The INTEGRAL view of Gamma-Ray Bursts (2009)
Ubertini, P., Corsi, A., Foley, S., McGlynn, S., De Cesare, G., Bazzano, A.
After more than six and half years in orbit, the ESA space observatory INTEGRAL has provided new, exciting results in the soft gamma-ray energy range (from a few keV to a few MeV). With the discovery...
The SXI telescope on board EXIST: scientific performances (2009)
Natalucci, L., Bazzano, A., Campana, S., Caraveo, P., Della Ceca, R., Grindlay, J. E., ...
The SXI telescope is one of the three instruments on board EXIST, a multiwavelength observatory in charge of performing a global survey of the sky in hard X-rays searching for Supermassive Black...
The 4th IBIS/ISGRI soft gamma-ray survey catalog (2009)
Bird, A. J., Bazzano, A., Bassani, L., Capitanio, F., Fiocchi, M., Hill, A. B., ...
In this paper we report on the fourth soft gamma-ray source catalog obtained with the IBIS gamma-ray imager on board the INTEGRAL satellite. The scientific dataset is based on more than 70Ms of high...
The Fermi/LAT sky as seen by INTEGRAL/IBIS (2009)
Ubertini, P., Sguera, V., Stephen, J. B., Bassani, L., Bazzano, A., Bird, A. J.
In this letter we present the result of the cross correlation between the 4th INTEGRAL/IBIS soft gamma-ray catalog, in the range 20-100 keV, and the Fermi LAT bright source list of objects emitting...
Soft gamma-ray optics: new Laue lens design and performance estimates (2009)
Barriere, N., Natalucci, L., Abrosimov, N., Von Ballmoos, P., Bastie, P., Courtois, P., ...
Laue lenses are an emerging technology based on diffraction in crystals that allows the concentration of soft gamma rays. This kind of optics that works in the 100 keV - 1.5 MeV band can be used to...
Accurate classification of 17 AGNs detected with Swift/BAT (2009)
Parisi, P., Masetti, N., Jiménez-Bailón, E., Chavushyan, V., Malizia, A., Landi, R., ...
Through an optical campaign performed at 5 telescopes located in the northern and the southern hemispheres, plus archival data from two on line sky surveys, we have obtained optical spectroscopy for...
The fraction of Compton-thick sources in an INTEGRAL complete AGN sample (2009)
Malizia, A., Stephen, J. B., Bassani, L., Bird, A. J., Panessa, F., Ubertini, P.
We study the NH distribution in a complete sample of 88 AGN selected in the 20-40 keV band from INTEGRAL/IBIS observations. We find that the fraction of absorbed (NH > 10^{22} cm^2) sources is 43%...
On the identification of the Fermi/LAT source 0FGL J2001.0+4352 with a BL Lac (2009)
Bassani, L., Landi, R., Masetti, N., Parisi, P., Bazzano, A., Ubertini, P.
We report on the identification of the gamma-ray source 0FGL J20001.0+4352 listed in the Fermi bright source catalogue. This object, which has an observed 1-100 GeV flux of (7.8 +/- 1.2) x 10^{-9} ph...
The nature of the ASCA/INTEGRAL source AX J183039-1002: a new Compton-thick AGN? (2009)
Bassani, L., Landi, R., Campana, R., McBride, V. A., Dean, A. J., Bird, A. J., ...
We report on the identification of the X/soft gamma-ray source AX J183039-1002 detected with ASCA and INTEGRAL/IBIS. The source, which has an observed 20-100 keV flux of about 8.6 x 10^-11...
Masetti, N., Parisi, P., Palazzi, E., Jimenez-Bailon, E., Morelli, L., Chavushyan, V., ...
Within the framework of our program of assessment of the nature of unidentified or poorly known INTEGRAL sources, we present here spectroscopy of optical objects, selected through positional...
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...
Hard X-ray observations of PSR J1833-1034 and its associated pulsar wind nebula (2008)
De Rosa, A., Ubertini, P., Campana, R., Bazzano, A., Dean, A. J., Bassani, L.
PSR J1833-1034 and its associated Pulsar Wind Nebula (PWN) has been investigated in depth through X-ray observations ranging from 0.1 to 200 keV. The low energy X-ray data from Chandra reveal a...
The INTEGRAL long monitoring of persistent Ultra Compact X-ray Bursters (2008)
Fiocchi, M., Bazzano, A., Ubertini, P., Bird, A. J., Natalucci, L., Sguera, V.
The combination of compact objects, short period variability and peculiar chemical composition of the Ultra Compact X-ray Binaries make up a very interesting laboratory to study accretion processes...
Capitanio, F., Giroletti, M., Molina, M., Bazzano, A., Tarana, A., Kennea, J., ...
IGR J17091-3624 and IGR J17098-3628 are two X-ray transients discovered by INTEGRAL and classified as possible black hole candidates (BHCs). We present here the results obtained from the analysis of...
Vercellone, S., Chen, A. W., Vittorini, V., Giuliani, A., D'Ammando, F., Tavani, M., ...
[Abridged] We report on a multiwavelength observation of the blazar 3C 454.3 (which we dubbed "crazy diamond") carried out on November 2007 by means of the astrophysical satellites AGILE, INTEGRAL,...
Spectral variability of GX 339-4 in a hard-to-soft state transition (2008)
Del Santo, M., Malzac, J., Jourdain, E., Belloni, T., Ubertini, P.
We report on INTEGRAL observations of the bright black-hole transient GX 339-4 performed during the period August-September 2004. Our data cover three different spectral states, namely...
Bulk Compton motion in the luminous quasar 4C04.42? (2008)
De Rosa, A., Bassani, L., Ubertini, P., Malizia, A., Dean, A. J.
We present the broadband analysis of the powerful quasar 4C04.42 (z=0.965) observed by XMM and INTEGRAL. The 0.2--200 keV spectrum is well reproduced with a hard power-law component...
Sguera, V., Bassani, L., Landi, R., Bazzano, A., Bird, A. J., Dean, A. J., ...
Context: IGR J16479-4514 is a fast X-ray transient known to display flares lasting typically a few hours. Recently, its counterpart has been identified with a supergiant star, therefore the source...
Sub-luminous X-ray Bursters Unveiled with INTEGRAL (2008)
Del Santo, M., Sidoli, L., Romano, P., Bazzano, A., Tarana, A., Ubertini, P., ...
In 2005 March 22nd, the INTEGRAL satellite caught a type-I X-ray burst from the unidentified source XMMU J174716.1-281048, serendipitously discovered with XMM-Newton in 2003. Based on the type-I...
The broad-band XMM-Newton and INTEGRAL spectra of bright type 1 Seyfert galaxies (2008)
Panessa, F., Bassani, L., De Rosa, A., Bird, A. J., Dean, A. J., Fiocchi, M., ...
The 0.5-150 keV broad-band spectra of a sample of nine bright type 1 Seyfert galaxies are analyzed here. These sources have been discovered/detected by INTEGRAL and subsequently observed with...
Masetti, N., Mason, E., Morelli, L., Cellone, S. A., McBride, V. A., Palazzi, E., ...
Using 8 telescopes in the northern and southern hemispheres, plus archival data from two on-line sky surveys, we performed a systematic optical spectroscopic study of 39 putative counterparts of...
Energetic X-ray Imaging Survey Telescope (EXIST) (2008)
J. E. Grindlay, T. A. Prince, N. Gehrels, J. Tueller, C. J. Hailey, B. D. Ramsey, ...
We have begun to study a mission to carry out the rst high sensitivity imaging survey of the entire sky at hard x-ray energies (5-600 keV). The Energetic X-ray Imaging Survey Telescope (EXIST) would...
INTEGRAL high energy sky: The keV to MeV cosmic sources (2008)
Ubertini, P., De Rosa, A., Bazzano, A., Bassani, L., Sguera, V.
After almost 5 years of operation, ESA's International Gamma-Ray Astrophysics Laboratory (INTEGRAL) Space Observatory has unveiled a new soft Gamma ray sky and produced a remarkable harvest of...
An X-ray view of absorbed INTEGRAL AGN (2008)
De Rosa, A., Bassani, L., Ubertini, P., Panessa, F., Malizia, A., Dean, A. J., ...
