Stochastic electron acceleration during spontaneous turbulent reconnection in a strong shock wave
Explosive phenomena such as supernova remnant shocks and solar flares have demonstrated evidence for the production of relativistic particles. Interest has therefore been renewed in collisionless shock waves and magnetic reconnection as a means to achieve such energies. Although ions can be energize...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2015-02, Vol.347 (6225), p.974-978 |
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| container_issue | 6225 |
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| container_title | Science (American Association for the Advancement of Science) |
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| creator | Matsumoto, Y. Amano, T. Kato, T. N. Hoshino, M. |
| description | Explosive phenomena such as supernova remnant shocks and solar flares have demonstrated evidence for the production of relativistic particles. Interest has therefore been renewed in collisionless shock waves and magnetic reconnection as a means to achieve such energies. Although ions can be energized during such phenomena, the relativistic energy of the electrons remains a puzzle for theory. We present supercomputer simulations showing that efficient electron energization can occur during turbulent magnetic reconnection arising from a strong collisionless shock. Upstream electrons undergo first-order Fermi acceleration by colliding with reconnection jets and magnetic islands, giving rise to a nonthermal relativistic population downstream. These results shed new light on magnetic reconnection as an agent of energy dissipation and particle acceleration in strong shock waves. |
| doi_str_mv | 10.1126/science.1260168 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 0036-8075 |
| ispartof | Science (American Association for the Advancement of Science), 2015-02, Vol.347 (6225), p.974-978 |
| issn | 0036-8075 1095-9203 |
| language | eng |
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| source | Jstor Complete Legacy; Science Magazine |
| subjects | Acceleration Activation Charged particles Electrons Fluid dynamics Physics Shock layers Shock waves Stochastic models Turbulence Turbulent flow |
| title | Stochastic electron acceleration during spontaneous turbulent reconnection in a strong shock wave |
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