Small-scale flux emergence and the evolution of equatorial coronal holes

Details Small-scale flux emergence and the evolution of equatorial coronal holes Small-scale flux emergence and the evolution of equatorial coronal holes

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985soph...95...73d&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 95, Jan. 1985, p. 73-82.

Astronomy and Astrophysics

Astronomy

3

Coronal Holes, Solar Flux, X Ray Astronomy, Brightness, Evolution (Development), Magnetic Flux, Solar X-Rays

Scientific paper

To study the formation and development of coronal holes, their association with X-ray bright points has been investigated. The areal density of X-ray bright points was measured within the boundaries of coronal holes and was found to increase linearly with time for each of the three, long-lived, equatorial coronal holes of the Skylab era. Analysis of the data shows that the effect is not the result of global changes in bright point number and is therefore a property of the restricted longitude region which contains the coronal hole. The bright point density at the time of the hole's formation was also measured and, although the result is more uncertain, was found to be similar to the bright point number over the solar surface. No association was found between bright points and the rate of change of coronal hole area.

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