limited sample down to f_X = 8 x...
Data Processing at the INTEGRAL Science Data Centre
Beck, M, Aubord, A, Bartholdi, P, Beckmann, V, Binko, P, Borkowski, J, ...
INTEGRAL, the INTErnational Gamma Ray Astrophysics Laboratory of the European Space Agency, was launched on October 17, 2002. INTEGRAL operations are performed very successfully and the instruments...
The Role of Coordination and Cooperation for Bt-maize cultivation in Brandenburg, Germany
Consmuller, N., Beckmann, V., Schleyer, C.
Since 2006, several varieties of transgenic Bt-maize are approved for commercial cultivation in Germany. The German regulatory framework for growing these crops comprises ex-ante regulations as well...
Consmuller, N., Beckmann, V., Schleyer, C.
The regulatory framework for growing GM crops in Germany comprises quite liberal ex-ante regulations with very strict ex-post liability rules to protect other production forms from possible negative...
Mettepenningen, E., Beckmann, V., Eggers, J.
Despite a total budget increase for rural development in the new programming period (2007- 2013), for most older Member States in the now expanded European Union the multi-annual spending plan for...