期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 879, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/ab2a15
关键词
acceleration of particles; galaxies: jets; magnetic reconnection; relativistic processes; gamma-ray burst: general; pulsars: general
资金
- DOE through the LDRD program at LANL
- DoE/OFES
- NASA ATP program [NNH17AE68I]
- NASA [NNH16AC60I]
- LANL through its Center for Space and Earth Science (CSES)
- LANL's Laboratory Directed Research and Development (LDRD) program [20180475DR]
While a growing body of research indicates that relativistic magnetic reconnection is a prodigious source of particle acceleration in high-energy astrophysical systems, the dominant acceleration mechanism remains controversial. Using a combination of fully kinetic simulations and theoretical analysis, we demonstrate that Fermi-type acceleration within the large-scale motional electric fields dominates over direct acceleration from non-ideal electric fields within small-scale diffusion regions. This result has profound implications for modeling particle acceleration in large-scale astrophysical problems, as it opens up the possibility of modeling the energetic spectra without resolving microscopic diffusion regions.
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