CORRELATION OF ELECTRON PATH LENGTHS OBSERVED IN THE HIGHLY WOUND OUTER   REGION OF MAGNETIC CLOUDS WITH THE SLAB FRACTION OF MAGNETIC TURBULENCE   IN THE DISSIPATION RANGE

doi:10.1088/0004-637X/786/2/122

CORC > 北京大学 > 地球与空间科学学院

	CORRELATION OF ELECTRON PATH LENGTHS OBSERVED IN THE HIGHLY WOUND OUTER REGION OF MAGNETIC CLOUDS WITH THE SLAB FRACTION OF MAGNETIC TURBULENCE IN THE DISSIPATION RANGE
	Tan, Lun C. ; Reames, Donald V. ; Ng, Chee K. ; Shao, Xi ; Wang, Linghua
刊名	astrophysical journal
	2014
关键词	Sun: coronal mass ejections (CMEs) Sun: flares Sun: magnetic fields Sun: particle emission turbulence SOLAR-WIND TURBULENCE CORONAL MASS EJECTIONS ENERGETIC PARTICLES CHARGED-PARTICLES OCTOBER 18-20 JANUARY 1997 FIELD PLASMA FLUCTUATIONS SPACECRAFT
DOI	10.1088/0004-637X/786/2/122
英文摘要	Three magnetic cloud events, in which solar impulsive electron events occurred in their outer region, are employed to investigate the difference of path lengths L-0eIII traveled by non-relativistic electrons from their release site near the Sun to the observer at 1 AU, where L-0eIII = v(1) x (t(1) - t(III)), v(1) and t(1) being the velocity and arrival time of electrons in the lowest energy channel (similar to 27 keV) of the Wind/3DP/SST sensor, respectively, and t(III) being the onset time of type III radio bursts. The deduced L0eIII value ranges from 1.3 to 3.3 AU. Since a negligible interplanetary scattering level can be seen in both L-0eIII > 3 AU and similar to 1.2 AU events, the difference in L-0eIII could be linked to the turbulence geometry (slab or two-dimensional) in the solar wind. By using the Wind/MFI magnetic field data with a time resolution of 92 ms, we examine the turbulence geometry in the dissipation range. In our examination, similar to 6 minutes of sampled subintervals are used in order to improve time resolution. We have found that, in the transverse turbulence, the observed slab fraction is increased with an increasing L-0eIII value, reaching similar to 100% in the L-0eIII > 3 AU event. Our observation implies that when only the slab spectral component exists, magnetic flux tubes (magnetic surfaces) are closed and regular for a very long distance along the transport route of particles.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000335884500046&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Astronomy & Astrophysics; SCI(E); 3; ARTICLE; ltan@umd.edu; 2; 786
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/212754]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Tan, Lun C.,Reames, Donald V.,Ng, Chee K.,et al. CORRELATION OF ELECTRON PATH LENGTHS OBSERVED IN THE HIGHLY WOUND OUTER REGION OF MAGNETIC CLOUDS WITH THE SLAB FRACTION OF MAGNETIC TURBULENCE IN THE DISSIPATION RANGE[J]. astrophysical journal,2014.
APA	Tan, Lun C.,Reames, Donald V.,Ng, Chee K.,Shao, Xi,&Wang, Linghua.(2014).CORRELATION OF ELECTRON PATH LENGTHS OBSERVED IN THE HIGHLY WOUND OUTER REGION OF MAGNETIC CLOUDS WITH THE SLAB FRACTION OF MAGNETIC TURBULENCE IN THE DISSIPATION RANGE.astrophysical journal.
MLA	Tan, Lun C.,et al."CORRELATION OF ELECTRON PATH LENGTHS OBSERVED IN THE HIGHLY WOUND OUTER REGION OF MAGNETIC CLOUDS WITH THE SLAB FRACTION OF MAGNETIC TURBULENCE IN THE DISSIPATION RANGE".astrophysical journal (2014).