Star as a standard of coronal brightness and cyclic variations of the solar K-corona

Details Star as a standard of coronal brightness and cyclic variations of the solar K-corona Star as a standard of coronal brightness and cyclic variations of the solar K-corona

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..105b&link_type=abstract

In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze

Physics

Solar Eclipse, Coronal Brightness, Cyclic Variations

Scientific paper

Absolute calibration of the 11 July 1991 white-light corona brightness was performed by using the δ Gem star detected on the solar eclipse images. After subtracting the F-corona contribution by the model of Koutchmy and Lamy (1985), we have obtained brightness of the K-corona at the distance 2.3 Rsolar from the sun's disk centre as much as logIk = 1.92 in units 10-10Bsolar. This value agrees with estimations of some other authors and very well fits on the general curve of the K-corona brightness variability in the solar cycle.

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