A search for weak gamma-ray bursts with GRANAT/SIGMA

Details A search for weak gamma-ray bursts with GRANAT/SIGMA A search for weak gamma-ray bursts with GRANAT/SIGMA

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26as...97...85s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 97, no. 1, p. 85-88.

Astronomy and Astrophysics

Astronomy

Gamma Ray Bursts, Gamma Ray Telescopes, Milky Way Galaxy, Spaceborne Astronomy, Galactic Nuclei, Sky Surveys (Astronomy)

Scientific paper

Results are presented of a search for weak gamma-ray bursts (GRB) with GRANAT/SIGMA, during which the narrow-aperture coded mask telescope SIGMA was operated for about 5300 hr. Despite the high sensitivity of the cell to the on-axis events, no bursts were actually found within the coded field of view. For an object located at a distance of 8.5 kpc, the threshold burst luminosity in the 40-90 keV band was found to be comparable with the Eddington limit for a neutron star. The absence of weak GRB events form the Galactic center direction indicates that either the luminosity of a typical GRB is below about 10 exp 38 ergs/sec and GRB are of local origin, or, alternatively, that the luminosity is as high as about 10 exp 40 ergs/sec or greater and most GRBs come from a massive galactic 'halo' or are of cosmological origin.

Affiliated with

Also associated with

No associations

Rating

A search for weak gamma-ray bursts with GRANAT/SIGMA does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A search for weak gamma-ray bursts with GRANAT/SIGMA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A search for weak gamma-ray bursts with GRANAT/SIGMA will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1771833