HETE Triggering Algorithm

Details HETE Triggering Algorithm HETE Triggering Algorithm

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001grba.conf..393f&link_type=abstract

Gamma-Ray Bursts in the Afterglow Era: Proceedings of the International Workshop Held in Rome, Italy, 17-20 October 2000, ESO AS

Astronomy and Astrophysics

Astrophysics

1

Algorithms, Gamma Rays, Actuators, Telemetry, Real Time Operation, Flexibility, Photons

Scientific paper

The High Energy Transient Explorer (HETE) uses a triggering algorithm for gamma-ray bursts that can achieve near the statistical limit by fitting to several background regions to remove trends. Dozens of trigger criteria run simultaneously covering time scales from 80 msec to 10.5 sec or longer. Each criteria is controlled by about 25 constants which gives the flexibility to search wide parameter spaces. Gamma-ray bursts (GRB) occur at unpredictable times and satellite telemetry bandpasses are too limited to send every photon to the ground in real time. Thus, GRB experiments usually have on-board triggering systems to detect when a GRB is occurring and to switch operation modes to capture the event with maximum time and energy resolution.

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