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Particle acceleration mechanisms

Blandford, R. D. (1994) Particle acceleration mechanisms. Astrophysical Journal Supplement Series, 90 (2). pp. 515-520. ISSN 0067-0049. http://resolver.caltech.edu/CaltechAUTHORS:20181116-133541880

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Abstract

High-energy particle acceleration is observed to proceed in a diverse variety of astrophysical sites ranging from the terrestrial aurorae to the most distant quasars. Particle acceleration is a fairly common channel for the release of large-scale kinetic, rotational, and magnetic energy. Physical mechanisms include electrostatic acceleration, stochastic processes, and diffusive shock energization. Cosmic-ray energy spectra have shapes which reflect escape, collisional, and radiative losses. The overall acceleration efficiency is controlled by the low-energy particle injection which may, in turn, feed back into the energization. Recent observational developments, which illustrate these general principles and raise fresh questions, are briefly summarized.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1086/191869DOIArticle
ORCID:
AuthorORCID
Blandford, R. D.0000-0002-1854-5506
Additional Information:© 1994 The American Astronomical Society. Received 1993 March 16; accepted 1993 June 9. I am grateful to Jon Arons, F. Coroniti, and Hal Zirin for last minute advice and especially to Ian Axford for removing several misconceptions and infelicities from the manuscript. Support under NSF grant AST 89-17765 and NASA grant NAGW 2816 is gratefully acknowledged.
Group:TAPIR
Funders:
Funding AgencyGrant Number
NSFAST 89-17765
NASANAGW 2816
Subject Keywords:acceleration of particles
Record Number:CaltechAUTHORS:20181116-133541880
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20181116-133541880
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90983
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Nov 2018 21:44
Last Modified:16 Nov 2018 21:44

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