Aims. We present a 0.2--200 keV broad-band study of absorbed AGN observed with INTEGRAL, XMM-Newton, Chandra and ASCA to investigate the continuum shape and the absorbing/reflecting medium...
High-redshift blazar identification for Swift J1656.3-3302 (2008)
Masetti, N., Mason, E., Landi, R., Giommi, P., Bassani, L., Malizia, A., ...
We report on the high-redshift blazar identification of a new gamma-ray source, Swift J1656.3-3302, detected with the BAT imager onboard the Swift satellite and the IBIS instrument on the INTEGRAL...
Natalucci, L., Feroci, M., Quadrini, E., Ubertini, P., Piro, L., Herder, J. W. Den, ...
The success of the SWIFT/BAT and INTEGRAL missions has definitely opened a new window for follow-up and deep study of the transient gamma-ray sky. This now appears as the access key to important...
Energetic X-ray Imaging Survey Telescope (EXIST) (2007)
J. E. Grindlay, T. A. Prince, N. Gehrels, J. Tueller, C. J. Hailey, B. D. Ramsey, ...
We have begun to study a mission to carry out the rst high sensitivity imaging survey of the entire sky at hard x-ray energies (5-600 keV). The Energetic X-ray Imaging Survey Telescope (EXIST) would...
INTEGRAL observations of PSR J1811-1925 and its associated Pulsar Wind Nebula (2007)
Dean, A. J., De Rosa, A., McBride, V. A., Landi, R., Hill, A. B., Bassani, L., ...
We present spectral measurements made in the soft (20-100 keV) gamma-ray band of the region containing the composite supernova remnant G11.2-0.3 and its associated pulsar PSR J1811-1925. Analysis of...
Monitoring of Transient Black Hole Candidates observed in the INTEGRAL survey (2007)
Capitanio, F., Bazzano, A., Bird, A. J., Ubertini, P., Federici, M.
The INTEGRAL/IBIS survey was performed collecting all the GPS and GCDE data together with all the available public data . The second catalogue, published in 2006 by Bird et al., is dominated by...
Long term monitoring of the BHC 1E 1740.7-2942 (2007)
Del Santo, M., Bazzano, A., Bezayiff, N., Smith, D. M., Ubertini, P., De Cesare, G., ...
The microquasar 1E 1740.7-2942 is one of the most appealing source of the Galactic Centre region. The high energy feature detected once by SIGMA has been searched in the last years by INTEGRAL, but...
IGR J22517+2218=MG3 J225155+2217: a new gamma-ray lighthouse in the distant Universe (2007)
Bassani, L., Landi, R., Malizia, A., Fiocchi, M. T., Bazzano, A., Bird, A. J., ...
We report on the identification of a new soft gamma ray source, namely IGR J22517+2218, detected with IBIS/INTEGRAL. The source, which has an observed 20-100 keV flux of ~4 x10^-11 erg cm-2 s-1, is...
HESS J1616-508: likely powered by PSR J1617-5055 (2007)
Landi, R., De Rosa, A., Dean, A. J., Bassani, L., Ubertini, P., Bird, A. J.
HESS J1616-508 is one of the brightest emitters in the TeV sky. Recent observations with the IBIS/ISGRI telescope on board the INTEGRAL spacecraft have revealed that a young, nearby and energetic...
Landi, R., Masetti, N., Morelli, L., Palazzi, E., Bassani, L., Malizia, A., ...
The Swift Burst Alert Telescope (BAT) is performing a high Galactic latitude survey in the 14-195 keV band at a flux limit of ~10^{-11} erg cm^{-2} s^{-1}, leading to the discovery of new high energy...
Churazov, E., Sunyaev, R., Revnivtsev, M., Sazonov, S., Molkov, S., Grebenev, S., ...
We study the spectrum of the cosmic X-ray background (CXB) in energy range $\sim$5-100 keV. Early in 2006 the INTEGRAL observatory performed a series of four 30ksec observations with the Earth disk...
Churazov, E., Sunyaev, R., Revnivtsev, M., Sazonov, S., Molkov, S., Grebenev, S., ...
We study the spectrum of the cosmic X-ray background (CXB) in energy range $\sim$5-100 keV. Early in 2006 the INTEGRAL observatory performed a series of four 30ksec observations with the Earth disk...
Churazov, E., Sunyaev, R., Revnivtsev, M., Sazonov, S., Molkov, S., Grebenev, S., ...
We study the spectrum of the cosmic X-ray background (CXB) in energy range $\sim$5-100 keV. Early in 2006 the INTEGRAL observatory performed a series of four 30ksec observations with the Earth disk...
INTEGRAL high energy monitoring of the X-ray burster KS 1741-293 (2007)
De Cesare, G., Bazzano, A., Nunez, S. Martinez, Stratta, G., Tarana, A., De Santo, M., ...
KS 1741-293, discovered in 1989 by the X-ray camera TTM in the Kvant module of the Mir space station and identified as an X-ray burster, has not been detected in the hard X band until the advent of...
The 3rd IBIS/ISGRI soft gamma-ray survey catalog (2007)
Bird, A. J., Malizia, A., Bazzano, A., Barlow, E. J., Bassani, L., Hill, A. B., ...
In this paper we report on the third soft gamma-ray source catalog obtained with the IBIS/ISGRI gamma-ray imager on board the INTEGRAL satellite. The scientific dataset is based on more than 40 Ms of...
IGR J16194-2810: a new symbiotic X-ray binary (2007)
Masetti, N., Landi, R., Pretorius, M. L., Sguera, V., Bird, A. J., Perri, M., ...
We here report on the multiwavelength study which led us to the identification of X-ray source IGR J16194-2810 as a new Symbiotic X-ray Binary (SyXB), that is, a rare type of Low Mass X-ray Binary...
Bel, M. Cadolle, Ribo, M., Rodriguez, J., Chaty, S., Corbel, S., Goldwurm, A., ...
We report the results of simultaneous multiwavelength observations of the X-ray transient source SWIFT J1753.5-0127 performed with INTEGRAL, RXTE, NTT, REM and VLA on 2005 August 10-12. The source,...
INTEGRAL high energy detection of the transient IGR J11321-5311 (2007)
Sguera, V., Bazzano, A., Bird, A. J., Hill, A. B., Dean, A. J., Bassani, L., ...
Context: The transient hard X-ray source IGR J11321-5311 was discovered by INTEGRAL on June 2005, during observations of the Crux spiral arm. To date, this is the only detection of the source to be...
XMMU J174716.1-281048: a "quasi-persistent" very faint X-ray transient? (2007)
Del Santo, M., Sidoli, L., Mereghetti, S., Bazzano, A., Tarana, A., Ubertini, P.
The X-ray transient XMMU J174716.1-281048 was serendipitously discovered with XMM-Newton in 2003. It lies about 0.9 degrees off the Galactic Centre and its spectrum shows a high absorption (~8 x...
IGR J18483-0311: an accreting X-ray pulsar observed by INTEGRAL (2007)
Sguera, V., Hill, A. B., Bird, A. J., Dean, A. J., Bazzano, A., Ubertini, P., ...
IGR J18483-0311 is a poorly known transient hard X-ray source discovered by INTEGRAL during observations of the Galactic Center region performed between 23--28 April 2003. Aims: To detect new...
Churazov, E., Sunyaev, R., Revnivtsev, M., Sazonov, S., Molkov, S., Grebenev, S., ...
12 pages, 12 figures.-- arXiv:0608250 astro-ph pre-print supplied.-- Final full-text version of the paper available at: http://dx.doi.org/10.1051/0004-6361:20066230.
Bel, M. Cadolle, Ribo, M., Rodriguez, J., Chaty, S., Corbel, S., Goldwurm, A., ...
We report the results of simultaneous multiwavelength observations of the X-ray transient source SWIFT J1753.5-0127 performed with INTEGRAL, RXTE, NTT, REM and VLA on 2005 August 10-12. The source,...
The 3rd IBIS/ISGRI soft gamma-ray survey catalog (2006)
Bird, A. J., Malizia, A., Bazzano, A., Barlow, E. J., Bassani, L., Hill, A. B., ...
