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A fast current-driven instability in relativistic collisionless shocks

Abstract : We report here on a fast current-driven instability at relativistic collisionless shocks, triggered by the perpendicular current carried by the supra-thermal particles as they gyrate around the background magnetic field in the shock precursor. We show that this instability grows faster than any other instability studied so far in this context, and we argue that it is likely to shape the physics of the shock and of particle acceleration in a broad parameter range.
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https://hal-insu.archives-ouvertes.fr/insu-03618571
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Submitted on : Thursday, March 24, 2022 - 2:09:37 PM
Last modification on : Tuesday, May 31, 2022 - 2:28:02 PM

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Martin Lemoine, Guy Pelletier, Laurent Gremillet, Illya Plotnikov. A fast current-driven instability in relativistic collisionless shocks. Europhysics Letters, 2014, 106, ⟨10.1209/0295-5075/106/55001⟩. ⟨insu-03618571⟩

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