8th HEAD Meeting, 8-11 September, 2004
Session 18 Gamma-ray Bursts
Poster, Thursday, September 9, 2004, 9:00am-10:00pm

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[18.14] GLAST Burst Monitor Trigger Classification Algorithm

D. J. Perrin (Louisiana State University), E. D. Sidman (Bowdoin College), C. A. Meegan (NASA/Marshall Space Flight Center), M. S. Briggs, V. Connaughton (University of Alabama, Huntsville)

The Gamma Ray Large Area Space Telescope (GLAST), scheduled for launch in the first quarter of 2007, will consist of two instruments, the GLAST Burst Monitor (GBM) and the Large Area Telescope (LAT). One of the goals of the GBM is to identify and locate gamma-ray bursts using on-board software. The GLAST observatory can then be re-oriented to allow observations by the LAT. A Bayesian analysis will be used to distinguish gamma-ray bursts from other triggering events, such as solar flares, magnetospheric particle precipitation, soft gamma repeaters (SGRs), transient hard X-ray sources, and Cygnus X-1 flaring. The trigger parameters used in the analysis are the burst celestial coordinates, angle from the Earth’s horizon, spectral hardness, and the spacecraft geomagnetic latitude. The algorithm will be described and the results of testing will be presented. This project is supported in part by NASA's Undergraduate Student Research Program.

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