On the contrast of facular hillocks in the infrared

Details On the contrast of facular hillocks in the infrared On the contrast of facular hillocks in the infrared

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...372..728s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 372, May 10, 1991, p. 728-732.

Astronomy and Astrophysics

Astronomy

4

Astronomical Models, Faculae, Infrared Astronomy, Solar Limb, Photosphere, Sunspots

Scientific paper

Faculae appear increasingly bright toward the limb of the sun. Recent observations also have shown that, in the infrared, these features appear dark at disk center. It is demonstrated that the hillock model of Schatten et al. (1986) can describe the essential features of these observations. In light of this model, a simple explanation is given for the contrast behavior of faculae. The observations are discussed in the context of the alternative well model.

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