Internal Shocks in a Relativistic Wind as a Source for Gamma-Ray Bursts?

Details Internal Shocks in a Relativistic Wind as a Source for Gamma-Ray Bursts? Internal Shocks in a Relativistic Wind as a Source for Gamma-Ray Bursts?

Sep 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.231..441m&link_type=abstract

Astrophysics and Space Science, Volume 231, Issue 1-2, pp. 441-444

Astronomy and Astrophysics

Astrophysics

5

Gamma-Ray Bursts, Relativistic Wind, Shock Waves

Scientific paper

We investigate the recent proposal made by Rees and Mészáros (1994) that GRBs result from internal shocks in the relativistic wind emerging from two coalesced neutron stars. Using a simple model of that wind, where a large number of layers with different Lorentz factors interact through a series of mildly relativistic shocks we compute the efficiency of the process and the time profile of the resulting burst. We show that a great variety of profiles can be obtained using plausible initial distributions of Lorentz factors in the wind. However, the rather low overall efficiency (< 10%) of the process and limits imposed on the burst duration can be used to put severe constraints on the nature of the energy source.

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