Hydrodynamics of Internal Shocks in Relativistic Outflows
Abstract
We study the hydrodynamical effects of two colliding shells, adopted to model internal shocks in various relativistic outflows such as gamma-ray bursts and blazars. We find that the density profiles are significantly affected by the propagation of rarefaction waves. A split-feature appears at the contact discontinuity of the two shells. The shell spreading with a few ten percent of the speed of light is also shown to be a notable aspect. The conversion efficiency of the bulk kinetic energy to internal one shows deviations from the widely-used inelastic two-point-mass-collision model. Observational implications are also shortly discussed.
Keywords
Cite
@article{arxiv.astro-ph/0410377,
title = {Hydrodynamics of Internal Shocks in Relativistic Outflows},
author = {M. Kino and A. Mizuta and A. Celotti and S. Yamada},
journal= {arXiv preprint arXiv:astro-ph/0410377},
year = {2009}
}
Comments
6 pages, 4 figures, Proceeding of International Symposium on High Energy Gamma-ray Astronomy (July 26-30, 2004, Heidelberg, Germany)