Extreme-ultraviolet observations of coronal holes. I - Locations, sizes and evolution of coronal holes, June 1973-January 1974

Details Extreme-ultraviolet observations of coronal holes. I - Locations, sizes and evolution of coronal holes, June 1973-January 1974 Extreme-ultraviolet observations of coronal holes. I - Locations, sizes and evolution of coronal holes, June 1973-January 1974

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977soph...51..377b&link_type=abstract

Solar Physics, vol. 51, Mar. 1977, p. 377-398.

Astronomy and Astrophysics

Astronomy

69

Coronagraphs, Far Ultraviolet Radiation, Solar Corona, Spaceborne Astronomy, Polar Caps, Skylab Program, Solar Rotation

Scientific paper

The disk boundaries of coronal holes have been systematically determined from XUV observations taken during the manned Skylab missions (June 1973-January 1974). The resulting atlas was used to find the sizes, global distributions, differential rotation rates, growth/decay rates and lifetimes of holes during this period. The polar cap holes together covered 15% of the sun's total surface area, a number which remained surprisingly constant throughout Skylab despite the fact that each pole was independently evolving in time. Lower latitude holes contributed another 2 to 5%.

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