Gamma-Ray Burst:. Problems Delineated by HETE-2 and Other Observations

Details Gamma-Ray Burst:. Problems Delineated by HETE-2 and Other Observations Gamma-Ray Burst:. Problems Delineated by HETE-2 and Other Observations

Mar 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ebhe.conf..128k&link_type=abstract

ENERGY BUDGET IN THE HIGH ENERGY UNIVERSE . Proceedings of the International Workshop. Held 22-24 February 2006 in Kashiwa, Japa

Physics

Scientific paper

Highlights of the recent observations of gamma-ray bursts are presented. In the optical afterglow of GRB030329 detected by HETE-2, strong evidence for the association of long GRBs with the core-collapse supernovae was found. With the wide energy coverage, the nature of the X-ray rich GRBs and X-ray flashes have been studied systematically with HETE-2, and they are found to have many properties in common with the classical GRBs, suggesting that they are a single phenomenon. In July 2005, HETE-2 localized a short gamma-ray burst GRB 050709, which led to the discovery of the first optical afterglow of a short GRB in a low-redshift galaxy, providing evidence that the origins of most short GRBs are different from those of long GRBs. The extremely intense flare of the soft gamma repeater SGR 1806-20 was observed in December 2004. The possible connection with the short population GRBs are discussed.

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