In this paper we report on the third soft gamma-ray source catalog obtained with the IBIS/ISGRI gamma-ray imager on board the INTEGRAL satellite. The scientific dataset is based on more than 40 Ms of...
New outbursts of the black hole candidate H1743-322/IGR J17464-3213 observed by INTEGRAL (2006)
Capitanio, F., Bazzano, A., Ubertini, P., Bird, A. J.
On March 2003, INTEGRAL/IBIS detected an outburst from a new source, IGR J17464-3213, that turned out to be a HEAO-1 transient, namely H1743-322. Its fux decayed below the RXTE PCA sensitivity limit...
Hunting the nature of IGR J17497-2821 with X-ray and NIR observations (2006)
Paizis, A., Nowak, M. A., Chaty, S., Rodriguez, J., Courvoisier, T. J. -L., Del Santo, M., ...
We report on a Chandra grating observation of the recently discovered hard X-ray transient IGR J17497-2821. The observation took place about two weeks after the source discovery at a flux level of...
Spectral variability modes of GX 339-4 in a hard-to-soft state transition (2006)
Del Santo, M., Malzac, J., Ubertini, P., Belloni, T.
We report on INTEGRAL observations performed during the 2004 outburst of the bright black hole transient GX 339-4. We analysed IBIS and JEM-X public data starting on 9th August and lasting about one...
Soft X and Gamma ray emission from TeV sources observed with Swift and INTEGRAL (2006)
De Rosa, A., Ubertini, P., Bazzano, A., Bassani, L., Landi, R., Malizia, A., ...
The soft X-ray and soft gamma observations of the new discovered TeV sources by HESS and MAGIC are crucial to discriminate between various emitting scenarios and to fully understand their nature. The...
Sguera, V., Bird, A. J., Dean, A. J., Bazzano, A., Ubertini, P., Landi, R., ...
Context: AXJ1845.0-0433 was discovered by ASCA in 1993 during fast outburst activity characterized by several flares on short timescales. Up to now, the source was not detected again by any X-ray...
A Possible Magnetar Nature for IGR J16358-4726 (2006)
Patel, S. K., Zurita, J., Del Santo, M., Finger, M., Kouveliotou, C., Eichler, D., ...
We present detailed spectral and timing analysis of the hard x-ray transient IGR J16358-4726 using multi-satellite archival observations. A study of the source flux time history over 6 years,...
A Hard X-ray View on Scorpius X-1 with INTEGRAL: non-Thermal Emission ? (2006)
Di Salvo, T., Goldoni, P., Stella, L., Bazzano, A., Burderi, L., ...
We present here simultaneous INTEGRAL/RXTE observations of Sco X-1, and in particular a study of the hard X-ray emission of the source and its correlation with the position in the Z-track of the...
SWIFT/XRT follow-up observations of INTEGRAL AGNs (2006)
Landi, R., Malizia, A., Bassani, L., Masetti, N., Stephen, J. B., Gianotti, F., ...
In five years of operation, data from INTEGRAL has been used to discover a large number of gamma-ray sources, a substantial fraction of which have turned out to be active galactic nuclei (AGN)....
Spectral analysis of the Low-Mass X-ray Binary 4U~1705--44 (2006)
Fiocchi, M., Bazzano, A., Ubertini, P., Federici, M.
\integral and \sax observations of the neutron-star LMXB 4U~1705--44 have been analysed to deeply investigate the spectral state transitions nature. Its energy spectrum can be described as the sum of...
Hard tail detection in the LMXB 4U1636-53 from INTEGRAL (2006)
Fiocchi, M., Bazzano, A., Ubertini, P., Federici, M.
Recent INTEGRAL observations and archival BeppoSAX data have been analyzed to deeply investigate the hard X-ray behavior of the neutron star, atoll type, low mass X-ray Binary 4U1636-53. Our...
Masetti, N., Morelli, L., Palazzi, E., Galaz, G., Bassani, L., Bazzano, A., ...
Optical spectroscopic identification of the nature of 21 unidentified southern hard X-ray objects is reported here in the framework of our campaign aimed at determining the nature of newly-discovered...
A Hard X-ray View on Scorpius X-1 with INTEGRAL: non-Thermal Emission ? (2006)
Di Salvo, T., Goldoni, P., Stella, L., Bazzano, A., Burderi, L., ...
We present here simultaneous INTEGRAL/RXTE observations of Sco X-1, and in particular a study of the hard X-ray emission of the source and its correlation with the position in the Z-track of the...
Churazov, E., Sunyaev, R., Revnivtsev, M., Sazonov, S., Molkov, S., Grebenev, S., ...
We study the spectrum of the cosmic X-ray background (CXB) in energy range $\sim$5-100 keV. Early in 2006 the INTEGRAL observatory performed a series of four 30ksec observations with the Earth disk...
Integral/Ibis Census of the Sky Beyond 100 kev (2006)
Bazzano, A., Stephen, J. B., Fiocchi, M., Bird, A. J., Bassani, L., Dean, A. J., ...
We report on the first census of INTEGRAL/IBIS detections ($\gtrsim 4\sigma$ significance) above 100 keV based on the Core Program and public Open time observations up to April 2005. There are 49...
Unveiling supergiant fast x-ray transient sources with INTEGRAL (2006)
Sguera, V., Bazzano, A., Bird, A.J., Dean, A.J., Ubertini, P., Barlow, E.J., ...
Supergiant high-mass X-ray binaries (SGXBs) are believed to be rare objects, as stars in the supergiant phase have a very short lifetime and to date only about a dozen of them have been discovered....
First broad band study of the mysterious source 1E 1743.1-2843 (2006)
Del Santo, M., Sidoli, L., Bazzano, A., Cocchi, M., De Cesare, G., Paizis, A., ...
In the last years, the persistent source 1E 1743.1-2843 has been observed in the X-rays, but never above 20 keV. In previous works, it was stressed that a possible high energy emission could give...
Swift/XRT follow-up observations of TeV sources of the HESS Inner Galaxy survey (2006)
Landi, R., Bassani, L., Malizia, A., Masetti, N., Stephen, J. B., Bazzano, A., ...
In order to provide a firm identification of the newly discovered Galactic TeV sources, a search for counterparts in a broad band from soft X-ray to soft gamma-rays is crucial as data in these...
Masetti, N., Bassani, L., Bazzano, A., Bird, A. J., Dean, A. J., Malizia, A., ...
We present further results from our ongoing optical spectrophotometric campaign at the Astronomical Observatory of Bologna in Loiano (Italy) on unidentified hard X-ray sources detected by INTEGRAL....
Unveiling supergiant fast X-ray transient sources with INTEGRAL (2006)
Sguera, V., Bazzano, A., Bird, A. J., Dean, A. J., Ubertini, P., Barlow, E. J., ...
Supergiant high mass X-ray binaries (SGXBs) are believed to be rare objects, as stars in the supergiant phase have a very short lifetime and to date only about a dozen of them have been discovered....
IGR J16393-4643: a new heavily-obscured X-ray pulsar (2006)
Bodaghee, A., Walter, R., Zurita Heras, J.A., Bird, A.J., Courvoisier, T.J.-L., Malizia, A., ...
An analysis of the high-energy emission from IGR J16393-4643 (=AX J1639.0-4642) is presented using data from INTEGRAL and XMM-Newton. The source is persistent in the 20-40 keV band at an average flux...
Spectral states of the X-ray binary IGR J17091--3624 observed by INTEGRAL and RXTE (2006)
Capitanio, F., Bazzano, A., Ubertini, P., Zdziarski, A. A., Bird, A. J., De Cesare, G., ...
IGR J17091-3624 was discovered in 2003 April by INTEGRAL/IBIS during its Galactic Centre Deep Exposure programme. The source was initially detectable only in the 40--100 keV range, but after two days...
The Second IBIS/ISGRI Soft Gamma-Ray Survey Catalog (2006)
Dean, A.J., Bird, A.J., Barlow, E.J., Bassani, L., Bazzano, A., Belanger, G., ...
In this paper we report the second soft gamma-ray source catalog obtained with the IBIS/ISGRI gamma-ray imager on board the INTEGRAL satellite. The scientific data set is based on more than 10 Ms of...
