Flux Emergence in the Sunspot Moat

Details Flux Emergence in the Sunspot Moat Flux Emergence in the Sunspot Moat

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.8602t&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #86.02; Bulletin of the American Astronomical Society, Vol. 26, p.1464

Astronomy and Astrophysics

Astronomy

2

Scientific paper

On 13-15 June 1994 we obtained simultaneous movies of a sunspot in NOAA active region 7731 through a 3 Angstroms band K line filter, the LPARL tunable filter, and an 8 Angstroms G band filter. The data sets allow us to make aligned magnetic, continuum, Doppler, K line, and G band movies. The sunspot had a well developed moat. Flux emergence occured throughout the moat. The initial signature of the emergence was a transient dark elongated structure in the K line images that was aligned radially with respect to the spot. Bright point pairs appeared at the ends of these features in the K line and G band shortly after their emergence. Magnetic field is observed cospatial with the K line bright point pairs. The magnetic polarity of the end of the pair closest to the spot is the same as the spot. The pairs of bright points move across the moat in a radial direction away from the spot. When the pairs reach the moat boundary the leading bright point merges with a moat feature and the two disappear. The leading bright point's field and the moat field cancel, since the moat boundary and the spot have the same polarity. We believe that these features are different from the long observed moving magnetic features associated with sunspots.

Affiliated with

Also associated with

No associations

Rating

Flux Emergence in the Sunspot Moat 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 Flux Emergence in the Sunspot Moat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flux Emergence in the Sunspot Moat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1322404