Particle Acceleration at Multiple Internal Relativistic Shocks

Details Particle Acceleration at Multiple Internal Relativistic Shocks Particle Acceleration at Multiple Internal Relativistic Shocks

2006-10-09

arxiv.org/abs/astro-ph/0610251v2

Astrophys.SpaceSci.309:167-171,2007

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures. Accepted for publication in Astrophysics and Space Science. v2: Corrected typos

Scientific paper

10.1007/s10509-007-9419-6

Relativistic shocks provide an efficient method for high-energy particle acceleration in many astrophysical sources. Multiple shock systems are even more effective and of importance, for example, in the internal shock model of gamma-ray bursts. We investigate the reacceleration of pre-existing energetic particles at such relativistic internal shocks by the first order Fermi process of pitch angle scattering. We use a well established eigenfunction method to calculate the resulting spectra for infinitely thin shocks. Implications for GRBs and relativistic jets are discussed.

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