Internal Dissipation in Fireballs

Details Internal Dissipation in Fireballs Internal Dissipation in Fireballs

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.3415b&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #34.15; Bulletin of the American Astronomical Society, Vol. 32, p.1246

Astronomy and Astrophysics

Astronomy

Scientific paper

The fraction of a fireball kinetic energy that is dissipated by internal shocks is sensitive to the amplitude of initial fluctuations in the fireball. We give a simple analytical description for the dissipation of modest-amplitude fluctuations and confirm it with direct numerical simulations. At high amplitudes, the dissipation occurs in a nonlinear regime with efficiency approaching 100 the fireball energy can then be radiated away by the prompt gamma-ray burst, and only a fraction remains for the afterglow.

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