标题:The Acceleration of Electrons at a Spherical Coronal Shock in a Streamer-like Coronal Field
作者:Kong, Xiangliang; Chen, Yao; Guo, Fan
通讯作者:Kong, X(kongx@sdu.edu.cn)
作者机构:[Kong, Xiangliang; Chen, Yao] Shandong Univ, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Shandong, Peoples R China.; [Kong, Xi 更多
会议名称:14th International Solar Wind Conference (Solar Wind)
会议日期:JUN 22-26, 2015
来源:PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL SOLAR WIND CONFERENCE (SOLAR WIND 14)
出版年:2016
卷:1720
DOI:10.1063/1.4943840
摘要:We study the effect of large-scale coronal magnetic field on the electron acceleration at a spherical coronal shock using a test-particle method. The coronal field is approximated by an analytical solution with a streamer-like magnetic field featured by partially open magnetic field and a current sheet at the equator atop the closed region. It shows that the closed field plays the role of a trapping agency of shock-accelerated electrons, allowing for repetitive reflection and acceleration, therefore can greatly enhance the shock-electron acceleration efficiency. It is found that, with an ad hoc pitch-angle scattering, electron injected in the open field at the shock flank can be accelerated to high energies as well. In addition, if the shock is faster or stronger, a relatively harder electron energy spectrum and a larger maximum energy can be achieved.
收录类别:CPCI-S;SCOPUS
资源类型:会议论文;期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84984548736&doi=10.1063%2f1.4943840&partnerID=40&md5=8893b5f4d21cb4121a27a702e95ba5ec
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