Energetic Particle Acceleration in the Heliosphere

被引：5

作者：

Fisk, L. A. ^{[1
]}

Gloeckler, G. ^{[1
]}

机构：

[1] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA

来源：

PHYSICS OF THE HELIOSPHERE: A 10 YEAR RETROSPECTIVE | 2012年 / 1436卷

基金：

美国国家科学基金会;

关键词：

Heliosphere; Heliosheath; Particle Acceleration; STOCHASTIC ACCELERATION; SOLAR-WIND; DISTRIBUTIONS; HELIOSHEATH;

D O I：

10.1063/1.4723598

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

There has been a remarkable discovery in the heliosphere. Ions accelerated in disparate plasma conditions - the quiet solar wind, disturbed conditions downstream from shocks, and throughout the heliosheath - all have the same spectrum, a power law with spectral index of -5 when expressed as a distribution function. An acceleration mechanism has been developed that can account for these observations, a pump mechanism, in which particles are pumped out of a core distribution through a series of compressions and expansions. The derivation of the governing equation of the pump mechanism and some important subtleties in the derivation are discussed.

引用

页码：116 / 123

页数：8

共 50 条

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