Observation of an absorption feature in a gamma ray burst spectrum

Details Observation of an absorption feature in a gamma ray burst spectrum Observation of an absorption feature in a gamma ray burst spectrum

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984aipc..115..373h&link_type=abstract

AIP Conference Proceedings, Volume 115, pp. 373-377 (1984).

Computer Science

46

X-Ray Sources, X-Ray Bursts, Neutron Stars

Scientific paper

A gamma ray burst was detected on March 25, 1978 by the High Energy X-ray and Low Energy Gamma Ray Experiment on HEAO-1. The burst spectrum shows an absorption feature at 55+/-5 keV with an equivalent width of 13+/-3 keV, confirming the observation of similar features by the KONUS experiment. The burst spectrum also is characterized by a hard component extending from ``0.25-6 MeV. This component can be interpreted in terms of a fireball model for gamma ray bursts, which places the distance to the source at 400-700 pc. The integrated fluence of the burst between 0.025 and 6 MeV is 1.5×10-5 ergs/cm2. The burst source has been localized to within a degree of RA=237.5° and Dec=76.2°.

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