Mathematics – Logic
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...405..278m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 405, no. 1, p. 278-284.
Mathematics
Logic
404
Astronomical Models, Fireballs, Gamma Ray Bursts, Relativistic Velocity, Gamma Ray Spectra, Neutron Stars, Shock Waves
Scientific paper
We discuss the production of cosmological gamma-ray bursts intense enough to be detected at cosmological distances. Events such as the coalescence of compact binaries can create sufficient energy on time scales much less than 1 s. A short 'primary' burst is expected when the resultant fireball becomes optically thin, but this may be weak because the bulk of the radiative energy has been converted into kinetic energy while still trapped within the fireball. But when this expanding material impacts on an external medium, its bulk kinetic energy can be rerandomized. The requirements on the composition of the fireball itself are less stringent than for other interpretations of cosmological gamma-ray bursts. Moreover, our model suggests that the spectra and time structure of the bursts may depend in interesting ways on the environment in which the energy-generating event occurs.
Meszaros Peter
Rees Martin J.
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