Interplanetary acceleration of coronal mass ejections

被引：429

作者：

Gopalswamy, N

Lara, A

Lepping, RP

Kaiser, ML

Berdichevsky, D

St Cyr, OC

机构：

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[2] Catholic Univ Amer, Washington, DC 20064 USA

[3] Raytheon ITSS, Lanham, MD 20740 USA

[4] USN, Res Lab, Washington, DC 20375 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2000年 / 27卷 / 02期

关键词：

D O I：

10.1029/1999GL003639

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Using an observed relation between speeds of CMEs near the Sun and in the solar wind, we determine an "effective" acceleration acting on the CMEs. We found a linear relation between this effective acceleration and the initial speed of the CMEs. The acceleration is similar to that of the slow solar wind in magnitude. The average solar wind speed naturally divides CMEs into fast and slow ones. Based on the relation between the acceleration and initial speed, we derive an empirical model to predict the arrival of CMEs at 1 AU.

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页码：145 / 148

页数：4

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