Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...325..813n&link_type=abstract
Astronomy and Astrophysics, v.325, p.813-818
Astronomy and Astrophysics
Astrophysics
12
Radiative Transfer, Sun: Prominences
Scientific paper
We consider the problem of determining the statistical properties (intensity distribution, mean value and relative mean square deviation) of radiation which emerges from a medium with randomly distributed inhomogeneities when scattering is taken into account. The analytical formalism we propose is based on Ambartsumian's method of addition of layers. This can be applied to both local thermodynamic equilibrium (LTE) and Non-LTE cases for a wide variety of situations. A more detailed treatment of the special case of pure scattering, considered as the prototype problem for the transfer of the Lalpha_ -line radiation, is given. The present investigation is assumed to apply for interpreting the spectra of various inhomogeneous structures on the Sun. It is shown in particular that some specific features of the extreme ultraviolet (EUV) spectra of solar prominences may be accounted for within the framework of the theory we propose.
Mouradian Zadig
Nikoghossian Arthur G.
Pojoga Sorin
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