中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
An analysis of a solar active region that produced many CMEs

文献类型:期刊论文

作者Xia ZG(夏志国)1,2; Wang M(汪敏)1,2; Zhang BR(张柏荣)1,2; Yang, YH2
刊名CHINESE ASTRONOMY AND ASTROPHYSICS
出版日期2002-04
卷号26期号:2页码:164-171
关键词solar radio emission coronal mass ejection soft X-ray burst
ISSN号0275-1062
产权排序第一完成单位
通讯作者Xia, ZG (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China.
英文摘要In April and May of 1998, six large burst events occurred one after the other in the active region AR8210. We have collected the data of this active region, including its soft X-rays, ultraviolet radiation, radio type-II and -IV bursts as well as its radioheliograph observations. It is found that the process of energy accumulation was rapid and the time profiles of three soft X-ray bursts exhibited a certain similarity. When coronal mass ejections (CMEs) took place, the magnetic loops in this active region were only partially open and they soon contracted to become a closed loop. Under the bombardment of nonthermal electrons, the active region was again heated and it produced intense X-ray bursts as well as type-II and -IV bursts. The weak part of the magnetic loop was like a volcanic crater from which CMEs can easily erupt again. The turn-off point, where non-thermal and thermal processes intersect, was found: on the SXR time profile it is a point of sudden change of slope, and type-III bursts, that successively occur in various layers of the corona, may be taken to be convincing evidence of the occurrence of CMEs and also a criterion for estimating the velocity of the CMEs.
WOS标题词Science & Technology ; Physical Sciences
学科主题Astronomy & Astrophysics
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTIONS ; FLUX-ROPE MODELS ; BURSTS
收录类别SCI
原文出处http://www.sciencedirect.com/science/article/pii/S0275106202000541
语种英语
WOS记录号WOS:000176345300005
源URL[http://ir.ynao.ac.cn/handle/114a53/5606]  
专题云南天文台_射电天文研究组
作者单位1.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
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Xia ZG,Wang M,Zhang BR,et al. An analysis of a solar active region that produced many CMEs[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2002,26(2):164-171.
APA Xia ZG,Wang M,Zhang BR,&Yang, YH.(2002).An analysis of a solar active region that produced many CMEs.CHINESE ASTRONOMY AND ASTROPHYSICS,26(2),164-171.
MLA Xia ZG,et al."An analysis of a solar active region that produced many CMEs".CHINESE ASTRONOMY AND ASTROPHYSICS 26.2(2002):164-171.

入库方式: OAI收割

来源:云南天文台

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