Query : 2010A&A...521A..14M

2010A&A...521A..14M - Astronomy and Astrophysics, volume 521, A14-14 (2010/10-1)

A simple model for electron plasma heating in supernova remnants.


Abstract (from CDS):

Multiwavelength observations of supernova remnants can be explained within the framework of diffusive shock acceleration theory, which allows effective conversion of the explosion energy into cosmic rays. Although the models of nonlinear shocks describe reasonably well the nonthermal component of emission, certain issues, including the heating of the thermal electron plasma and the related X-ray emission, still remain open. Study of electron heating in supernova remnants in the Sedov phase due to Coulomb exchange between protons and electrons. Numerical solution of the equations of the Chevalier model for supernova remnant evolution, coupled with Coulomb scattering heating of the electrons.The electron temperature and the X-ray thermal Bremsstrahlung emission from supernova remnants have been calculated as functions of the relevant parameters. Since only the Coulomb mechanism was considered for electron heating, the values obtained for the electron temperatures should be treated as lower limits.
Result. from this work can be useful to constrain model parameters for observed SNRs.

Abstract Copyright:

Journal keyword(s): shock waves - ISM: supernova remnants - radiation mechanisms: thermal

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 SN 1572A SN* 00 25 21.5 +64 08 27           B8 1172 1
2 ESO 134-11 HII 14 40 29 -62 38.7           ~ 555 1
3 NAME Lupus SN SNR 15 02 22.1 -42 05 49           ~ 1315 1
4 NAME Cyg Loop SNR 20 51.0 +30 40           ~ 898 0

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