The Physics of the Chromosphere from Empirical Models

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Scientific paper

Models empirically reproducing observed characteristics of the solar chromosphere give insight into its physics and provide important constraints for theoretical modeling. Thus, the temperature structure of the model of Vernazza, Avrett & Loeser (1981), which is based on the emergent spectrum of emission lines and continua from the chromosphere, points to a particular heating mechanism; the simulations of Carlsson & Stein (1994) of the dynamics of calcium bright points conclusively settle the question of the nature of the waves that power the bright points; and systematic discrepancies between simulated and observed intensities at maximal H 2v enhancement reveal the geometry of wave propagation in a stratified atmosphere. The power spectrum and the energy flux in the Carlsson & Stein simulations faithfully reproduce bright point dynamics, but the spectrum predicted from their dynamical model does not match other observations. Support by NASA is gratefully acknowledged

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