TERRAPUB Earth, Planets and Space

Earth Planets Space, Vol. 53 (No. 6), pp. 611-614, 2001

Global destabilization due to localized reconnection: A mechanism for coronal mass ejections

P. F. Chen1,2, K. Shibata2, and T. Yokoyama3

1Department of Astronomy, Nanjing University, Nanjing 210093, China,
2Kwasan Observatory, Kyoto University, Kyoto 607-8471, Japan
3Nobeyama Radio Observatory, National Astronomical Observatory, Japan

(Received June 19, 2000; Revised November 27, 2000; Accepted February 20, 2001)

Abstract: Solar CMEs are large scale eruptive phenomena, while flux emergence is a local event on the Sun. Our numerical simulations show that two categories of reconnection-favored emerging flux can trigger the destabilization and the ejection of the filament (i.e., CME): within the filament channel or on the outer edge of the channel, which confirms recent important observations by Feynman and Martin (1995). In particular for the latter category, numerical results show that there is a critical amount for the emerging flux, below which the flux rope eruption cannot be triggered. Our numerical model, for the first time, provides a physical explanation for the observed correlation between CMEs and the reconnection-favored emerging flux.

Corresponding author E-mail: chenpf@nju.edu.cn

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