Physics
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....6.2080b&link_type=abstract
Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int
Physics
Scientific paper
Models of nonthermal particle acceleration in the vicinity of active star forming regions are reviewed. We discuss a collective effect of both stellar winds of massive stars and core collapsed supernovae as particle acceleration agents. Collective supernova explosions with great energy release in the form of multiple interacting shock waves inside the superbubbles are argued as a favourable site of nonthermal particle acceleration. The acceleration mechanism provides an efficient creation of a nonthermal nuclei population with a hard low-energy spectrum, containing a substantial part of the kinetic energy released by the winds of young massive stars and supernovae. We discuss a model of temporal evolution of particle distribution function accounting for the nonlinear effect of the reaction of the accelerated particles on the shock turbulence inside the superbubble. Hard spectrum extends up to a break energy that depends strongly on the nuclei injection rate. The model illustrates that both the low-energy metal-rich nonthermal component and the standard galactic cosmic rays could be efficiently produced by superbubbles at different evolution stages.
Bykov Andrei M.
Toptygin Igor N.
No associations
LandOfFree
Cosmic rays in superbubbles: spectra and composition above the knee does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cosmic rays in superbubbles: spectra and composition above the knee, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmic rays in superbubbles: spectra and composition above the knee will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-794310