Particle acceleration in supernova-remnant shocks |
| |
| Authors: | S P Reynolds |
| |
| Institution: | (1) Faculty of Science, Ibaraki University, Mito 310-8512, Japan;(2) Institute for Cosmic Ray Research, University of Tokyo, Kashiwa 263-8555, Japan; |
| |
| Abstract: | It has been known for over 50 years that the radio emission from shell supernova remnants (SNRs) indicates the presence of
electrons with energies in the GeV range emitting synchrotron radiation. The discovery of nonthermal X-ray emission from supernova
remnants is now 30 years old, and its interpretation as the extension of the radio synchrotron spectrum requires electrons
with energies of up to 100 TeV. SNRs are now detected at GeV and TeV photon energies as well. Strong suggestions of the presence
of energetic ions exist, but conclusive evidence remains elusive. Several arguments suggest that magnetic fields in SNRs are
amplified by orders of magnitude from their values in the ambient interstellar medium. Supernova remnants are thus an excellent
laboratory in which to study processes taking place in very high Mach-number shocks. I review the observations of high-energy
emission from SNRs, and the theoretical framework in which those observations are interpreted. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
