不同速度日冕物质抛射的多波段射电观测特征
Observational Characteristics of Multi-wavelength Radio Emissions Associated with Different Velocities of Solar Coronal Mass Ejection
查看参考文献24篇
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文摘
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比较了12个日冕物质抛射(CME)事件, 发现它们可以分为两类, 其中分别是快速(＞1000 km/s)和慢速(≤800 km/s)各6个事件, 发现这2类CME事件分别对应于不同的多波段射电辐射类型和不同的日冕磁位形.本文定性地分析了这二个类型的射电爆发的产生过程,指出多重磁极和双磁极结构可能是分别产生二类CME和二类多波段射电爆发类型的原因,并涉及到"磁崩溃"模型与多重磁结构的关系.讨论了CME的不同速度可能是造成多波段不同射电爆发的主要因素,并指出快速或慢速的CME可能取决于日冕的多重或双重磁结构. |
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其他语种文摘
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12 Solar Coronal Mass Ejection(CME)events are compared.It is found that 6,out of 12 events,are fast(>1000 km/s)CMEs and 6,out of 12 events,are slow(≤800 km/s)CMEs.In particular,It is found that two types of CMEs are corresponding to the different types of multi-wavelength radio emissions,and to the different coronal magnetic configurations,respectively.In this paper,the producing processes of radio bursts with different types are analyzed qualitatively.The multi-polar and bi-polar magnetic structures are indicated,and they are likely to be the causes produced the two types of CMEs and the different types of multi-wavelength radio burst,respectively.The correlation between the "magnetic breakout" model for CME initiation/flare triggering and the multi-polar magnetic structure is concerned.The different velocities of CMEs may be the key factor causing different types of multi-wavelength radio bursts,and the fast or slow CMEs may be attributed to the multi-polar or bi-polar coronal magnetic structures. |
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来源
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天文研究与技术
,2008,5(1):13-20 【核心库】
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关键词
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太阳
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CME
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射电爆发
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日冕磁结构
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地址
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1.
国科学院国家天文台云南天文台, 云南, 昆明, 650011
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云南广播电视大学, 云南, 昆明, 650023
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1672-7673 |
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学科
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天文学 |
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基金
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国家973计划
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国家自然科学基金
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中国科学院西部之光人才培养计划
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文献收藏号
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CSCD:3282453
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24
共2页
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