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Thanks to the INTEGRAL satellite the way of looking at the hard X-ray sky above 20 keV has changed substantially. Through the unique imaging and spectroscopy capabilities of the IBIS instrument that has formed the basis of the INTEGRAL…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-14 P. Parisi , N. Masetti

A systematic search for cosmic gamma-ray bursts (GRBs) and other short hard X-ray events in the archival data from the IBIS/ISGRI telescope of the INTEGRAL observatory over 2003-2018 has been carried out. Seven previously unknown GRBs have…

High Energy Astrophysical Phenomena · Physics 2020-05-26 I. V. Chelovekov , S. A. Grebenev , A. S. Pozanenko , P. Yu. Minaev

Investigations that were carried out over the last two decades with novel and more sensitive instrumentation have dramatically improved our knowledge of the more violent physical processes taking place in galactic and extra-galactic…

After the first nine years of INTEGRAL operational life, the discovery of new sources and source types, a large fraction of which are highly transient or highly absorbed, is certainly one of the most compelling results and legacies of…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Mariateresa Fiocchi , Lorenzo Natalucci

INTEGRAL has observed 47 long-duration GRBs (T_90 > 2s) and 1 short-duration GRB (T_90 < 2s) in five years of observation since October 2002. This work presents the properties of the prompt emission of GRB 070707, which is the first short…

Astrophysics · Physics 2009-11-13 S. McGlynn , S. Foley , S. McBreen , L. Hanlon , R. O'Connor , A. Martin Carrillo , B. McBreen

The INTEGRAL mission has played a major role in blazar science, thanks to its sensitive coverage of a spectral region (3-100 keV) that is critical for this type of sources, to its flexibility of scheduling and to the large field of view of…

High Energy Astrophysical Phenomena · Physics 2017-03-28 Elena Pian

INTEGRAL has two sensitive gamma-ray instruments that have detected 46 gamma-ray bursts (GRBs) up to July 2007. We present the spectral, spatial, and temporal properties of the bursts in the INTEGRAL GRB catalogue using data from the…

Astrophysics · Physics 2010-04-30 S. Foley , S. McGlynn , L. Hanlon , S. McBreen , B. McBreen

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 outbursts. During the latter, occurred in…

Astrophysics · Physics 2009-11-10 E. Pian , L. Foschini , V. Beckmann

We have carried out an extensive search for gamma-ray lines in the first year of public data from the Spectrometer (SPI) on the INTEGRAL mission. INTEGRAL has spent a large fraction of its observing time in the Galactic Plane with…

Astrophysics · Physics 2008-11-26 B. J. Teegarden , K. Watanabe

On January 6th 2004, the IBAS burst alert system triggered the 8th gamma-ray burst (GRB) to be located by the INTEGRAL satellite. The position was determined and publicly distributed within 12s, prompting ESA's XMM-Newton to execute a ToO…

(abridged) Hard X-ray surveys performed by the INTEGRAL satellite have discovered a conspicuous fraction (up to 30%) of unidentified objects among the detected sources. Here we continue our identification program by selecting probable…

POLAR is a compact space-borne detector designed to perform reliable measurements of the polarization for transient sources like Gamma-Ray Bursts in the energy range 50-500keV. The instrument works based on the Compton Scattering principle…

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

Observations of SS433 by INTEGRAL carried out in March -- May 2003 are presented. SS433 is evidently detected on the INTEGRAL images of the corresponding sky region in the energy bands 25-50 and 50-100 keV. The precessional variability of…

The IBIS imager on board INTEGRAL, with a sensitivity better than a mCrab in deep observations and a point source location accuracy of the order of few arcminutes, has localized so far 723 hard X-ray sources in the 17--100 keV energy band,…

High Energy Astrophysical Phenomena · Physics 2015-05-19 M. Fiocchi , L. Bassani , A. Bazzano , P. Ubertini , R. Landi , F. Capitanio , A. J. Bird

In the last decade our knowledge on galactic black hole systems and in particular on their high energy behavior has considerably improved. I will briefly review here the main results obtained by the high-energy missions SIGMA/GRANAT,…

Astrophysics · Physics 2007-05-23 A. Goldwurm

LS 5039/RX J1826.2-1450 is one of the few High Mass X-ray binary systems from which radio and high energy TeV emission has been observed. Moreover, variability of the TeV emission with orbital period was detected. We investigate the hard…

Astrophysics · Physics 2009-11-13 A. D. Hoffmann , D. Klochkov , A. Santangelo , D. Horns , A. Segreto , R. Staubert , G. Puehlhofer

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

All of the observations performed with the IBIS telescope onboard the INTEGRAL observatory during the first one and a half years of its in-orbit operation (from February 10, 2003, through July 2, 2004) have been analyzed to find X-ray…

Astrophysics · Physics 2009-11-11 I. V. Chelovekov , S. A. Grebenev , R. A. Sunyaev

The spectrometer SPI, one of the two main instruments of the INTEGRAL spacecraft, has strong capabilities in the field of Gamma-Ray Burst (GRB) detections. In its 16 deg field of view (FoV) SPI is able to trigger and to localize GRBs with…

Astrophysics · Physics 2007-05-23 Andreas von Kienlin , Nikolas Arend , Giselher Lichti , Andrew Strong , Paul Connell
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