On the morphology and spectra of the short gamma-ray bursts
Abstract
The rise and decay time characteristics and the energy spectra of 20 short, single-peaked gamma-ray bursts detected by the Franco-Soviet Signe instruments are analyzed in detail. It is found that the time histories are well described by simple exponential functions, with e-folding rise times approximately e-folding decay times in general. Both the rise and decay times extend over a range of several orders of magnitude, suggesting that there is no 'standard' burst profile, and that there is probably a wide variety of physical conditions present in different bursters. Although it was found that a variety of physical models could generally be used to describe the energy spectrum of each event, all the bursts studied had hard (e.g., kT greater than 100 keV) spectra, and no significant correlation could be found between time histories and spectral characteristics.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- October 1984
- DOI:
- 10.1086/162557
- Bibcode:
- 1984ApJ...285..791B
- Keywords:
-
- Energy Spectra;
- Gamma Ray Bursts;
- Decay;
- Morphology;
- Spectrum Analysis;
- Time Response;
- Venera Satellites;
- Astrophysics