Particle Acceleration by Shocks in Supernova Remnants
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| Format: | Artículo científico |
| Langue: | en |
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Sociedade Brasileira de Física
2014
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| _version_ | 1876476197337038848 |
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| author | Anthony Raymond Bell |
| author_facet | Anthony Raymond Bell |
| contents | Particle Acceleration by Shocks in Supernova Remnants Anthony Raymond Bell Física, Astronomía y Matemáticas Cosmic rays Magnetic field Supernova remnants Particle acceleration Abstract Particle acceleration occurs on a range of scales from AU in the heliosphere to Mpc in clusters of galaxies and to energies ranging from MeV to exaelectronvolt (EeV). A number of acceleration processes have been proposed, but diffusive shock acceleration (DSA) is widely invoked as the predominant mechanism. DSA operates on all these scales and probably to the highest energies. DSA is simple, robust and predicts a universal spectrum. However, there are still many unknowns regarding particle acceleration. This paper focuses on the particular question of whether supernova remnants (SNR) can produce the Galactic cosmic ray (CR) spectrum up to the knee at a few petaelectronvolt (PeV). The answer depends in large part on the detailed physics of diffusive shock acceleration. 2014 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46432476001 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.5 Vol.44 |
| format | Artículo científico |
| id | redalyc_46432476001 |
| institution | Redalyc |
| language | en |
| publishDate | 2014 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Particle Acceleration by Shocks in Supernova Remnants Anthony Raymond Bell Física, Astronomía y Matemáticas Cosmic rays Magnetic field Supernova remnants Particle acceleration Particle Acceleration by Shocks in Supernova Remnants Anthony Raymond Bell Física, Astronomía y Matemáticas Cosmic rays Magnetic field Supernova remnants Particle acceleration Abstract Particle acceleration occurs on a range of scales from AU in the heliosphere to Mpc in clusters of galaxies and to energies ranging from MeV to exaelectronvolt (EeV). A number of acceleration processes have been proposed, but diffusive shock acceleration (DSA) is widely invoked as the predominant mechanism. DSA operates on all these scales and probably to the highest energies. DSA is simple, robust and predicts a universal spectrum. However, there are still many unknowns regarding particle acceleration. This paper focuses on the particular question of whether supernova remnants (SNR) can produce the Galactic cosmic ray (CR) spectrum up to the knee at a few petaelectronvolt (PeV). The answer depends in large part on the detailed physics of diffusive shock acceleration. 2014 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46432476001 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.5 Vol.44 |
| title | Particle Acceleration by Shocks in Supernova Remnants |
| topic | Física, Astronomía y Matemáticas Cosmic rays Magnetic field Supernova remnants Particle acceleration |
| url | https://www.redalyc.org/articulo.oa?id=46432476001 |