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Models of the Solar Photosphere

Published online by Cambridge University Press:  08 February 2017

Eugene H. Avrett
Eugene H. Avrett*
Affiliation:
Harvard-Smithsonian Center for Astrophysics 60 Garden Street Cambridge, Massachusetts 02138, USA

Abstract

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This review summarizes the main properties of the available theoretical models of the solar photosphere and the semiempirical models based primarily on observed spectra in different wavelength regions. LTE and non-LTE semiempirical models are compared with LTE and non-LTE theoretical (radiative equilibrium) models calculated with and without convective energy transport. Atomic and molecular lines throughout the spectrum affect the model calculations in essential ways. The temperature-minimum region, considered as the upper boundary of the photosphere, is discussed in detail, in view of the substantial non-radiative cooling in this region. Results are shown to illustrate the relationship between average one-dimensional models and Nordlund's three-dimensional convection models.

Type
I. Global Properties of the Photosphere
Information
Symposium - International Astronomical Union , Volume 138: Solar Photosphere: Structure, Convection and Magnetic Fields , 1990 , pp. 3 - 22
Copyright
Copyright © Kluwer 1990 

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