OBSERVATIONS OF A SMALL INTERPLANETARY MAGNETIC FLUX ROPE ASSOCIATED WITH A MAGNETIC RECONNECTION EXHAUST

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	OBSERVATIONS OF A SMALL INTERPLANETARY MAGNETIC FLUX ROPE ASSOCIATED WITH A MAGNETIC RECONNECTION EXHAUST
	Feng, H. Q.1,2; Wu, D. J.3
刊名	ASTROPHYSICAL JOURNAL
	2009-11-10
卷号	705 期号:2 页码:1385-1387
关键词	solar-terrestrial relations solar wind Sun: magnetic fields
ISSN号	0004-637X
英文摘要	A small interplanetary magnetic flux rope prior to an X-line magnetic reconnection exhaust was observed on 1998 March 25 at 1 AU. The X-line magnetic reconnection exhaust has been identified and reported by Gosling et al. The duration of this small magnetic flux rope is about 2 hr. We fitted the constant alpha force-free model to the observed magnetic fields. The model fitting results show that the spacecraft crosses the magnetic flux rope well away from the axis, with d(0)/R-0 being 0.76. The fitting results also show that its magnetic configuration is a right-handed helical flux rope, that the estimated field intensity at the axis is 16.3 nT, and that its diameter is 0.0190 AU. In addition, the axial direction of this rope is (theta = 6 degrees, theta = 214 degrees), namely, this magnetic flux rope is lying nearly in the ecliptic plane. According to the geometric relation of the small flux rope and the reconnection exhaust, it is very possible that the small magnetic flux rope has a larger scale initially and comes from the corona; its magnetic fields are peeled off when moving from the Sun to the Earth and at last it reaches a small scale. Though magnetic reconnection can produce a flux-rope topology, in this case the X-line magnetic reconnection is destroying rather than generating the small magnetic flux rope.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	HELIOSPHERIC CURRENT SHEET ; SOLAR-WIND ; 1 AU ; CLOUDS ; EJECTION ; ULYSSES ; PLASMA
收录类别	SCI
语种	英语
WOS记录号	WOS:000271149700025
公开日期	2011-12-08
内容类型	期刊论文
源URL	[http://159.226.72.40/handle/332002/1513]
专题	紫金山天文台_太阳和太阳系等离子体研究团组
作者单位	1.Luoyang Normal Univ, Coll Phys & Elect Sci, Luoyang, Peoples R China 2.Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing, Peoples R China 3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Feng, H. Q.,Wu, D. J.. OBSERVATIONS OF A SMALL INTERPLANETARY MAGNETIC FLUX ROPE ASSOCIATED WITH A MAGNETIC RECONNECTION EXHAUST[J]. ASTROPHYSICAL JOURNAL,2009,705(2):1385-1387.
APA	Feng, H. Q.,&Wu, D. J..(2009).OBSERVATIONS OF A SMALL INTERPLANETARY MAGNETIC FLUX ROPE ASSOCIATED WITH A MAGNETIC RECONNECTION EXHAUST.ASTROPHYSICAL JOURNAL,705(2),1385-1387.
MLA	Feng, H. Q.,et al."OBSERVATIONS OF A SMALL INTERPLANETARY MAGNETIC FLUX ROPE ASSOCIATED WITH A MAGNETIC RECONNECTION EXHAUST".ASTROPHYSICAL JOURNAL 705.2(2009):1385-1387.