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米波Ⅲ型爆发与日冕物质抛射
  • ISSN号:0254-6124
  • 期刊名称:《空间科学学报》
  • 时间:0
  • 分类:P353[天文地球—空间物理学;天文地球—地球物理学]
  • 作者机构:[1]中国科学院国家天文台/云南天文台,昆明650011, [2]中国科学院紫金山天文台
  • 相关基金:国家重点基金项目(10333030)和国家自然科学基金项目(10473020)共同资助
中文摘要:

对澳大利亚Culgoora天文台射电频谱仪在太阳活动第23周峰年期间记录到的米波Ⅲ型爆发(20-420MHz),与日冕物质抛射(CME)、Hα耀斑及相关事件进行了统计分析,发现米波Ⅲ型爆发与CME的关系没有Ⅱ、Ⅳ型爆发与CME的关系密切;米波Ⅲ型爆发发生的时间在CME之前25-30min最多;72%的CME事件伴随长寿命的Hα耀斑.从这些观测特征出发,对米波Ⅲ型爆发、CME和Hα耀斑进行了定性的解释.

英文摘要:

Statistical analyses of the correlation events between the type Ⅲ radio bursts and Coronal Mass Ejections (CMEs) during 23rd cycle are presented, radio data were observed with the 20-420 MHz at the Radio Spectrograph Culgoora Solar Observatory in Australia. It is found that the relation between the decimetric type Ⅲ bursts and CMEs is not closer than the relation between the type Ⅱ radio bursts and CMEs. Most of metric type Ⅲ radio bursts occurred 25-30 min before CME, and about 72% CMEs events correlated with gradual flares. Meanwhile, the higher energy of theflare corresponds to the larger initial velocity of the correlated CMEs. As for impulsive flares, the type Ⅲ bursts are produced probably owing to the ejection of high energy electronic beam from the open magnetic line of force. And around the electronic beam and along the open magnetic line of force there simultaneously ejects a plasma block mass, which just form a small-scale CME. In this way, the type Ⅲ burst and CME occur in the same flare. As for gradual flare, a prominence is formed possibly owing to the uninterrupted upward floatation of the magnetic flux tube in the flare. The ejection matter of the prominence produces the large-scale CME, but on the edge of the magnetic flux loop there exists the open magnetic field line, the energetic electronic beam can eject and produce type Ⅲ bursts.

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期刊信息
  • 《空间科学学报》
  • 北大核心期刊(2011版)
  • 主管单位:中国科学院
  • 主办单位:中科院空间中心
  • 主编:吴季
  • 地址:北京8701信箱
  • 邮编:100190
  • 邮箱:cjss@nssc.ac.cn
  • 电话:010-62582788
  • 国际标准刊号:ISSN:0254-6124
  • 国内统一刊号:ISSN:11-1783/V
  • 邮发代号:2-562
  • 获奖情况:
  • 核心期刊,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘(网络版),英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:3704