Evidence for internal tether-cutting in a flare/coronal mass ejection observed by MESSENGER, RHESSI, and STEREO

Claire L. Raftery, Peter T. Gallagher, R. T.James McAteer, Chia Hsien Lin, Gareth Delahunt

研究成果: 雜誌貢獻期刊論文同行評審

13 引文 斯高帕斯(Scopus)

摘要

The relationship between eruptive flares and coronal mass ejections (CMEs) is a topic of ongoing debate, especially regarding the possibility of a common initiationmechanism.We studied the kinematic and hydrodynamic properties of a well-observed event that occurred on 2007 December 31 using data from MESSENGER, RHESSI, and STEREO in order to gain new physical insight into the evolution of the flare and CME. The initiation mechanism was determined by comparing observations to the internal tether-cutting, breakout, and ideal magnetohydrodynamic (MHD) models. Evidence of pre-eruption reconnection immediately eliminated the ideal MHD model. The timing and location of the soft and hard X-ray sources led to the conclusion that the event was initiated by the internal tether-cutting mechanism. In addition, a thermal source was observed to move in a downward direction during the impulsive phase of the event, followed by upward motion during the decay phase, providing evidence for X- to Y-type magnetic reconnection.

原文???core.languages.en_GB???
頁(從 - 到)1579-1584
頁數6
期刊Astrophysical Journal
721
發行號2
DOIs
出版狀態已出版 - 1 10月 2010

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