The second IBIS/ISGRI soft gamma-ray survey catalog (2006)
Bird, A.J., Barlow, E.J., Bassani, L., Bazzano, A., Belanger, G., Bodaghee, A., ...
In this paper we report the second soft gamma-ray source catalog obtained with the IBIS/ISGRI gamma-ray imager on board the INTEGRAL satellite. The scientific data set is based on more than 10 Ms of...
IGR J16393-4643: a new heavily-obscured X-ray pulsar (2006)
Bodaghee, A., Walter, R., Zurita Heras, J.A., Bird, A.J., Courvoisier, T.J.-L., Malizia, A., ...
An analysis of the high-energy emission from IGR J16393-4643 (=AX J1639.0-4642) is presented using data from INTEGRAL and XMM-Newton. The source is persistent in the 20-40 keV band at an average flux...
IGR J16393-4643: a new heavily-obscured X-ray pulsar (2006)
Bodaghee, A., Walter, R., Zurita Heras, J.A., Bird, A.J., Courvoisier, T.J.-L., Malizia, A., ...
An analysis of the high-energy emission from IGR J16393-4643 (=AX J1639.0-4642) is presented using data from INTEGRAL and XMM-Newton. The source is persistent in the 20-40 keV band at an average flux...
A Hard X-ray View on Scorpius X-1 with INTEGRAL: non-Thermal Emission ? (2006)
Di Salvo, T., Goldoni, P., Stella, L., Bazzano, A., Burderi, L., ...
We present here simultaneous INTEGRAL/RXTE observations of Sco X-1, and in particular a study of the hard X-ray emission of the source and its correlation with the position in the Z-track of the...
MAX: Development of a Laue diffraction lens for nuclear astrophysics (2006)
Barriere, N., Von Ballmoos, P., Skinner, G., Smither, B., Bastie, P., Hinglais, E., ...
The next generation of instrumentation for nuclear astrophysics will have to achieve an improvement in sensitivity by a factor of 10100 over present technologies. With the focusing gamma-ray...
The INTEGRAL mission - an overview (2006)
Kretschmar, P., Winkler, C., Courvoisier, T.J.-L., Di Cocco, G., Diehl, R., Gehrels, N., ...
The INTEGRAL mission - an overview (2006)
Kretschmar, P., Winkler, C., Courvoisier, T.J.-L., Di Cocco, G., Diehl, R., Gehrels, N., ...
A Hard X-Ray View of Scorpius X-1 with INTEGRAL: Nonthermal Emission? (2006)
Salvo, T. Di, Goldoni, P., Stella, L., Klis, M. Van Der, Bazzano, A., Burderi, L., ...
We present here simultaneous INTEGRAL/RXTE observations of Sco X-1 and in particular a study of the hard X-ray emission of the source and its correlation with the position in the Z track of the X-ray...
A Hard X-Ray View of Scorpius X-1 with INTEGRAL: Nonthermal Emission? (2006)
Salvo, T. Di, Goldoni, P., Stella, L., Klis, M. Van Der, Bazzano, A., Burderi, L., ...
We present here simultaneous INTEGRAL/RXTE observations of Sco X-1 and in particular a study of the hard X-ray emission of the source and its correlation with the position in the Z track of the X-ray...
MAX: Development of a Laue diffraction lens for nuclear astrophysics (2006)
Barriere, N., Von Ballmoos, P., Skinner, G., Smither, B., Bastie, P., Hinglais, E., ...
The next generation of instrumentation for nuclear astrophysics will have to achieve an improvement in sensitivity by a factor of 10100 over present technologies. With the focusing gamma-ray...
MAX: Development of a Laue diffraction lens for nuclear astrophysics (2006)
Barriere, N., Von Ballmoos, P., Skinner, G., Smither, B., Bastie, P., Hinglais, E., ...
The next generation of instrumentation for nuclear astrophysics will have to achieve an improvement in sensitivity by a factor of 10100 over present technologies. With the focusing gamma-ray...
Masetti, N., Pretorius, M. L., Palazzi, E., Bassani, L., Bazzano, A., Bird, A. J., ...
Context. The detection, thanks to the INTEGRAL satellite, of a number of new hard X-ray sources calls for the identification of their nature by means of observations at longer wavelengths. Aims. In...
INTEGRAL/IBIS Extragalactic survey: 20-100 keV selected AGN (2005)
Bassani, L., Molina, M., Malizia, A., Stephen, J. B., Bird, A. J., Bazzano, A., ...
Analysis of INTEGRAL Core Program and public Open Time observations performed up to April 2005 provides a sample of 62 active galactic nuclei in the 20-100 keV band above a flux limit of ~1.5x10^-11...
INTEGRAL observation of the X-ray burster KS 1741-293 (2005)
De Cesare, G., Bazzano, A., Stratta, G., Del Santo, M., Tarana, A., Ubertini, P.
KS 1741-293 was firstly detected in 1989 with the X-ray wide field camera TTM (3-10 keV) on board of the Rontgen-Kvant-Mir observatory. During these observations this source exhibited two X-ray...
INTEGRAL high energy behaviour of 4U 1812-12 (2005)
Tarana, A., Bazzano, A., Ubertini, P., Cocchi, M., Gotz, D., Capitanio, F., ...
The low mass X-ray binary system 4U 1812-12 was monitored with the INTEGRAL observatory in the period 2003-2004 and with BeppoSAX on April 20, 2000. We report here on the spectral and temporal...
X-ray and soft gamma-ray behaviour of the Galactic source 1E 1743.1-2843 (2005)
Del Santo, M., Sidoli, L., Bazzano, A., Cocchi, M., De Cesare, G., Paizis, A., ...
The X-ray persistent source 1E 1743.1-2843, located in the Galactic Centre region, has been detected by all X-ray telescope above 2 keV, whereas it is not visible in the soft X-rays (i. e. Rosat)...
Masetti, N., Mason, E., Bassani, L., Bird, A. J., Maiorano, E., Malizia, A., ...
We present the results of our optical spectrophotometric campaign ongoing at the Astronomical Observatory of Bologna in Loiano (Italy) on hard X-ray sources detected by INTEGRAL. We observed...
Bassani, L., De Rosa, A., Bazzano, A., Bird, A. J., Dean, A. J., Gehrels, N., ...
We report on the identification of a soft gamma-ray source, IGR J17204-3554, detected with the IBIS imager on board the INTEGRAL satellite. The source has a 20-100 keV flux of ~3x10^-11 erg cm^-2...
IGR J16393-4643: a new heavily-obscured X-ray pulsar (2005)
Bodaghee, A., Walter, R., Heras, J. A. Zurita, Bird, A. J., Courvoisier, T. J. -L., Malizia, A., ...
An analysis of the high-energy emission from IGR J16393-4643 (=AX J1639.0-4642) is presented using data from INTEGRAL and XMM-Newton. The source is persistent in the 20-40 keV band at an average flux...
Bel, M. Cadolle, Rodriguez, J., Sizun, P., Farinelli, R., Del Santo, M., Goldwurm, A., ...
We report the results of extensive high-energy observations of the X-ray transient and black hole candidate XTE J1720-318 performed with INTEGRAL, XMM-Newton and RXTE. The source, which underwent an...
Detection of hard X-ray emission from the Galactic nuclear region with INTEGRAL (2005)
Belanger, G., Goldwurm, A., Goldoni, P., Paul, J., Terrier, R., Falanga, M., ...
This letter presents the first results of an observational campaign to study the Galactic Centre with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture instrument in the...
Using the ROSAT Catalogues to find counterparts for the second IBIS/ISGRI Survey Sources (2005)
Stephen, J. B., Bassani, L., Malizia, A., Bazzano, A., Ubertini, P., Bird, A. J., ...
The second IBIS/ISGRI survey has produced a catalogue containing 209 hard X-ray sources visible down to a flux limit of around 1 milliCrab. The point source location accuracy of typically 1-3...
INTEGRAL observations of recurrent fast X-ray transient sources (2005)
Sguera, V., Barlow, E. J., Bird, A. J., Clark, D. J., Dean, A. J., Hill, A. B., ...
