Bursts of gamma rays from Compton scattering at cosmological distances

Details Bursts of gamma rays from Compton scattering at cosmological distances Bursts of gamma rays from Compton scattering at cosmological distances

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...366..343z&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 366, Jan. 10, 1991, p. 343-352.

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13

Compton Effect, Computational Astrophysics, Cosmology, Gamma Ray Bursts, Relic Radiation, Black Body Radiation, Electron Energy, Electron-Positron Pairs, Red Shift, Relativistic Electron Beams

Scientific paper

Compton scattering of the microwave background photons by beams of ultrarelativistic electrons at large redshifts, z much greater than 1, is proposed as a source of some gamma-ray bursts. Such beams may be produced by cusps on superconducting cosmic strings. In the present model, a very narrow beam of ultrarelativistic electron-positron pairs scatters the microwave background photons into a very narrow beam of gamma rays. While the pairs lose energy, the beam of gamma rays opens up and sweeps the observer. The expected time variability and spectra of the resulting gamma-ray burst are calculated. The bursts have a rapid rise time, followed by a more gradual decline. The spectra are initially very hard and become softer during the decline.

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