Cosmic-ray acceleration and escape from supernova remnants
Galactic cosmic-ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock is strongly amplified by CRs escaping the SNR. A model formulated in terms of the electric charge carried by escaping CRs predicts the maximu...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2013
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| _version_ | 1797097445564350464 |
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| author | Bell, A Schure, K Reville, B Giacinti, G |
| author_facet | Bell, A Schure, K Reville, B Giacinti, G |
| author_sort | Bell, A |
| collection | OXFORD |
| description | Galactic cosmic-ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock is strongly amplified by CRs escaping the SNR. A model formulated in terms of the electric charge carried by escaping CRs predicts the maximum CR energy and the energy spectrum of CRs released into the surrounding medium. We find that historical SNRs such as Cas A, Tycho and Kepler may be expanding too slowly to accelerate CRs to the knee at the present time. © 2013 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. |
| first_indexed | 2024-03-07T04:55:36Z |
| format | Journal article |
| id | oxford-uuid:d68284b2-272d-4adf-9860-939884c778a4 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:55:36Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:d68284b2-272d-4adf-9860-939884c778a42022-03-27T08:33:59ZCosmic-ray acceleration and escape from supernova remnantsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d68284b2-272d-4adf-9860-939884c778a4EnglishSymplectic Elements at Oxford2013Bell, ASchure, KReville, BGiacinti, GGalactic cosmic-ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock is strongly amplified by CRs escaping the SNR. A model formulated in terms of the electric charge carried by escaping CRs predicts the maximum CR energy and the energy spectrum of CRs released into the surrounding medium. We find that historical SNRs such as Cas A, Tycho and Kepler may be expanding too slowly to accelerate CRs to the knee at the present time. © 2013 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. |
| spellingShingle | Bell, A Schure, K Reville, B Giacinti, G Cosmic-ray acceleration and escape from supernova remnants |
| title | Cosmic-ray acceleration and escape from supernova remnants |
| title_full | Cosmic-ray acceleration and escape from supernova remnants |
| title_fullStr | Cosmic-ray acceleration and escape from supernova remnants |
| title_full_unstemmed | Cosmic-ray acceleration and escape from supernova remnants |
| title_short | Cosmic-ray acceleration and escape from supernova remnants |
| title_sort | cosmic ray acceleration and escape from supernova remnants |
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