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Title:
A mechanism for strong shock electron heating in supernova remnants
Authors:
Cargill, P. J.; Papadopoulos, K.
Affiliation:
AA(Maryland, University, College Park), AB(Maryland, University, College Park)
Publication:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 329, June 1, 1988, p. L29-L32. (ApJL Homepage)
Publication Date:
06/1988
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Electron Energy, Nebulae, Shock Heating, Supernova Remnants, Collisionless Plasmas, Cosmic Plasma, Shock Fronts, X Ray Sources
DOI:
10.1086/185170
Bibliographic Code:
1988ApJ...329L..29C

Abstract

It is shown that collisionless shock waves propagating away from a supernova may be directly responsible for the 10 keV X-ray emission seen in supernova remnants. A sequence of plasma instabilities (Buneman and ion acoustic) between the reflected and/or transmitted ions and the background electrons at the foot of the shock front can give rise to rapid anomalous heating of electrons. Hybrid simulations of a perpendicular collisionless shock are presented to demonstrate that this heating can arise within a self-consistently computed shock structure.

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