Hard X-ray Bursts by INTEGRAL in 2003-2004 (Chelovekov+, 2006)

Details Hard X-ray Bursts by INTEGRAL in 2003-2004 (Chelovekov+, 2006) Hard X-ray Bursts by INTEGRAL in 2003-2004 (Chelovekov+, 2006)

Jan 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ycat..90320508c&link_type=abstract

VizieR On-line Data Catalog: J/PAZh/32/508. Originally published in: 2006PAZh...32..508C; 2006AstL...32..456C

Mathematics

Probability

X-Ray Sources

Scientific paper

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 bursts. The time history of the IBIS/ISGRI total count rate in the energy range 15-25keV revealed 1077 bursts of durations from 5 to 500s with a high statistical significance (over the entire period of observations, only one event could be detected by chance with a probability of 20%). A part from the events associated with cosmic gamma-ray bursts (detected in the field of view or passed through the IBIS shield), solar flares, and activity of the soft gamma repeater SGR 1806-20, we were able to localize 105 bursts and, with one exception, to identify them with previously known persistent or transient X-ray sources (96 were identified with known X-ray bursters). In one case, the burst source was a new burster in a low state that received the name IGR J17364-2711. Basic parameters of the localized bursts and their identifications are presented in the catalog of bursts. Curiously enough, 61 bursts were detected from one X-ray burster, GX 354-0. The statistical distributions of bursts in duration, maximum flux, and recurrence time have been analyzed for this source. Some of the bursts observed with the IBIS/ISGRI telescope were also detected by the JEM-X telescope onboard the INTEGRAL observatory in the standard X-ray energy range 3-20keV.
(1 data file).

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