Causal Relationships between Eruptive Prominences and Coronal Mass Ejections

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

20 pages and 8 figures Invited paper presented at SoHO-20 in Gent (Aug. 2007), in press in Ann. Geophysicae

Scientific paper

A close association between eruptive prominences and CMEs, both slow and fast CMEs, was reported in many studies. Sometimes it is possible to follow the material motion starting from the prominence (filament) activation to the CME in the high corona. Remnants of the prominence were found in the bright core of CMEs. However, detailed comparisons of the two phenomena reveal problems in explaining CMEs as a continuation of filament eruptions in the upper corona. For example, the heliolatitudes of the disappeared filaments and subsequent coronal ejections sometimes differ by tens of degrees. In order to clear up the problems of EP-CME association we tentatively analyse the more general question of the dynamics of a magnetic flux rope. Prominences and filaments are the best tracers of the flux ropes in the corona long before the beginning of the eruption. A twisted flux rope is held by the tension of field lines of photospheric sources until parameters of the system reach critical values and a catastrophe happens. We suggest that the associated flux rope height above the photosphere is one of these parameters and it is revealed by the height of the filament. 80 filaments were analysed and we found that eruptive prominences were near the so-called limit of stability a few days before their eruptions. We suggest that a comparison of the real heights of prominences with the calculated critical heights from magnetograms could be systematically used to predict filament eruptions and the corresponding CMEs.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Causal Relationships between Eruptive Prominences and Coronal Mass Ejections 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 Causal Relationships between Eruptive Prominences and Coronal Mass Ejections, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Causal Relationships between Eruptive Prominences and Coronal Mass Ejections will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-46212

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.