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题名: H-ALPHA FILTERGRAM OBSERVATIONS OF ELLERMAN BOMBS AND ITS MAGNETIC RECONNECTION MODEL
作者: HU, FM ; SONG, MT ; LI, XQ
刊名: ASTROPHYSICS AND SPACE SCIENCE
出版日期: 1995
卷号: 229, 期号:2, 页码:325—339
学科分类: 天文和天体物理
英文摘要: From the H-alpha filtergram observations obtained at Ganyu station, identification and statistic works made for Ellerman bombs, it is found that they often occur in the superpenumbra area of a mature sunspot. We suggest a plasmoid model to account for the basic properties of a typical bomb: lifetime 11 min, diameter similar to 5 x 10(7) cm, accompanying jet velocity similar to 40 km/s, total energy similar to 10(27) erg, Te similar to 10(4) K. First, a numerical simulation is made to prove that plasmoids can be lifted from the solar convective zone by magnetic buoyancy. Between the plasmoid and its surroundings a strong current sheet builds up in which a peculiar MHD (with plasma ponderamotive force) - resistive instability takes place. After the magnetic reconnection has begun, a local explosive instability ensues whose growth rate is so high that it allows the exhaustion of the 'high temperature' particles from the sheet in a short period. In this way, the temperature of a bomb may be kept unchanged or only rise slightly.
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/8488
Appears in Collections:期刊(老文献)_期刊论文

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Recommended Citation:
HU, FM; SONG, MT; LI, XQ.H-ALPHA FILTERGRAM OBSERVATIONS OF ELLERMAN BOMBS AND ITS MAGNETIC RECONNECTION MODEL,ASTROPHYSICS AND SPACE SCIENCE,1995,229(2):325—339
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文件名: 1995018H-ALPHA FILTERGRAM OBSERVATIONS OF ELLERMAN BOMBS AND ITS MAGNETIC RECONNECTION MODEL.pdf
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