A study of solar photospheric limb-darkening variations

Details A study of solar photospheric limb-darkening variations A study of solar photospheric limb-darkening variations

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...283..426p&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 283, Aug. 1, 1984, p. 426-438.

Astronomy and Astrophysics

Astrophysics

28

Limb Darkening, Photosphere, Solar Atmosphere, Temperature Distribution, Atmospheric Models, Convection, Radiative Transfer, Variability

Scientific paper

The authors have obtained regular observations of photospheric limb darkening, using the McMath Solar Telescope, to study possible slow changes in the global temperature structure, in Teff, and in the ultraviolet continuum flux from the quiet Sun. This paper reports on the analysis of data obtained on 15 days between 1980 September and 1982 December in a continuum window at λ4451. There are no variations of global limb darkening exceeding 0.1% at the 99% confidence level. The implications of these measurements for slow changes in solar luminosity, convection zone structure, and ultraviolet flux are discussed.

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