Search Publications
Extended emission from short gamma-ray bursts detected with SPI-ACS/INTEGRAL
Minaev, P. Yu.; Pozanenko, A. S.; Loznikov, V. M.
The short duration ( T 90 < 2 s) gamma-ray bursts (GRBs) detected in the SPI-ACS experiment onboard the INTEGRAL observatory are investigated. Averaged light curves have been constructed for various groups of events, including short GRBs and unidentified short events. Extended emission has been found in the averaged light curves of b…
Investigation of the transient X-ray burster IGR J17380-3749 discovered by the INTEGRAL observatory
Grebenev, S. A.; Chelovekov, I. V.
Details of the discovery (in February 2004) and results of subsequent (in 2004-2009) INTEGRAL observations of the transient X-ray burster IGR J17380-3749 (IGR J17379-3747) are presented. Over the period of its observations, the INTEGRAL observatory recorded two hard X-ray flares and one type I X-ray burst from the source, which allowed the nature …
IGR J16547-1916/1RXS J165443.5-191620—a new intermediate polar from the INTEGRAL galactic survey
Lutovinov, A. A.; Revnivtsev, M. G.; Burenin, R. A. +2 more
We present the results of our optical identification of the X-ray source IGR J16547-1916 detected by the INTEGRAL observatory during a deep all-sky survey. Analysis of the spectroscopic data from the SWIFT and INTEGRAL observatories in the X-ray energy band and from the BTA (Special Astrophysical Observatory) telescope in the optical band has show…
Search for outbursts in the narrow 511-keV line from compact sources based on INTEGRAL data
Tsygankov, S. S.; Churazov, E. M.
We present the results of a systematic search for outbursts in the narrow positron annihilation line on various time scales (5 × 104-106 s) based on the SPI/INTEGRAL data obtained from 2003 to 2008. We show that no outbursts were detected with a statistical significance higher than ∼6 σ for any of the time scales considered o…
New fast X-ray transient IGR J18462-0223 discovered by the INTEGRAL observatory
Sunyaev, R. A.; Grebenev, S. A.
Details of the discovery of a new X-ray source, IGR J18462-0223, on October 12, 2007, during a short (several hours), intense (∼35 mCrab at the peak) outburst of hard radiation by the IBIS/ISGRI gamma-ray telescope onboard the INTEGRAL observatory are given. The detection of another earlier outburst from this source occurred on April 28, 2006, in …