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Helios飞船观测到的行星际日冕物质抛射事件
Alternative TitleTHE INTERPLANETARY MASS EJECTIONS OBSERVED BY HELIOS
杜丹; 李昌兴; 王赤; 北京8701信箱
Department空间天气学国家重点实验室
Source Publication空间科学学报
2004
Volume24Issue:6Pages:421-433
ISSN0254-6124
Language中文
Keyword行星际 日冕物质抛射 观测数据 飞船 异常 演化规律 事件
Abstract根据异常低的质子温度判据,从Heliosl和2飞船等离子体观测数据中(0.3-1AU)识别出大约160个行星际日冕物质抛射事件(ICME),并在统计意义上分析了ICME在内日球空间的传播和演化规律.
Other AbstractUsing abnormally low proton temperature as the primary identification signa-ture of interplanetary mass ejections (ICME),about 160 probable ICME observed by Helios 1 and 2 between 0.3 AU and 1 AU have been identified. The resulting list of events enables us to study the radial evolution of ICME in a statistical sense.The occurrence rate of ICME approximately follows the solar activity cycle.ICME expand during propagation in the solar wind;the radial width inerease with distance as R0.64.The radial expansion speed of the ICME is of order of the Alfven speed. The average temneratur and magneic field mangnitude inside ICME decrease faster with distance than the ambient solar wind, as expected for an ex-pandirz; structure.the relareatively slowe decrease of temperature with distance than the adiah;e,tic expansion solar wind implies a substantial heating of the ejecta.The average bulk speed of ICME remains constant with distance between 0.3 and 1 AU.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1312
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
杜丹,李昌兴,王赤,等. Helios飞船观测到的行星际日冕物质抛射事件[J]. 空间科学学报,2004,24(6):421-433.
APA 杜丹,李昌兴,王赤,&北京8701信箱.(2004).Helios飞船观测到的行星际日冕物质抛射事件.空间科学学报,24(6),421-433.
MLA 杜丹,et al."Helios飞船观测到的行星际日冕物质抛射事件".空间科学学报 24.6(2004):421-433.
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