8th HEAD Meeting, 8-11 September, 2004
Session 16 Missions, Instruments and Data Analysis
Poster, Thursday, September 9, 2004, 9:00am-10:00pm

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[16.04] EXIST's Gamma-Ray Burst Sensitivity

D. L. Band (GSFC/UMBC), EXIST Team

Proposed as the Black Hole Finder Probe for the Beyond Einstein program, EXIST will be a significantly more sensitive gamma-ray burst detector compared to previous missions, particularly for bursts with low average photon energy Ep (e.g., X-ray rich bursts and X-ray Flashes); EXIST should be ~5 times more sensitive than Swift. EXIST's low energy sensitivity should be ideal for detecting high redshift bursts whose gamma rays will be redshifted into the X-ray band. Therefore, EXIST's threshold photon flux as a function of Ep can be compared to models of the burst population as a function of redshift. Based on EXIST's sensitivity and large field-of-view, we predict the detection of ~2 bursts per day.

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Bulletin of the American Astronomical Society, 36 #3
© 2004. The American Astronomical Soceity.