An empirical, statistical model for the formation of the cores of chromospheric Fraunhofer lines

Details An empirical, statistical model for the formation of the cores of chromospheric Fraunhofer lines An empirical, statistical model for the formation of the cores of chromospheric Fraunhofer lines

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977soph...54....3s&link_type=abstract

Solar Physics, vol. 54, Sept. 1977, p. 3-24.

Physics

3

Chromosphere, Fraunhofer Lines, Mathematical Models, Stellar Models, Poisson Density Functions, Solar Spectra

Scientific paper

An empirical, statistical model for the formation of the cores of chromospheric Fraunhofer lines is described. The model chromosphere consists of brighter structural elements with large scale motions randomly distributed in space, and above these, darker structural elements, again randomly distributed in space. Both components underlie a more uniform chromosphere. The probability of finding a given number of elements along a line of sight is specified by the Poisson distribution, in terms of the average number of structures along the line of sight. The method was applied to resonance lines of Ca II and Mg II and to H alpha and H beta with considerable success.

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