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).

arXiv comment12 pages, 4 figures, accepted for publication in ApJ Letters

References in corpus (7)

• Magnetic Field Amplification in Tycho and other Shell-type Supernova Remnants
• The asymmetric radio remnant of SN 1987A
• Variation of cosmic ray injection across supernova shocks
• Evolution of the Radio Remnant of SN 1987A: 1990 -- 2001
• The X-ray Spectrum of Supernova Remnant 1987A
• A Chandra View of The Morphological And Spectral Evolution of Supernova Remnant 1987A
• Search for TeV gamma-rays from SN 1987A in 2001

Cited by in corpus (13)

• Multi-frequency Radio Measurements of SN 1987A over 22 Years
• Spectral and morphological analysis of the remnant of Supernova 1987A with ALMA & ATCA
• Cosmic Ray Acceleration by Supernova Shocks
• Multi-dimensional simulations of the expanding supernova remnant of SN 1987A
• Evolution of the Chandra CCD Spectra of SNR 1987A: Probing the Reflected-Shock Picture
• Thermal Emission and Radioactive Lines, but No Pulsar, in the Broadband X-Ray Spectrum of Supernova 1987A
• Expected gamma-ray emission of supernova remnant SN 1987A
• Low Radio Frequency Observations and Spectral Modelling of the Remnant of Supernova 1987A
• Performing a stellar autopsy using the radio-bright remnant of SN 1996cr
• Re-examination of the Expected gamma-ray emission of supernova remnant SN 1987A
• Radio Observations of Supernova 1987A
• CANGAROO-III Search for Gamma Rays from SN 1987A and the Surrounding Field
• Constraining Galactic $p\gamma$ Interactions with Cosmic Ray Electron and Positron Spectra