Cosmic-ray modulation and the heliospheric magnetic field

被引:11
作者
Burger, RA [1 ]
机构
[1] NW Univ, Unit Space Phys, ZA-2520 Potchefstroom, South Africa
来源
HELIOSPHERIC COSMIC RAY TRANSPORT, MODULATION AND TURBULENCE | 2005年 / 35卷 / 04期
关键词
cosmic rays; heliospheric magnetic field; fisk-type fields;
D O I
10.1016/j.asr.2005.01.080
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
The heliospheric magnetic field plays a key role in any model for the modulation of cosmic rays. It enters into all diffusion coefficients, and its magnitude, spatial gradient and direction determine drifts patterns of cosmic rays in the heliosphere. While the first axisymmetric model of E.N. Parker proved quite successful to explain in situ measurements in the ecliptic plane, new insight into the origin and the nature of the field, especially at high heliographic latitudes, has led to the development of complex fully-three-dimensional, time-dependent models. In this review, we discuss a selection of models for the heliospheric magnetic field, and discuss how some of the more recent Fisk-type models affect the modulation of cosmic rays. (c) 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:636 / 642
页数:7
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