The proton distribution function in weakly magnetized turbulent plasmas

被引：9
|
作者：
Gruzinov, A [1 ]
Quataert, E
机构：
[1] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA
[2] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
来源：
ASTROPHYSICAL JOURNAL | 1999年 / 520卷 / 02期
关键词：
MHD; plasmas; turbulence;
D O I：
10.1086/307472
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We calculate the proton distribution function due to heating by subsonic, Alfvenic turbulence in a weakly magnetized collisionless plasma. The distribution function is nonthermal. For nonrelativistic energies it is an exponential of the magnitude of the proton velocity. For ultrarelativistic energies, it can be characterized as a power law with a momentum-dependent slope. We briefly discuss the implications of this work for gamma-ray emission (via pion decay) from hot accretion flows.
引用
收藏
页码：849 / 852
页数：4
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