Fast X-ray Transients (FXTs) are believed to be non-recurrent bright X-ray sources lasting less than a day and occuring at serendipitous positions, they can best detected and discovered by...
Gotz, D., Mereghetti, S., Molkov, S., Hurley, K., Mirabel, I. F., Sunyaev, R., ...
SGR 1806-20 has been observed for more than 2 years with the INTEGRAL satellite. In this period the source went from a quiescent state into a very active one culminating in a giant flare on December...
Dean, A. J., Bazzano, A., Hill, A. B., Stephen, J. B., Bassani, L., Barlow, E. J., ...
INTEGRAL is the first gamma-ray astronomy mission with a sufficient sensitivity and angular resolution combination appropriate to the detection and identification of considerable numbers of gamma-ray...
Chandra and RXTE spectroscopy of the accreting msec pulsar IGR J00291+5934 (2005)
Paizis, A., Nowak, M. A., Wilms, J., Courvoisier, T. J. -L., Ebisawa, K., Rodriguez, J., ...
We report on an observation of the recently discovered accreting millisecond X-ray pulsar IGR J00291+5934 performed with the RXTE-Proportional Counter Array (PCA) and Chandra-High Energy Transmission...
The INTEGRAL/IBIS source AXJ1838.0-0655: a soft X-ray to TeV gamma-ray broad band emitter (2005)
Malizia, A., Bassani, L., Stephen, J. B., Bazzano, A., Ubertini, P., Bird, A. J., ...
We report on INTEGRAL observations of AX J1838.0-0655, one of the unidentified objects listed in the first IBIS/ISGRI survey catalogue and located in the Scutum arm region. This object, detected in...
Joinet, A., Jourdain, E., Malzac, J., Roques, J. P., Schoenfelder, V., Ubertini, P., ...
IGR J17464-3213, already known as the HEAO-1 transient source H1743-322, has been detected during a state transition by the SPI/INTEGRAL telescope. We describe the spectral evolution and flaring...
INTEGRAL IGR J18135-1751=HESS J1813-178: A new cosmic high energy accelerator from keV to TeV (2005)
Ubertini, P., Bassani, L., Malizia, A., Bazzano, A., Bird, A. J., Dean, A. J., ...
We report the discovery of a soft gamma ray source, namely IGR J18135-1751, detected with the IBIS imager on board the INTEGRAL satellite. The source is persistent and has a 20-100 keV luminosity of...
Hill, A. B., Walter, R., Knigge, C., Bazzano, A., Belanger, G., Bird, A. J., ...
We report the association of the INTEGRAL source IGR J18027-2016 with the BeppoSAX source SAX J1802.7-2017. IGR J18027-2016 is seen to be a weak, persistent source by the IBIS/ISGRI instrument on...
The INTEGRAL View of the Galactic Nucleus (2005)
Goldwurm, A., Belanger, G., Goldoni, P., Paul, J., Terrier, R., Falanga, M., ...
We present the preliminary results of the observational campaign performed in 2003 to study the Galactic Nucleus with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture...
Using the ROSAT Bright Source Catalogue to find Counterparts for IBIS/ISGRI Survey Sources (2005)
Stephen, J. B., Bassani, L., Molina, M., Malizia, A., Bazzano, A., Ubertini, P., ...
The IBIS/ISGRI first year galactic plane survey has produced a catalogue containing 123 hard X-ray sources visible down to a flux limit of a few milliCrabs. The point source location accuracy of...
Shaw, S. E., Mowlavi, N., Rodriguez, J., Ubertini, P., Capitanio, F., Ebisawa, K., ...
We report the discovery of a high-energy transient with the IBIS/ISGRI detector on board the INTEGRAL observatory. The source, namely IGR J00291+5934, was first detected on 2nd December 2004 in the...
INTEGRAL/IBIS search for e-e+ annihilation radiation from the Galactic Center Region (2005)
De Cesare, G., Bazzano, A., Capitanio, F., Del Santo, M., Lonjou, V., Natalucci, L., ...
Electron-positron annihilation radiation from the Galactic Center region has been detected since the seventies, but its astrophysical origin is still a topic of a scientific debate. We have analyzed...
INTEGRAL observations of recurrent fast X-ray transient sources (2005)
Sguera, V., Barlow, E.J., Bird, A.J., Clark, D.J., Dean, A.J., Hill, A.B., ...
Fast X-ray Transients (FXTs) are believed to be non-recurrent bright X-ray sources lasting less than a day and occuring at serendipitous positions, they can best detected and discovered by...
3-200 keV spectral states and variability of the INTEGRAL black hole binary IGR J17464-3213 (2005)
Capitanio, F., Ubertini, P., Bazzano, A., Kretschmar, P., Zdziarski, A. A., Joinet, A., ...
State transition and flaring activity of IGR J17464-3213/H1743-322 with INTEGRAL SPI (2005)
Joinet, A., Jourdain, E., Malzac, J., Roques, J. P., Schönfelder, V., Ubertini, P., ...
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., ...
GRB 040403: a faint X-ray rich Gamma-ray Burst discovered by INTEGRAL (2004)
Mereghetti, S., Gotz, D., Andersen, M. I., Castro-Tirado, A., Frontera, F., Gorosabel, J., ...
GRB 040403 is one of the faintest gamma-ray bursts for which a rapid and accurate localization has been obtained. Here we report on the gamma-ray properties of this burst, based on observations with...
3-200 keV spectral states and variability of the INTEGRAL Black Hole binary IGR J17464-3213 (2004)
Capitanio, F., Ubertini, P., Bazzano, A., Kretschmar, P., Zdziarski, A. A., Joinet, A., ...
On March 2003, IBIS, the gamma-ray imager on board the INTEGRAL satellite, detected an outburst from a new source, IGR J17464-3213, that turned out to be a HEAO-1 transient, H1743-322. In this paper...
1E 1740.7-2942: temporal and spectral evolution from INTEGRAL and RXTE observations (2004)
Del Santo, M., Bazzano, A., Zdziarski, A. A., Smith, D. M., Bezayiff, N., Farinelli, R., ...
We present results of the monitoring of the black hole candidate 1E 1740.7-2942 with INTEGRAL, in combination with simultaneous observations by RXTE. We concentrate on broad-band spectra from...
Spectral states and transient behaviour of a sample of X-ray bursters observed by BeppoSax (2004)
Natalucci, L., Bazzano, A., Capitanio, F., Cocchi, M., Ubertini, P.
During observation campaigns of the Galactic Bulge region, BeppoSAX detected a total of 21 new X-ray bursters in about 6 years of operation. These sources are mostly transient and often feature a...
Bel, M. Cadolle, Rodriguez, J., Sizun, P., Farinelli, R., Del Santo, M., Goldwurm, A., ...
We report the results of extensive high-energy observations of the X-ray transient and black hole candidate XTE J1720-318 performed with INTEGRAL, XMM-Newton and RXTE. The source, which underwent an...
The INTEGRAL View of the Galactic Nucleus (2004)
Goldwurm, A., Belanger, G., Goldoni, P., Paul, J., Terrier, R., Falanga, M., ...
We present the preliminary results of the observational campaign performed in 2003 to study the Galactic Nucleus with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture...
INTEGRAL monitoring of the Black Hole candidate 1E 1740.7-2942 (2004)
Del Santo, M., Bazzano, A., Smith, D. M., Bassani, L., Bird, A. J., Bouchet, L., ...
The brightest persistent Galactic black hole candidate close to the Galactic Centre, 1E 1740.7-2942, has long been observed with INTEGRAL. In this paper, we report on the long-term hard X-ray...
The INTEGRAL view of the Soft Gamma-ray Repeater SGR 1806-20 (2004)
Gotz, D., Mereghetti, S., Mirabel, I. F., Hurley, K., Brandt, S., Lund, N., ...
We present the results obtained by INTEGRAL on the Soft-Gamma Ray Repeater SGR 1806-20. In particular we report on the temporal and spectral properties of the bursts detected during a moderately...
The first IBIS/ISGRI soft γ-ray galactic plane survey catalog (2004)
Bird, A.J., Barlow, E.J., Bassani, L., Bodaghee, A., Capitanio, F., Cocchi, M., ...
