Cosmic ray acceleration at oblique shocks

A. R. Bell*, K. M. Schure, B. Reville

*Corresponding author for this work

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1208-1216
Number of pages9
JournalMonthly Notices of the Royal Astronomical Society
Volume418
Issue number2
DOIs
Publication statusPublished - Dec 2011

Keywords

  • ISM: supernova remnants
  • shock waves
  • PARTICLE-ACCELERATION
  • SUPERNOVA REMNANT
  • MAGNETIC-FIELDS
  • SN 1987A
  • FLUX-DENSITY
  • RADIO REMNANT
  • TRANSPORT
  • AMPLIFICATION
  • acceleration of particles
  • SYNCHROTRON SPECTRUM
  • cosmic rays
  • EMISSION

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