INTEGRAL observations of SGR 1833-0832: The detection of the prompt emission and the non-detection of soft gamma-rays in the post-burst era

Astronomy and Astrophysics – Astronomy

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X-Ray, Gamma Ray, Neutron Stars, Pulsars, Soft Gamma-Ray Repeaters, Transients

Scientific paper

INTEGRAL observed the Scutum region around Galactic longitude L=25 at the time of a burst from a source dubbed SGR 1833-0832 (GCN's #10526,#10530;#10536; ATEL #2493). The source off-axis angle was about 5.7 degrees, just outside the fully coded field of view of the Soft Gamma-Ray Imager ISGRI aboard INTEGRAL. In the detector light curve of ISGRI data for the 20-150 keV band the short duration burst (about 16 ms; GCN #10526) was clearly detected at time 18:35:57.07 TT, March 19, 2010 (=18:34:50.9 UTC, March 19, 2010) and thus coincident with the Swift BAT trigger time.

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