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Hydrodynamics of Relativistic Fireballs

Tsvi Piran·Amotz Shemi·Ramesh Narayan
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Abstract

We examine analytically and numerically the evolution of a relativistic fireball. We show that, after an early rearrangement phase, most of the matter and energy in the fireball is concentrated within a narrow shell. The shell propagates at nearly the speed of light, with a frozen radial profile and according to a simple set of scaling laws. The spectrum of the escaping radiation is harder at early times and softer later on. The results are applicable to models of $γ$-ray bursts. Submitted to Monthly Notices of the RAS Figures available on request from the authors

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Tsvi Piran, Amotz Shemi, Ramesh Narayan. 1993-01-12. Hydrodynamics of Relativistic Fireballs. https://doi.org/10.1093/mnras%2F263.4.861

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