Observations of large-scale moving magnetic features near sunspots

Details Observations of large-scale moving magnetic features near sunspots Observations of large-scale moving magnetic features near sunspots

Feb 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apl....16...43m&link_type=abstract

Astrophysical Letters, vol. 16, no. 2, 1975, p. 43-51.

Astronomy and Astrophysics

Astrophysics

1

Magnetic Flux, Penumbras, Solar Magnetic Field, Sunspots, Astronomical Models, Time Dependence, Zeeman Effect

Scientific paper

High time and spatial resolution magnetograms taken with a longitudinal video magnetograph show the systematic motion of large crescents and ridges of magnetic field at the outer penumbral boundary of a large complex sunspot group. Both ridges and crescents are resolved into knots of flux which are typically 2 arc sec to 3 arc sec in extent, and which move in unison with velocities in the range of 0.2 to 0.3 km/sec. Over a four-hour period, these ridges of magnetic field, which are predominantly of opposite polarity to the parent sunspot, are observed to move over distances of from 4 arc sec to 6 arc sec, and merge with existing outlying magnetic fields. It is suggested that large-scale crescents or ridges of magnetic field emerge periodically at penumbral boundaries. Preliminary models for the transport of magnetic fields around sunspots are proposed.

Affiliated with

Also associated with

No associations

Rating

Observations of large-scale moving magnetic features near sunspots 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 Observations of large-scale moving magnetic features near sunspots, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of large-scale moving magnetic features near sunspots will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-998892