Gamma-ray Bursts from the HETE Mission: Results from the First Year and Future Prospects

Details Gamma-ray Bursts from the HETE Mission: Results from the First Year and Future Prospects Gamma-ray Bursts from the HETE Mission: Results from the First Year and Future Prospects

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apr.x6001r&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

The HETE mission, successfully launched in October 2000, is the first satellite mission devoted to the study of gamma-ray bursts (GRBs). Operations commenced in February 2001. HETE utilizes a matched suite of wide-field X-ray and γ-ray detectors mounted on a compact spacecraft. A unique feature of HETE is its potential for localizing GRBs with ~10 arcmin accuracy (medium energy X-rays) to ~20 arcsec accuracy (low energy X-rays). These GRB locations are transmitted, within ~ seconds to ~ minutes, directly to a dedicated network of telemetry receivers at 14 automated ``Burst Alert Stations" (BAS) sited along the satellite ground track. The BAS network then re-distributes the GRB locations worldwide via the Internet in ~1 second. Thus, prompt optical, IR, and radio follow-up identifications are possible for a large fraction of HETE GRBs. HETE detects ~40 GRBs yr-1, of which it localizes ~15 yr-1. In addition, it has detected ~25 bursts from SGRs, and >150 X-ray bursts. Highlights from the first year of HETE operations will be presented, as will be the results anticipated from an extended mission.

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