Particle acceleration in impulsive solar flares

被引：105

作者：

Miller, JA ^{[1
]}

机构：

[1] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA

来源：

SPACE SCIENCE REVIEWS | 1998年 / 86卷 / 1-4期

关键词：

D O I：

10.1023/A:1005066209536

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the major observationally-derived requirements for a solar flare particle acceleration mechanism, briefly discuss some general electrodynamic constraints that also need to be considered, and suggest a unified electron and ion acceleration theory. This theory consists of two elements: cascading MHD turbulence generated at large scales during the primary flare energy release, which is responsible for the energization of electrons and all ions except He-3, and an electron beam, which excites the waves necessary for He-3 acceleration. An issue cf special importance for understanding ion acceleration is the convincing measurement of the charge state of Fe, which can be accomplished by the Advanced Composition Explorer in the upcoming solar maximum.

引用

页码：79 / 105

页数：27

共 63 条

[1] Electron densities in solar flare loops, chromospheric evaporation upflows, and acceleration sites [J].