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Particle acceleration by astrophysical shocks
Abstract
A new mechanism is proposed for acceleration of a power-law distribution of cosmic rays with approximately the observed slope. High-energy particles in the vicinity of a shock are scattered by Alfven waves carried by the converging fluid flow leading to a first-order acceleration process in which the escape time is automatically comparable to the acceleration time. Shocks from supernova explosions propagating through the interstellar medium can account for the acceleration of galactic cosmic rays. Similar processes occurring in extragalactic radio sources can lead to efficient in situ acceleration of relativistic electrons.
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Citations
Cited by
Drury, L. O. (1983) · Reports on Progress in Physics · doi:10.1088/0034-4885/46/8/002 · Cited by 1,713
The interstellar environment of our galaxy
Ferrière, K. M. (2001) · Reviews of Modern Physics · doi:10.1103/revmodphys.73.1031 · Cited by 1,019
Theoretical Challenges in Galaxy Formation
Naab, T., & Ostriker, J. P. (2017) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-081913-040019 · Cited by 722
Self-citationThe Astrophysics of Ultrahigh-Energy Cosmic Rays
Kotera, K., & Olinto, A. V. (2011) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-081710-102620 · Cited by 470
Ostriker, J. P., & McKee, C. F. (1988) · Reviews of Modern Physics · doi:10.1103/revmodphys.60.1 · Cited by 436
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Metadata
- Authors
- Blandford, R. D., & Ostriker, J. P.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1978-04
- Volume
- 221
- Pages
- L29
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2069414247
- Cited by
- 1,967
- References
- 0
- FWCI
- 9.39
- Type
- journal article
- Language
- en
- Open access
- closed
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- Blandford, R. D., & Ostriker, J. P. (1978). Particle acceleration by astrophysical shocks. The Astrophysical Journal. https://doi.org/10.1086/182658
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