We report the first high-energy survey catalog obtained with the IBIS gamma-ray imager on board INTEGRAL. The analysis has been performed on the first-year Core Program ISGRI data comprising both...
From BeppoSAX to INTEGRAL: PDS observations of hard X-ray sources detected in the IBIS survey (2004)
Malizia, A., Bassani, L., Landi, R., Molina, M., Stephen, J. B., Gianotti, F., ...
The first IBIS galactic plane survey has provided a list of high energy emitting objects above 20 keV; these sources have been detected mostly in the crowded region of the Galactic Centre and partly...
Lebrun, F., Terrier, R., Bazzano, A., Belanger, G., Bird, A., Bouchet, L., ...
The Milky Way is known to be an abundant source of gamma-ray photons, now determined to be mainly diffuse in nature and resulting from interstellar processes. In the soft gamma-ray domain, point...
Compact sources as the origin of the soft gamma-ray emission of the Milky Way (2004)
Dean, A.J., Lebrun, F., Terrier, R., Bazzano, A., Belanger, G., Bird, A.J., ...
The Milky Way is known to be an abundant source of γ-ray photons, now determined to be mainly diffuse in nature and resulting from interstellar processes. In the soft γ-ray domain, point sources...
Chandra observations of the peculiar X-ray transient IGR J16358-4726 (2004)
Patel, S.K., Kouveliotou, C., Tennant, A., Woods, P.M., Finger, M., King, A., ...
Kretschmar, P., Mereghetti, S., Hermsen, W., Ubertini, P., Winkler, C., Brandt, S., ...
On Oct 9, 2004 Integral observed hard X-ray flares from a source located at R.A.=17h 40.7m, Dec.=-28s 08' (J2000, error radius 2.3'). This new hard X-ray source, IGRJ17407-2808, is positionally...
INTEGRAL Observations of SGR1806-20 (2004)
Hurley, K., Mazets, E., Golenetskii, S., Frederiks, D.D., Boer, M., ...
CXO observation of GRB 040812. (2004)
Patel, S., Kouveliotou, C., Mereghetti, S., Gotz, D., Lund, N., Chenevez, J., ...
GRB 040812: second /session define format EPOCH1 = CXO observations. (2004)
Patel, S., Kouveliotou, C., Mereghetti, S., Gotz, D., Lund, N., Chevenez, J., ...
The peculiar X-ray transient IGR J16358-4726 (2004)
Patel, S.K., Kouveliotou, C., Tennant, A., Wilson, C., Woods, P., Finger, M., ...
Bel, M. Cadolle, Rodriguez, J., Sizun, P., Farinelli, R., Del Santo, M., Goldwurm, A., ...
We report the results of extensive high-energy observations of the X-ray transient and black hole candidate XTE J1720-318 performed with INTEGRAL, XMM-Newton and RXTE. The source, which underwent an...
Detection of hard X-ray emission from the Galactic nuclear region with INTEGRAL (2004)
Belanger, G., Goldwurm, A., Goldoni, P., Paul, J., Terrier, R., Falanga, M., ...
This letter presents the first results of an observational campaign to study the Galactic Centre with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture instrument in the...
The INTEGRAL View of the Galactic Nucleus (2004)
Goldwurm, A., Belanger, G., Goldoni, P., Paul, J., Terrier, R., Falanga, M., ...
We present the preliminary results of the observational campaign performed in 2003 to study the Galactic Nucleus with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture...
The INTEGRAL View of the Galactic Nucleus (2004)
Goldwurm, A., Belanger, G., Goldoni, P., Paul, J., Terrier, R., Falanga, M., ...
We present the preliminary results of the observational campaign performed in 2003 to study the Galactic Nucleus with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture...
Bel, M. Cadolle, Rodriguez, J., Sizun, P., Farinelli, R., Del Santo, M., Goldwurm, A., ...
We report the results of extensive high-energy observations of the X-ray transient and black hole candidate XTE J1720-318 performed with INTEGRAL, XMM-Newton and RXTE. The source, which underwent an...
Detection of hard X-ray emission from the Galactic nuclear region with INTEGRAL (2004)
Belanger, G., Goldwurm, A., Goldoni, P., Paul, J., Terrier, R., Falanga, M., ...
This letter presents the first results of an observational campaign to study the Galactic Centre with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture instrument in the...
The INTEGRAL view of the soft gamma-ray repeater SGR 1806-20 (2004)
Götz, D., Mereghetti, S., Mirabel, I. F., Hurley, K., Brandt, S., Lund, N., ...
Compact sources as the origin of the soft bold gamma-ray emission of the Milky Way (2004)
Lebrun, F., Terrier, R., Bazzano, A., Bélanger, G., Bird, A., Bouchet, L., ...
The Peculiar X-Ray Transient IGR J16358-4726 (2004)
Patel, S.K., Kouveliotou, C., Tennant, A., Woods, P.M., King, A., Finger, M.H., ...
Werner, N., Natalucci, L., Markwardt, C. B., Cornelisse, R., Bazzano, A., ...
SAX J1747.0-2853 is an X-ray transient which exhibited X-ray outbursts yearly between 1998 and 2001, and most probably also in 1976. The outburst of 2000 was the longest and brightest. We have...
Two spectral states of the transient X-ray burster SAX J1747.0-2853 (2003)
Natalucci, L., Bazzano, A., Cocchi, M., Ubertini, P., Cornelisse, R., Heise, J., ...
The neutron star binary SAX J1747.0-2853, located in the Galactic Center region at about 0.5 deg from Sgr A* and at a distance of 9 kpc, has been observed in outburst four times (1998, 1999, 2000 and...
Detection of hard X-ray emission from the Galactic nuclear region with INTEGRAL (2003)
Belanger, G., Goldwurm, A., Goldoni, P., Paul, J., Terrier, R., Falanga, M., ...
This letter presents the first results of an observational campaign to study the Galactic Centre with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture instrument in the...
In flight calibration of the ISGRI camera (2003)
Terrier, Régis, Lebrun, F., Bazzano, A., Belanger, G., Bird, A.J., Blondel, C., ...
ISGRI, the IBIS low energy camera (15 keV - 1 MeV) on board INTEGRAL, is the first large CdTe gamma-ray imager in orbit. We present here an overview of the ISGRI in-flight calibrations performed...
In flight calibration of the ISGRI camera (2003)
Terrier, Régis, Lebrun, F., Bazzano, A., Belanger, G., Bird, A.J., Blondel, C., ...
ISGRI, the IBIS low energy camera (15 keV - 1 MeV) on board INTEGRAL, is the first large CdTe gamma-ray imager in orbit. We present here an overview of the ISGRI in-flight calibrations performed...
In flight calibration of the ISGRI camera (2003)
Terrier, Regis, Lebrun, F., Bazzano, A., Belanger, G., Bird, A. J., Blondel, C., ...
ISGRI, the IBIS low energy camera (15 keV - 1 MeV) on board INTEGRAL, is the first large CdTe gamma-ray imager in orbit. We present here an overview of the ISGRI in-flight calibrations performed...
INTEGRAL discovery of a bright highly obscured galactic X-ray binary source IGR J16318-4848 (2003)
Walter, R., Rodriguez, J., Foschini, L., De Plaa, J., Corbel, S., Courvoisier, T. J. -L., ...
INTEGRAL regularly scans the Galactic plane to search for new objects and in particular for absorbed sources with the bulk of their emission above 10-20 keV. The first new INTEGRAL source was...
IBIS preliminary results on Cygnus X-1 spectral and temporal characteristics (2003)
Bazzano, A., Bird, A. J., Capitanio, F., Del Santo, M., Ubertini, P., Zdziarski, A. A., ...
We report preliminary results of a broadband spectral and temporal study of the black-hole binary Cyg X-1 performed with the IBIS telescope. Cyg X-1 was the first pointed celestial target of IBIS...
Early SPI/INTEGRAL measurements of galactic 511 keV line emission from positron annihilation (2003)
Jean, P., Knoedlseder, J., Lonjou, V., Allain, M., Skinner, G. K., ...
We report the first measurements of the 511 keV line emission from the Galactic Centre (GC) region performed with the spectrometer SPI on the space observatory INTEGRAL (International Gamma-Ray...
