Open AccessCosmic ray acceleration by a supernova shock in a dense circumstellar plasma
Author(s) -
Bell A. R.
Publication year - 2008
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2008.13011.x
Subject(s) - physics , cosmic ray , astrophysics , supernova , shock (circulatory) , astronomy , acceleration , plasma , shock wave , particle acceleration , nuclear physics , mechanics , medicine , classical mechanics
Cosmic ray acceleration may occur at a supernova shock expanding into a circumstellar wind sustaining a Parker spiral magnetic field. Cosmic rays drift to the poles producing a large cosmic ray pressure which can generate polar density cavities through which cosmic rays escape upstream of the shock. This may be relevant to gamma‐ray bursts accompanying shock breakout.