Solar coronal structure near the time of the 1991 July 11 total solar eclipse

Details Solar coronal structure near the time of the 1991 July 11 total solar eclipse Solar coronal structure near the time of the 1991 July 11 total solar eclipse

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...408..368s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 408, no. 1, p. 368-372.

Astronomy and Astrophysics

Astrophysics

5

Solar Corona, Solar Eclipses, Density Distribution, Solar Cycles

Scientific paper

We present observations of the solar corona in white light at the time of the 1991 July 11 total solar eclipse together with daily observations made during the interval 1991 June 12 to August 16 designed to provide a synoptic context in which data from the total solar eclipse can be interpreted. Included in the daily observations are those from the Mark-III K-coronameter of the Mauna Loa Solar Observatory as well as photographic records of the sun in H-alpha made from the same site. Combining these data with the eclipse observation, we estimate a probable global density distribution of the corona at the time of the eclipse. This indicates that although the eclipse occurred soon after the most recent solar activity cycle maximum, the corona was already organized in a tilted dipole configuration.

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