Natalucci, L., Bird, A. J., Bazzano, A., Ubertini, P., Stephen, J. B., Terrier, R., ...
The spatial distribution of the background events may affect the source detection capability of IBIS at high energies (> 200 keV) for both ISGRI and PICsIT layers. The observed background is found to...
First IBIS results on the high energy emission of Cyg X-2 (2003)
Natalucci, L., Del Santo, M., Ubertini, P., Capitanio, F., Cocchi, M., Piraino, S., ...
The bright low-mass X-ray binary Cyg X-2 was in the field of view of the IBIS telescope during the early Cygnus region observations, executed during the INTEGRAL Performance Verification Phase. The...
IBIS performances during the Galactic Plane Scan - I. The Cygnus region (2003)
Del Santo, M., Rodriguez, J., Ubertini, P., Bazzano, A., Bird, A. J., Capitanio, F., ...
The Plane of our Galaxy is regularly observed by the INTEGRAL satellite by means of scheduled scans. We present here results from the IBIS/ISGRI instrument using data from the first two Galactic...
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...
In-flight calibrations of IBIS/PICsIT (2003)
Malaguti, G., Bazzano, A., Bird, A. J., Di Cocco, G., Foschini, L., Laurent, P., ...
PICsIT (Pixellated Imaging CaeSium Iodide Telescope) is the high energy detector of the IBIS telescope on-board the INTEGRAL satellite. It consists of 4096 independent detection units, ~0.7 cm^2 in...
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...
Rodriguez, J., Del Santo, M., Lebrun, F., Belanger, G., Cadolle-Bel, M., Capitanio, F., ...
We report on INTEGRAL/IBIS observations of the Vela region during a Galactic Plane Scan (hereafter GPS) presenting the IBIS in-flight performances during these operations. Among all the known sources...
The Peculiar X-ray Transient IGR 16358-4726 (2003)
Patel, S. K., Kouveliotou, C., Tennant, A., Woods, P. M., King, A., Ubertini, P., ...
The new transient IGR 16358-4726 was discovered on 2003 March 19 with INTEGRAL. We detected the source serendipitously during our 2003 March 24 observation of SGR 1627-41 with the Chandra X-ray...
Observation of GRB 030131 with the INTEGRAL satellite (2003)
Gotz, D., Mereghetti, S., Hurley, K., Deluit, S., Feroci, M., Frontera, F., ...
A long Gamma-Ray Burst (GRB) was detected with the instruments on board the INTEGRAL satellite on January 31 2003. Although most of the GRB, which lasted $\sim$150 seconds, occurred during a...
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:...
Six years of BeppoSAX Wide Field Cameras observations of nine galactic type-I X-ray bursters (2003)
Cornelisse, R., Verbunt, F., Kuulkers, E., Heise, J., Hartog, P. R. Den, ...
We present an overview of BeppoSAX Wide Field Cameras observations of the nine most frequent type-I X-ray bursters in the Galactic center region. Six years of observations (from 1996 to 2002) have...
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...
Burst-properties as a function of mass accretion rate in GX 3+1 (2003)
Hartog, P. R. Den, Kuulkers, E., Cornelisse, R., Heisse, J., Bazzano, A., ...
GX 3+1 is a low-mass X-ray binary that is persistently bright since its discovery in 1964. It was found to be an X-ray burster twenty years ago proving that the compact object in this system is a...
Natalucci, L, Bird, AJ, Bazzano, A, Ubertini, P, Stephen, JB, Terrier, R, ...
The spatial distribution of the background events may affect the source detection capability of IBIS at high energies (>=200 keV) for both ISGRI and PICsIT layers. The observed background is found to...
The Peculiar X-ray Transient IGR J16358-4726 (2003)
Patel, S.K., Kouveliotou, C., Tennant, A., Wilson, C., Woods, P., Finger, M., ...
An INTEGRAL ToO Observation of SGR1806-20 (2003)
Hurley, K., Aptekar, R., Mazets, E., Golenetskii, S., Boer, M., ...
In flight calibration of the ISGRI camera (2003)
Terrier, Régis, Lebrun, F., Bazzano, A., Belanger, G., Bird, A.J., Blondel, C., ...
ISGRI, the IBIS low energy camera (15 keV - 1 MeV) on board INTEGRAL, is the first large CdTe gamma-ray imager in orbit. We present here an overview of the ISGRI in-flight calibrations performed...
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., ...
Early SPI/INTEGRAL measurements of 511 keV line emission from the 4th quadrant of the Galaxy (2003)
Jean, P., Knödlseder, J., Lonjou, V., Allain, M., Skinner, G. K., ...
GRB 021125 : The first GRB imaged by INTEGRAL (2003)
Malaguti, G., Bazzano, A., Beckmann, V, Bird, A. J., Del Santo, M., Di Cocco, G., ...
First results from the INTEGRAL galactic plane scans (2003)
Winkler, C., Gehrels, N., Schönfelder, V., Strong, A. W., Wunderer, C., ...
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., ...
In flight calibration of the ISGRI camera (2003)
Terrier, Régis, Lebrun, F., Bazzano, A., Belanger, G., Bird, A.J., Blondel, C., ...
ISGRI, the IBIS low energy camera (15 keV - 1 MeV) on board INTEGRAL, is the first large CdTe gamma-ray imager in orbit. We present here an overview of the ISGRI in-flight calibrations performed...
BeppoSAX Wide Field Cameras observations of six type I X-ray bursters (2002)
Cornelisse, R., Verbunt, F., Kuulkers, E., Heise, J., Remillard, R. A., ...
We have discovered three certain (SAX J1324.5-6313, 2S 1711-339 and SAX J1828.5-1037) and two likely (SAX J1818.7+1424 and SAX J2224.9+5421) new thermonuclear X-ray burst sources with the BeppoSAX...
The nature of the X-ray transient SAX J1711.6-3808 (2002)
Markwardt, C. B., Bazzano, A., Cocchi, M., Cornelisse, R., Heise, J., ...
SAX J1711.6-3808 is an X-ray transient in the Galactic bulge that was active from January through May of 2001 and whose maximum 1-200 keV luminosity was measured to be 5X10-9 erg/s/cm2 which is less...
Discovery of the neutron star nature of SLX 1737-282 (2002)
Verbunt, F., Kuulkers, E., Markwardt, C., Bazzano, A., Cocchi, M., ...
SLX 1737-282 is a persistent moderately bright X-ray source 1.2 deg from the Galactic center. X-ray observations with the Wide Field Cameras on BeppoSAX have for the first time revealed the true...
Astronomy Astrophysics Discovery of the neutron star nature of SLX 1737-282 (2002)
F. Verbunt, E. Kuulkers, C. B. Markwardt, A. Bazzano, M. Cocchi, R. Cornelisse, ...
Abstract. SLX 1737−282 is a persistent moderately bright X-ray source 1. ◦ 2 from the Galactic center. X-ray observations with the Wide Field Cameras on BeppoSAX have for the first time revealed...
A half-a-day long thermonuclear X-ray burst from KS 1731-260 (2001)
Kuulkers, E., Van Kerkwijk, M. H., Cornelisse, R., Smith, D. A., Heise, J., ...
We report on an approximately twelve hour long X-ray flare from the low-mass X-ray binary KS 1731-260. The flare has a rise time of less than 13 min and declines exponentially with a decay time of...
Discovery of the X-ray burster SAX J1752.3-3138 (2001)
Cocchi, M., Bazzano, A., Natalucci, L., Ubertini, P., Heise, J., Kuulkers, E., ...
During a 50 ks monitoring observation of the Galactic bulge performed in September 1999 by the Wide Field Cameras on board the BeppoSAX satellite, an X-ray burst was detected from a sky position ~3...
A Sample of Radius-Expansion Bursters Observed by the BeppoSAX-WFCs (2001)
Cocchi, Massimo, Bazzano, A., Natalucci, L., Ubertini, P., Heise, J., Kuulkers, E., ...
Since 1996 a monitoring campaign of the Galactic Bulge region has been performed by the BeppoSAX Wide Field Cameras in the 2-28 keV band. This allowed accurate and unbiased studies of classes of...
