Electron Heating at SNR Collisionless Shocks
Electron Heating at SNR Collisionless Shocks
复制标题
SNR 无碰撞冲击下的电子加热
DOI:
10.1086/313325
复制
发表时间:
2000
期刊:
影响因子:
--
通讯作者:
J. Laming
中科院分区:
文献类型:
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作者:
J. Laming
The hot gas in supernova remnants is heated by collisionless shocks, generally propagating in low density (∼ 1 atom cm-3 media), where the shock transition occurs on a length scale much shorter than the typical particle mean free path to Coulomb collisions. Conservation laws for energy, momentum, and particle numbers across the shock predict postshock particle temperatures proportional to their masses, that is, electron temperature ≪ ion temperature. Electrons and ions will, of course, equilibrate by Coulomb collisions, but collisionless processes might bring about faster equilibration. I review theoretical and observational work on this important point and speculate on reasons for discrepancies where they exist.
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Katsuda;Satoru; Maeda;Keiichi; Ohira;Yutaka; et al.
通讯作者:
Yutaka; et al.