Magnetic nulls and topology in a class of solar flare models.

Details Magnetic nulls and topology in a class of solar flare models. Magnetic nulls and topology in a class of solar flare models.

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993soph..148..301y&link_type=abstract

Solar Physics, Vol. 148, No. 2, p. 301 - 324

Physics

Solar Flares: Models, Solar Flares: Magnetohydrodynamics

Scientific paper

The authors study the magnetic field-line topology in a class of solar flare models with four magnetic dipoles. By introducing a series of symmetry-breaking perturbations to a fully symmetric potential field model, they show that isolated magnetic nulls generally exist above the photosphere. These nulls are physically important because they determine the magnetic topology above the photosphere. In some special cases, there may be a single null above the photosphere with quasi two-dimensional properties. For such a model, a quasi null line connects the null to the photosphere. In the limit of small non-ideal effects, boundary layers and current sheets may develop along the quasi null line and the associated separatrix surfaces. Field lines can then reconnect across the quasi null line, as in two-dimensional reconnection. In a more general force-free case, the field contains a pair of nulls above the photosphere, with a field line (the separator) connecting the two nulls. In the limit of small non-ideal effects, boundary layers and current sheets develop along the separator and the associated separatrix surfaces. The system exhibits three-dimensional reconnection across the separator, over which field lines exchange identity. The separatrices are related to preferable sites of energy release during solar flares.

Affiliated with

Also associated with

No associations

Rating

Magnetic nulls and topology in a class of solar flare models. 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 Magnetic nulls and topology in a class of solar flare models., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic nulls and topology in a class of solar flare models. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1302366