Long-term evolution of solar sector structure

Details Long-term evolution of solar sector structure Long-term evolution of solar sector structure

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975soph...41..461s&link_type=abstract

Solar Physics, vol. 41, Apr. 1975, p. 461-475.

Physics

65

Interplanetary Magnetic Fields, Secular Variations, Solar Magnetic Field, Sunspot Cycle, Polar Regions, Solar Longitude, Solar Rotation, Stellar Evolution, Stellar Structure

Scientific paper

The large-scale structure of the solar magnetic field during the past five sunspot cycles (representing by implication a much longer interval of time) has been investigated, using the polarity (toward or away from the Sun) of the interplanetary magnetic field as inferred from polar geomagnetic observations. The polarity of the interplanetary magnetic field has previously been shown to be closely related to the polarity (into or out of the Sun) of the large-scale solar magnetic field. It appears that a solar structure with four sectors per rotation persisted through the past five sunspot cycles with a synodic rotation period near 27.0 days, and a small relative westward drift during the first half of each sunspot cycle and a relative eastward drift during the second half of each cycle. Superimposed on this four-sector structure there is another structure with inward field polarity, a width in solar longitude of about 100 deg, and a synodic rotation period of about 28 to 29 days. This 28.5-day structure is usually most prominent during a few years near sunspot maximum. Some preliminary comparisons of these observed solar structures with theoretical considerations are given.

Affiliated with

Also associated with

No associations

Rating

Long-term evolution of solar sector structure 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 Long-term evolution of solar sector structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-term evolution of solar sector structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-949174