Magnetic field in supernova remnant SN 1987A
Abstract
A nonlinear kinetic theory of cosmic ray (CR) acceleration in supernova remnants is employed to investigate the properties of the remnant SN 1987A. It is shown that a large downstream magnetic field ~10 mG is required to fit the existing observational data. Such a strong field together with the strong shock modification due to CR backreaction provides the steep and concave radioemission spectrum and considerable synchrotron cooling of high energy electrons which diminish their X-ray synchrotron flux below the observed Chandra flux which has to be considered as an upper limit for nonthermal X-ray emission. The expected gamma-ray energy flux at TeV-energies at the current epoch is 2x10^{-13} erg/(cm^2 s).
Keywords
Cite
@article{arxiv.astro-ph/0608586,
title = {Magnetic field in supernova remnant SN 1987A},
author = {E. G. Berezhko and L. T. Ksenofontov},
journal= {arXiv preprint arXiv:astro-ph/0608586},
year = {2009}
}
Comments
12 pages, 4 figures, accepted for publication in ApJ Letters