Insights into Cosmic-Ray Acceleration from the Study of Anomalous Cosmic Rays

被引：0
作者：
J.R. Jokipii
机构：
[1] The University of Arizona,
来源：
Space Science Reviews | 1998年 / 86卷
关键词：
Solar Wind; Current Sheet; Termination Shock; Sunspot Minimum; Diffusive Shock Acceleration;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Cosmic rays from many sources and in many locations exhibit similar, inverse-power-law energy spectra, which suggests a common origin for most cosmic rays. Diffusive shock acceleration appears at present to be this common accelerator. Hence, anomalous cosmic rays, thought to be accelerated at the solar-wind termination shock, provide a relatively accessible laboratory for the study of the mechanism of cosmic-ray acceleration. Observations showing a transition from singly-charged anomalous cosmic-ray oxygen to multiply-charged at an energy of some 250 MeV support the picture of acceleration at the quasi-perpendicular termination shock. Such acceleration may be important in other sources, as well. The basic physics of this acceleration process is discussed in some detail.
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页码：161 / 178
页数：17
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