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Magnetic field amplification by cosmic rays in supernova remnants

Abstract:

Magnetic field amplification is needed to accelerate cosmic cays to PeV energies in supernova remants. Escaping cosmic rays trigger a return current in the plasma that drives a non-resonant hybrid instability. We run simulations in which we represent the escaping cosmic rays with the plasma return current, keeping the maximum cosmic ray energy fixed, and evaluate its effects on the upstream medium. In addition to magnetic field amplification, density perturbations arise that, when passing thr...

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Publication status:
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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
Volume:
470
Pages:
209-214
Host title:
370 YEARS OF ASTRONOMY IN UTRECHT
Publication date:
2012-09-13
Source identifiers:
430339
ISBN:
9781583818244
Keywords:
Pubs id:
pubs:430339
UUID:
uuid:37f120fb-22b0-4e70-9460-44e612fdd877
Local pid:
pubs:430339
Deposit date:
2013-11-17

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