A qualitative study of cosmic fireballs and gamma-ray bursts

Details A qualitative study of cosmic fireballs and gamma-ray bursts A qualitative study of cosmic fireballs and gamma-ray bursts

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.183..359c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 183, May 1978, p. 359-365.

Astronomy and Astrophysics

Astronomy

226

Bursts, Cosmic Rays, Fireballs, Gamma Rays, Electron-Positron Pairs, Luminosity, Pair Production

Scientific paper

If a large amount of energy is suddenly converted into a concentrated burst of (MeV) gamma rays, the prolific creation of electron-positron pairs will inhibit the escape of photons until they have been degraded below the pair-production threshold. This sets general constraints on the possible luminosities of rapidly varying gamma-ray sources and suggests why the observed gamma-ray bursts have an approximately standardized and 'soft' spectrum.

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