LASCO and EIT observations of helical structure in coronal mass ejections

被引：200

作者：

Dere, KP ^{[1
]}

Brueckner, GE

Howard, RA

Michels, DJ

Delaboudiniere, JP

机构：

[1] USN, Res Lab, EO Hulburt Ctr Space Res, Washington, DC 20375 USA

[2] Univ Paris 11, Inst Astrophys Spatiale, F-91405 Orsay, France

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 516卷 / 01期

关键词：

Sun : activity; Sun : corona; Sun : magnetic fields; Sun : particle emission;

D O I：

10.1086/307101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Observations of coronal mass ejections (CMEs) by the Large Angle Spectrometric Coronagraph (LASCO) on the Solar and Heliospheric Observatory (SOHO) show a significant fraction with circular intensity patterns. In the past, these would have been called "disconnection" events, but we suggest that these are evidence of CMEs containing helical magnetic flux ropes that are often central to many theoretical models of CMEs and have been observed in magnetic clouds near 1 AU. Three examples are examined in detail with the LASCO and Extreme-Ultraviolet Imaging Telescope (EIT) data sets, which provide observations from their initiation through 30 R..

引用

页码：465 / 474

页数：10

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