Magnetic field in supernova remnant SN 1987A

Details Magnetic field in supernova remnant SN 1987A Magnetic field in supernova remnant SN 1987A

2006-08-28

arxiv.org/abs/astro-ph/0608586v1

Astrophys.J.650:L59-L62,2006

Astronomy and Astrophysics

Astrophysics

12 pages, 4 figures, accepted for publication in ApJ Letters

Scientific paper

10.1086/508615

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).

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