Discovery of a Distinct Higher Energy Spectral Component in GRB941017

Details Discovery of a Distinct Higher Energy Spectral Component in GRB941017 Discovery of a Distinct Higher Energy Spectral Component in GRB941017

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aipc..727..203g&link_type=abstract

GAMMA-RAY BURSTS: 30 YEARS OF DISCOVERY: Gamma-Ray Burst Symposium. AIP Conference Proceedings, Volume 727, pp. 203-207 (2004).

Computer Science

Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

We report an observation of a multi-MeV spectral component in the burst of 17 October 1994 that is distinct from the previously observed lower energy gamma-ray component. This higher-energy component is described by a power law of differential photon number index ~ -1 up to 200 MeV. Its flux decays more slowly and its fluence is more than 3 times the fluence of the lower-energy component. Despite the unique behavior of this higher-energy component, the lower-energy component behaves similarly to most GRBs, presenting a hard-to-soft temporal evolution.

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