The initiation of coronal mass ejections by magnetic flux emergence

Details The initiation of coronal mass ejections by magnetic flux emergence The initiation of coronal mass ejections by magnetic flux emergence

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26a...459..927d&link_type=abstract

Astronomy and Astrophysics, Volume 459, Issue 3, December I 2006, pp.927-934

Astronomy and Astrophysics

Astrophysics

7

Sun: Coronal Mass Ejections (Cmes), Sun: Magnetic Fields, Magnetohydrodynamics (Mhd)

Scientific paper

Aims.The initiation of solar Coronal Mass Ejections (CMEs) is studied in the framework of computational Magneto-Hydro-Dynamics (MHD). Methods: .The initial configuration includes a magnetic flux rope that is embedded in a gravitationally stratified solar atmosphere with a background dipole magnetic field in spherical, axi-symmetric geometry. The flux rope is in equilibrium due to an image current below the photosphere. An emerging magnetic flux triggering mechanism is used to make this equilibrium configuration unstable. Results: . When the magnetic flux emerges within the filament below the flux rope this results in a catastrophic behavior similar to earlier, more simple models. As a result, the flux rope rises and a current sheet forms below it. It is shown that the magnetic reconnection in the current sheet below the flux rope in combination with the outward curvature forces results in a fast ejection of the flux rope as observed for solar CMEs. We have done a parameter study of the effect of the flux emergence rate on the velocity and the acceleration of the resulting CMEs.

Affiliated with

Also associated with

No associations

Rating

The initiation of coronal mass ejections by magnetic flux emergence 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 The initiation of coronal mass ejections by magnetic flux emergence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The initiation of coronal mass ejections by magnetic flux emergence will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1154457