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LASCO/EIT Observations of Coronal Mass Ejections from Large-Scale Filament Channels

  • S.P. Plunket (a1), K.P. Dere (a1), R.A. Howard (a1), D.J. Michels (a1), G.E. Brueckner (a1), B.J. Thompson (a2) and J.-P. Delaboudinière (a3)...

Abstract

Solar activity in the latter half of 1996 was dominated by the presence of an extended filament channel in the southern hemisphere, forming a switchback configuration where it merged with the polar crown. Several large coronal mass ejections (CMEs) were observed to originate on or near this magnetic neutral line by the LASCO and EIT instruments on SOHO. As this channel gradually disappeared, a new, extended channel formed to the west of the old one, and this new channel also produced a number of large CMEs. We report here on observations of two events (December 23, 1996 and February 7,1997), and discuss the global nature of these events.

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References

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Brueckner, G.E. et al. 1995, Solar Phys., 162, 357
Delaboudinière, J.-P. et al. 1995, Solar Phys., 162, 291
Dere, K.P. et al. 1997, Solar Phys., 175, 601
Gopalswamy, N. 1997, SHINE Report on the February 7, 1997 CME
Plunkett, S.P. et al. 1997, in The Corona and Solar Wind Near Minimum Activity, ESA SP-404, ESA: Noordwijk, Holland, p. 615
Thompson, B.J. 1998, in preparation

LASCO/EIT Observations of Coronal Mass Ejections from Large-Scale Filament Channels

  • S.P. Plunket (a1), K.P. Dere (a1), R.A. Howard (a1), D.J. Michels (a1), G.E. Brueckner (a1), B.J. Thompson (a2) and J.-P. Delaboudinière (a3)...

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