AAS 204th Meeting, June 2004
Session 18 Coronal Mass Ejections
SPD Oral, Monday, May 31, 2004, 10:00-11:30am, 704

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[18.05] Quiet-Region Filament Eruptions

D. P. Choudhary, R. L. Moore (NASA/Marshall Space Flight Center)

We report characteristics of quiescent filament eruptions that did not produce coronal mass ejections (CMEs). It is known that there is a dichotomy of quiescent filament eruptions: those that produce CMEs and those that do not. We examined the quiescent filament eruptions, each of which was located far from disk center (>/= 0.7 RSun) in diffuse remnant magnetic fields of decayed active regions, was well observed in Halpha observations and Fe XII, and had good coronagraph coverage. We present the similarity and differences of two classes of filament eruptions. From their lack of CME production and the appearance of their eruptive motion in Fe XII movies, we conclude that the non-CME-producing filament eruptions are confined eruptions like the confined filament eruptions in active regions. We take the similarity of the confined and eruptive quiescent filament eruptions with their active-region counterparts to favor runaway tether-cutting reconnection for unleashing the magnetic explosion in all these eruptions. The results of this work have been published in Geophysical Research Letters (Geophys. Res. Lett, 30, 2107, 2003).

The work was performed while one of the authors (DPC) held a National Research Council NASA/MSFC Resident Research Associateship.

The author(s) of this abstract have provided an email address for comments about the abstract: debijp@yahoo.com

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