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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 quality observations performed during the…

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 high quality observations performed…

After more than 5.5 years of in flight lifetime, the ESA space observatory INTEGRAL is depicting a new scenario in the soft gamma Ray domain. With the observation and discovery of more than 400 hard X-Ray sources has changed our view of a…

Astrophysics · Physics 2019-08-14 Pietro Ubertini

The International Gamma-Ray Astrophysics Laboratory (INTEGRAL) continues to successfully work in orbit after its launch in 2002. The mission provides the deepest ever survey of hard X-ray sources throughout the Galaxy at energies above 20…

High Energy Astrophysical Phenomena · Physics 2017-07-26 Roman Krivonos , Sergey Tsygankov , Ilya Mereminskiy , Alexander Lutovinov , Sergey Sazonov , Rashid Sunyaev

The International Gamma-Ray Astrophysics Laboratory (INTEGRAL), launched in 2002, continues its successful work in observing the sky at energies E>20 keV. The legacy of the mission already includes a large number of discovered or previously…

High Energy Astrophysical Phenomena · Physics 2022-01-14 Roman Krivonos , Sergey Sazonov , Ekaterina Kuznetsova , Alexander Lutovinov , Ilya Mereminskiy , Sergey Tsygankov

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 results, ranging from identification of new…

Astrophysics · Physics 2009-06-23 P. Ubertini , A. De Rosa , A. Bazzano , L. Bassani , V. Sguera

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 of about 700 hard X-Ray sources, it has…

Cosmology and Nongalactic Astrophysics · Physics 2011-03-28 P. Ubertini , A. Corsi , S. Foley , S. McGlynn , G. De Cesare , A. Bazzano

This paper is the second in a series devoted to the hard X-ray (17-60 keV) whole sky survey performed by the INTEGRAL observatory over seven years. Here we present a catalog of detected sources which includes 521 objects, 449 of which…

High Energy Astrophysical Phenomena · Physics 2015-05-19 R. Krivonos , S. Tsygankov , M. Revnivtsev , S. Grebenev , E. Churazov , R. Sunyaev

Context. The INTEGRAL observatory operating in a hard X-ray/gamma domain has gathered a large observational data set over nine years starting in 2003. Most of the observing time was dedicated to the Galactic source population study, making…

Instrumentation and Methods for Astrophysics · Physics 2012-09-18 R. Krivonos , S. Tsygankov , A. Lutovinov , M. Revnivtsev , E. Churazov , R. Sunyaev

We describe the INTEGRAL reference catalog which classifies previously known bright X-ray and gamma-ray sources before the launch of INTEGRAL. These sources are, or have been at least once, brighter than ~1 mCrab above 3 keV, and are…

Astrophysics · Physics 2009-11-10 Ken Ebisawa , G. Bourban , A. Bodaghee , N. Mowlavi , T. J. -L. Courvoisier

During the period Aug.23-Sept.24 2003, the INTEGRAL observatory performed an ultra deep survey of the Galactic Center region with a record sensitivity at energies higher than 20 keV. We have analized images of the Galactic Center region…

The International Gamma-ray Astrophysics Laboratory (INTEGRAL) has been surveying the sky above 20 keV since its launch in 2002 providing new insights into the nature of the sources that populate our Universe at soft gamma-ray energies. The…

Despite not being specifically designed for the study of gamma-ray bursts (GRBs), the INTEGRAL satellite is giving a relevant contribution to this field with the detection of about 10 GRB per year in the IBIS field of view. The ground-based…

High Energy Astrophysical Phenomena · Physics 2011-02-21 Sandro Mereghetti

Since its launch on October 2002, the INTEGRAL satellite has revolutionized our knowledge of the hard X-ray sky thanks to its unprecedented imaging capabilities and source detection positional accuracy above 20 keV. Nevertheless, many of…

We present results of all sky survey, performed with data acquired by the IBIS telescope onboard the INTEGRAL observatory over eleven years of operation, at energies above 100 keV. A catalogue of detected sources includes 132 objects. The…

Instrumentation and Methods for Astrophysics · Physics 2015-06-23 Roman A. Krivonos , Sergey S. Tsygankov , Alexander A. Lutovinov , Mikhail G. Revnivtsev , Eugene M. Churazov , Rashid A. Sunyaev

We present results of an all-sky hard X-ray survey based on almost four years of observations with the IBIS telescope on board the INTEGRAL observatory. The dead time-corrected exposure of the survey is ~33 Ms. Approximately 12% and 80% of…

Astrophysics · Physics 2009-11-13 R. Krivonos , M. Revnivtsev , A. Lutovinov , S. Sazonov , E. Churazov , R. Sunyaev

Since its launch on October 2002, the INTEGRAL satellite has revolutionized our knowledge of the hard X-ray sky thanks to its unprecedented imaging capabilities and source detection positional accuracy above 20 keV. Nevertheless, many of…

The gamma-ray astronomical observatory INTEGRAL, succesfully launched on 17th October 2002, carries two large gamma-ray telescopes. One of them is the coded-mask imaging gamma-ray telescope onboard the INTEGRAL satellite (IBIS) which…

Astrophysics · Physics 2009-11-10 A. Goldwurm , P. David , L. Foschini , A. Gros , P. Laurent , A. Sauvageon , A. J. Bird , L. Lerusse , N. Produit

During the Core Programme, INTEGRAL has surveyed a large portion of the sky (around 9000 square degrees); although INTEGRAL is not optimized for extra-galactic studies its observations have nevertheless given us the opportunity to explore…

The Galactic bulge region is a rich host of variable high-energy point sources. Since 2005, February 17 we are monitoring the source activity in this region about every three days with INTEGRAL. Thanks to the large field of view, the…

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