Umbral and penumbral magnetoconvection

Details Umbral and penumbral magnetoconvection Umbral and penumbral magnetoconvection

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002an....323..371w&link_type=abstract

Astronomische Nachrichten, vol. 323, no. 3/4, p. 371-376

Astronomy and Astrophysics

Astronomy

19

Sun: Magnetoconvection, Sun: Spots, Sun: Magnetic Fields

Scientific paper

Compressible convection in a strong vertical magnetic field can take two forms: either there is a regular pattern of small plumes or else the field separates from the motion giving regions of vigorous convection and regions that are magnetically dominated. In an inclined field, patterns are bound to travel. When the magnetic field is almost horizontal, convection takes the form of rolls aligned with the field. In the umbra of a sunspot convection will take the form of spatially modulated oscillations, giving rise to umbral dots. The penumbral field shows an interlocking-comb structure. In the bright filaments the magnetic field is inclined to the horizontal and modulated travelling waves, moving inwards or outwards, can give rise to the migration of bright grains. In the dark filaments the field is nearly horizontal, allowing only inefficient overturning convection.

Affiliated with

Also associated with

No associations

Rating

Umbral and penumbral magnetoconvection 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 Umbral and penumbral magnetoconvection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Umbral and penumbral magnetoconvection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-960036