Evolution of the Large Scale Structure of the Solar Corona, 1965-1992

Details Evolution of the Large Scale Structure of the Solar Corona, 1965-1992 Evolution of the Large Scale Structure of the Solar Corona, 1965-1992

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...183.2508f&link_type=abstract

American Astronomical Society, 183rd AAS Meeting, #25.08; Bulletin of the American Astronomical Society, Vol. 25, p.1332

Astronomy and Astrophysics

Astronomy

Scientific paper

A series of three imaging K-coronameter systems have been used to monitor the structure and evolution of the lower solar corona, at altitudes of 1.3 to 1.5 solar radii from the visible limb, for a 27.2-year period beginning in 1965. Analysis of this data set demonstrates three aspects of the long term variability of the sun's outer atmosphere: (1) Some of the largest spatial scale structure demonstrates evolution on a time scale which is long compared with the rotational period of the sun. (2) Over the period of observation the polarized brightness distribution of the large-scale corona exhibited a periodic zonal variation which was not symmetric about the rotation equator of the sun. (3) Suppression of the axisymmetric zonal polarized brightness distribution reveals the existence of a persistent sectoral structure. The second point is interpreted as being consistent with the hypothesis that an approximately periodic magnetic variation is superposed on the traditional large-scale magnetic cycle (22-year) zonal magnetic field evolution. This perturbation is qualitatively consistent with the existence of a variable zonal quadrupolar field with a period of approximately half of the 22-year magnetic cycle. The third point is consistent with the existence of a semi-permanent east-west assymetry in the large-scale magnetic field.

Affiliated with

Also associated with

No associations

Rating

Evolution of the Large Scale Structure of the Solar Corona, 1965-1992 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 Evolution of the Large Scale Structure of the Solar Corona, 1965-1992, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of the Large Scale Structure of the Solar Corona, 1965-1992 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-778355