On non-thermal particle generation in superbubbles

Details On non-thermal particle generation in superbubbles On non-thermal particle generation in superbubbles

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.255..269b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 255, March 15, 1992, p. 269-275.

Astronomy and Astrophysics

Astronomy

69

B Stars, Cosmic Rays, O Stars, Particle Acceleration, Supernovae, Interstellar Magnetic Fields, Nonthermal Radiation, Plasma Bubbles, Stellar Evolution, Stellar Winds

Scientific paper

Generation of nonthermal particles in an OB association is studied. A model of cosmic-ray acceleration is proposed where the interaction of charged particles with an ensemble of shocks and large-scale plasma motions inside the bubble is included. The cosmic-ray acceleration appears to be very efficient especially after explosions of a few supernovae in the association. The cosmic-ray acceleration time is of the order of 10 exp 5 yr. Some tens of percent of the bubble kinetic energy can be converted to the cosmic-ray acceleration.

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