The first outburst of SAX J1808.4-3658 revisited (2001)
Cornelisse, R., Kuulkers, E., Heise, J., Kuiper, L., Bazzano, A., ...
Data of the 1996 outburst of the single-known accreting millisecond pulsar SAX J1808.4-3658, taken with the Wide Field Cameras (WFCs) on BeppoSAX, are revisited with more complete data coverage and...
Natalucci, L., Bazzano, A., Cocchi, M., Ubertini, P., Heise, J., Kuulkers, E., ...
We report on our discovery and follow-up observations of the X-ray source SAX J1747.0-2853 detected in outburst on 1998, March 10 with the BeppoSAX Wide Field Cameras in the energy range 2-28 keV....
Turmoil on the accretion disk of GRO J1655-40 (2000)
Kuulkers, E., Cornelisse, R., Heise, J., Kong, A. K. H., Charles, P. A., ...
During the 1996/1997 outburst of the X-ray transient GRO J1655-40 the Wide Field Cameras onboard BeppoSAX observed the system with nearly continuous coverage during some stages of this outburst. On...
"Clocked" Bursts From GS 1826-238 (2000)
Cocchi, M., Bazzano, A., Natalucci, L., Ubertini, P., Heise, J., ...
We report on the long term monitoring of the GINGA transient source GS 1826-238 performed with the BeppoSAX Wide Fiels Camera (WFC) instrument, during four different observing campaigns covering...
Bright X-ray bursts from 1E 1724-3045 in Terzan 2 (2000)
Cocchi, M., Bazzano, A., Natalucci, L., Ubertini, P., Heise, J., Kuulkers, E., ...
During about 3 years wide field monitoring of the Galactic Center region by the WFC telescopes on board the BeppoSAX satellite, a total of 14 type-I X-ray bursts were detected from the burster 1E...
Observations of Eddington-limited type-I X-ray bursts from 4U 1812-12 (2000)
Cocchi, M., Bazzano, A., Natalucci, L., Ubertini, P., Heise, J., Kuulkers, E., ...
During more than 3 years (August 1996-October 1999) monitoring of a 40x40 degree sky region around the Galactic Centre by the Wide Field Cameras on board BeppoSAX, a total of 8 type-I bursts have...
SAX J1810.8-2609: A New Hard X-ray Bursting Transient (2000)
Natalucci, L., Bazzano, A., Cocchi, M., Ubertini, P., Heise, J., Kuulkers, E., ...
The transient X-ray source SAX J1810.8-2609 was discovered on 1998, March 10 with the Wide Field Cameras on board the BeppoSAX satellite, while observing the Galactic Bulge in the 2-28 keV energy...
BeppoSAX observations of the nearby low-mass X-ray binary and fast transient SAX J1819.3-2525 (2000)
Kuulkers, E., Bazzano, A., Cornelisse, R., Cocchi, M., Heise, J., ...
SAX J1819.3-2525 is a nearby X-ray transient which exhibited a fast and large X-ray outburst on Sep. 15, 1999 (Smith et al. 1999). The Wide Field Cameras and the Narrow Field Instruments (NFI) on...
The orbital period of the recurrent X-ray transient in Terzan 6 (1999)
Bazzano, A., Cocchi, M, Cornelisse, R., Heise, J., Kuiper, L., ...
Four or five new outbursts were detected of the bright X-ray transient GRS 1747-312 in the globular cluster Terzan 6 between 1996 and 1999, through monitoring campaigns with the Wide Field Cameras...
A new bursting X-ray transient: SAX J1750.8-2900 (1999)
Natalucci, L., Cornelisse, R., Bazzano, A., Cocchi, M., Ubertini, P., Heise, J., ...
We have analysed in detail the discovery measurements of the X-ray burster SAX J1750.8-2900 by the Wide Field Cameras on board BeppoSAX in spring 1997, at a position ~1.2 degrees off the Galactic...
Broad-band X-ray measurements of GS 1826-238 (1999)
Heise, J., Kuulkers, E., Bazzano, A., Cocchi, M., Ubertini, P.
The broad band X-ray spectrum of the low-mass X-ray binary (LMXB) GS1826-238 was measured with the narrow-field instruments on BeppoSAX on April 6 and 7, 1997. The spectrum is consistent with the...
Discovery of type-I X-ray bursts from GRS 1741.9-2853 (1999)
Cocchi, M., Bazzano, A., Natalucci, L., Ubertini, P., Heise, J., Muller, J. M., ...
For the first time X-ray bursts have been detected from a sky position consistent with the one of GRS 1741.9-2853, a GRANAT transient source located only ~10' from the Galactic Centre. A total of 3...
A new X-ray outburst in the globular cluster NGC 6440: SAX J1748.9-2021 (1999)
Verbunt, F., Strohmayer, T. E., Bazzano, A., Cocchi, M., Heise, J., ...
For the second time in 27 years a bright transient X-ray source has been detected coincident with the globular cluster NGC 6440. It was found to be active in August, 1998, with the Wide Field Camera...
Bursts from GS 1826-238: a clocked thermonuclear flashes generator (1999)
Ubertini, P., Bazzano, A., Cocchi, M., Natalucci, L., Heise, J., Muller, J. M., ...
The transient X-ray source GS 1826-238 was monitored during five different observing periods between August 1996 and October 1998 with the BeppoSAX Wide Field Camera instrument in the framework of a...
SAX J1810.8-2609: an X-ray bursting transient (1999)
Cocchi, M., Bazzano, A., Natalucci, L., Ubertini, P., Heise, J., Muller, J. M., ...
We report on the BeppoSAX/WFC observation of a strong type-I X-ray burst from the recently discovered transient source SAX J1810.8-2609. The observed event showed evidence of photospheric radius...
Long term BeppoSAX-WFC monitoring of GRS 1758-258 (1999)
Cocchi, M., Smith, M. J. S., Muller, J. M., Bazzano, A., Natalucci, L., Ubertini, P., ...
Following a series of deep observations of the Galactic Bulge region performed with the Wide Field Cameras on board BeppoSAX, it has been possible to study throughout a long time period a number of...
The INTEGRAL Core Observing Programme (1999)
Winkler, C., Gehrels, N., Lund, N., Schoenfelder, V., Ubertini, P.
The Core Programme of the INTEGRAL mission is defined as the portion of the scientific programme covering the guaranteed time observations for the INTEGRAL Science Working Team. This paper describes...
X-ray bursts from 1RXS J170930.2-263927 = XTE J1709-267 (1998)
Cocchi, M., Bazzano, A., Natalucci, L., Ubertini, P., Heise, J., Muller, J. M., ...
We report evidence of type-I X-ray bursting activity from the transient 1RXS J170930.2-263927 when it was in outburst early 1997. This identifies the source as a probable low-mass X-ray binary...
Heise, J., Muller, J. M., Bazzano, A., Cocchi, M., Natalucci, L., ...
We report the discovery with BeppoSAX-WFC of two new X-ray sources that were only seen during bursts: SAX J1753.5-2349 and SAX J1806.5-2215. For both sources, no steady emission was detected above an...
Discovery of the X-ray transient SAX J1808.4-3658, a likely low mass X-ray binary (1998)
Heise, J., Muller, J. M., Bazzano, A., Cocchi, M., Natalucci, L., ...
We report the discovery of a fairly bright transient during observations with the Wide Field Cameras on board the BeppoSAX satellite in September 1996. It was detected at a peak intensity of 0.1 Crab...
Proposed (to) EXIST: Hard X-ray Imaging All Sky Survey/Monitor (1997)
Grindlay, J. E., Prince, T. A., Harrison, F., Gehrels, N., Hailey, C. J., Ramsey, B., ...
The hard x-ray (10-600 keV) sky is inherently time variable and yet has neither been surveyed nor monitored with a sensitive imaging telescope. The Energetic X-ray Imaging Survey Telescope (EXIST) is...
Detection of X-ray bursts in the globular cluster NGC 6652 (1997)
Verbunt, F., Heise, J., Muller, J. M., Bazzano, A., Cocchi, M., ...
Two type I X-ray bursts were detected from a position consistent with the transient X-ray source in NGC 6652 with the Wide Field Camera of the BeppoSAX satellite, strongly suggesting that this...