Active-Region Filaments and X-ray Sigmoids

Details Active-Region Filaments and X-ray Sigmoids Active-Region Filaments and X-ray Sigmoids

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002soph..207..111p&link_type=abstract

Solar Physics, v. 207, Issue 1, p. 111-123 (2002).

Physics

42

Scientific paper

We use Yohkoh soft X-ray telescope data and Hα full-disk observations to study the evolution of chromospheric filaments and coronal sigmoids in 6 active regions in association with coronal mass ejections (CMEs). In two cases, CMEs are directly observed by the SOHO/LASCO C2 coronagraph. In four cases, other observations (magnetic clouds, geomagnetic storms, sigmoid-arcade evolution) are used as CME indicators. Prior to eruption, each active region shows a bright coronal sigmoidal loop and underlying Hα filament. The sigmoid activates, erupts and gets replaced by a cusp, or an arcade. In contrast, the Hα filament shows no significant changes in association with sigmoid eruption and CME. We explain these observations in a framework of the classical two-ribbon flare model.

Affiliated with

Also associated with

No associations

Rating

Active-Region Filaments and X-ray Sigmoids does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Active-Region Filaments and X-ray Sigmoids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active-Region Filaments and X-ray Sigmoids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-833711