Possible EGRET Gamma-Ray Burst Detection Independent of BATSE Triggering
نویسندگان
چکیده
EGRET spark chamber data collected between 1991 April 22 and 1994 August 29 have been analyzed for gamma-ray burst events independent of BATSE triggering. To date, ve gamma-ray bursts that are coincident with a trigger from the BATSE instrument have been detected in the EGRET spark chamber. The EGRET-detected bursts have high energy power law tails and, in some cases, long duration emission. Because BATSE is sensitive in a lower energy range (25-600 keV), there may be other high energy gamma-ray bursts detectable with EGRET (30 MeV-30 GeV) that do not trigger BATSE. Also, bursts with long duration emission may be more easily detected with EGRET. Furthermore, burst events may have occurred while BATSE was temporarily inactive. Two previously detected gamma ray bursts were independently detected, and one new possible detection was made on a timescale of 3 minutes, although the signiicance is subject to systematic errors.
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تاریخ انتشار 2007