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Brightness Observations of the Sun

Published online by Cambridge University Press:  12 April 2016

Jeffrey R. Kuhn*
Affiliation:
National Solar Observatory/Sunspot, NM 88349, USA

Abstract

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There are few solar surface brightness observations with sufficient accuracy to have direct bearing on the question of the origin of the Sun’s bolometric luminosity and irradiance changes (the correlative observations have been reviewed elsewhere in these proceedings). This paper contrasts these observations with a model for the solar variability and illustrates our clear need for high precision surface photometry, in combination with helioseismic data and numerical experiments.

Type
Observational Programs for Solar and Stellar Irradiance Variability
Copyright
Copyright © Kluwer 1994

References

Christensen-Dalsgaard, J., Gough, D.O. & Thompson, M.J. 1991 The depth of the convective zone. Ap. J. 378, 413437.CrossRefGoogle Scholar
Fowler, L. & Foukal, P. 1983 Sunspot bright rings and the thermal diffusivity of solar convection. Solar Phys. 84, 3344.CrossRefGoogle Scholar
Kroll, R. 1993 Latitudinal variation of the solar limb-darkening function. Solar Phys., in press.Google Scholar
Kuhn, J.R. 1992 What causes cycle related global solar changes? GONG 1992: Seismic Investigations of the Sun and Stars (PASP: San Francisco), 2740.Google Scholar
Kuhn, J.R., Libbrecht, K. & Dicke, R.H. 1988 The surface temperature of the Sun and changes in the solar constant. Science 242, 908911.CrossRefGoogle Scholar
Lawrence, J.K. 1988 Multicolor photometric observations of facular contrast. Solar Phys. 116, 1732.CrossRefGoogle Scholar
Lin, H.: 1993 Precision IR and visible photometry II. Ap. J, submitted.Google Scholar
Lin, H. & Kuhn, J.R. 1992 Precision IR and Visible solar photometry. Solar Phys. 141, 126.CrossRefGoogle Scholar
Nishikawa, N. & Hirayama, T. 1990 Facular structures derived from precise two-color contrast observations. Solar Phys. 74, 315. Google Scholar
Spruit, H. 1994 Theoretical interpretation of solar and stellar irradiance variations. In The Sun as a Variable Star: Solar and Stellar Irradiance Variations (ed. Pap, J.M., Fröhlich, C., Hudson, H.S. & Solanki, S.K.). Cambridge University Press, in press.Google Scholar
Topka, K. 1993 High resolution solar photometry. Solar Physics Division of AAS, in press.Google Scholar
Willson, R.C. & Hudson, H.S.: 1988 Solar luminosity variation in cycle 21, Nature 332, 810812.CrossRefGoogle Scholar