Cosmic ray acceleration at oblique shocks

A.R. Bell; B. Reville; K.M. Schure

Cosmic ray acceleration at oblique shocks

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arxiv 1108.0582 v1 pith:VJ2Q65SA submitted 2011-08-02 astro-ph.HE

Cosmic ray acceleration at oblique shocks

A.R. Bell , K.M. Schure , B. Reville This is my paper

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keywords shocksspectralaccelerationindexobliqueanisotropiesapproximationbreaks

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We show that the diffusion approximation breaks down for particle acceleration at oblique shocks with velocities typical of young supernova remnants. Higher order anisotropies flatten the spectral index at quasi-parallel shocks and steepen the spectral index at quasi-perpendicular shocks. We compare the theory with observed spectral indices.

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