Coronal rotation during solar cycle 20

Details Coronal rotation during solar cycle 20 Coronal rotation during solar cycle 20

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982soph...80..185p&link_type=abstract

Solar Physics, vol. 80, Sept. 1982, p. 185-198.

Physics

25

Brightness Distribution, Solar Corona, Solar Cycles, Solar Rotation, Annual Variations, Coronagraphs, Latitude, Maximum Entropy Method, Solar Magnetic Field, Spectrum Analysis

Scientific paper

The rotation of the solar corona is investigated using K-coronameter brightness observations. The analysis is based on 367,560 individual digitized polarization brightness measurements made at latitude increments of five degrees about the limb and at two heights in the corona. The daily observations extend from February, 1964 to December, 1976. A representative plot of the K-coronal intensity demonstrates the stability of bright coronal structures over several solar rotations. These data and others are used with a computational technique based on maximum spectrum entropy analysis to investigate coronal rotation. The technique and its statistical limitations are discussed, and the latitude, height, and time dependence of the coronal rotation are described.

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