Direct observations of the formation of the solar wind halo from the strahl

被引：27

作者：

Gurgiolo, C. ^{[1
]}

Goldstein, M. L. ^{[2
]}

Vinas, A. F. ^{[2
]}

Fazakerley, A. N. ^{[3
]}

机构：

[1] Bitterroot Basic Res, Hamilton, MT 59840 USA

[2] NASA, Geospace Sci Lab, Code 673, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England

来源：

ANNALES GEOPHYSICAE | 2012年 / 30卷 / 01期

关键词：

Interplanetary physics; Solar wind plasma; Sources of the solar wind; Space plasma physics; Wave-particle interactions; ELECTRON-DISTRIBUTION FUNCTIONS; HELIOS PLASMA-EXPERIMENT; SUPRATHERMAL ELECTRONS; WAVES; DISTRIBUTIONS; CORONA;

D O I：

10.5194/angeo-30-163-2012

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Observations of a continual erosion of the strahl and build up of the halo with distance from the sun suggests that, at least in part, the halo may be formed as a result of scattering of the strahl. This hypothesis is supported in this paper by observation of intense scattering of strahl electrons, which gives rise to a proto-halo electron population. This population eventually merges into, or becomes the halo. The fact that observations of intense scattering of the strahl are not common implies that the formation of the halo may not be a continuous process, but one that occurs, in part, in bursts in regions where the conditions responsible for the scattering are optimum.

引用

页码：163 / 175

页数：13

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