Engineering topics
Publications and source records attributed to Vernazza, J. E..
A procedure is demonstrated that is used to compute a one-component model of the solar atmosphere, including in that model the photosphere, chromosphere, and chromosphere-corona transition zone. In particular, the equations are described that are solved in order to determine this theoretical model.
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A new model of the chromosphere is described that is based on Lyman-continuum observations by Harvard spectrometers aboard the satellites OSO 4 and OSO 6. The temperature, gas pressure, electron pressure, particle densities, and hydrogen ground-state departure coefficient are calculated as a function of height in the chromosphere. The model reproduces the observed quiet-region intensities in the Lyman continuum. The inhomogeneous structures, believed to be spicules, are inferred to be optically thick in the Lyman continuum and to have a source function below that of the mean chromosphere.