期刊
ASTROPHYSICAL JOURNAL
卷 873, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/ab0462
关键词
acceleration of particles; ISM: magnetic fields; ISM: supernova remnants
资金
- Deutsche Forschungsgemeinschaft
- Defense Threat Reduction Agency
- Max-Planck/Princeton Center for Plasma Physics
- NERSC, a U.S. Department of Energy Office of Science User Facility [DE-AC02-05CH11231]
Motivated by recent advances in laboratory experiments on parallel ion-beam instabilities, we present a theoretical framework for-and simulations of-their evolution toward shock formation and Fermi acceleration. After reviewing the linear theory of beam instabilities, with an emphasis on how magnetic helicity and polarization depend on properties of the beam, we compare the evolution and saturation of three distinct parameter regimes: (I) the left-handed non-resonant regime; (II) the right-handed beam-gyroresonant regime; (III) the balanced, mixedturbulence regime.
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