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Turbulent Magnetic Field Amplification behind Strong Shock Waves in GRB and SNR

Published online by Cambridge University Press:  05 September 2012

Tsuyoshi Inoue
Tsuyoshi Inoue*
Affiliation:
Department of Physics and Mathmatics, Aoyama Gakuin University, Fuchinobe, Chuou-ku, Sagamihara 252-5258, Japan email: inouety@phys.aoyama.ac.jp
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Abstract

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Using three-dimensional (special relativistic) magnetohydrodynamics simulations, the amplification of magnetic field behind strong shock wave is studied. In supernova remnants and gamma-ray bursts, strong shock waves propagate through an inhomogeneous density field. When the shock wave hit a density bump or density dent, the Richtmyer-Meshkov instability is induced that cause a deformation of the shock front. The deformed shock leaves vorticity behind the shock wave that amplifies the magnetic field due to the stretching of field lines.

Keywords

magnetic fieldsturbulencegamma rays: burstssupernova remnants

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