Opacity effects on the radiative losses of coronal loops

Details Opacity effects on the radiative losses of coronal loops Opacity effects on the radiative losses of coronal loops

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...370..763k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 370, April 1, 1991, p. 763-774. NASA-supported research.

Astronomy and Astrophysics

Astrophysics

26

Coronal Loops, Opacity, Radiative Transfer, Solar Flares, Solar Prominences, Computerized Simulation, Magnetohydrodynamics, Optical Thickness, Stellar Models

Scientific paper

This paper presents calculations of radiative losses, which include the effects of geometry and optical depth, that can be used to improve the energy losses in many flux-tube calculations for loops with constant and variable cross sections. The results include the non-LTE ionization state of hydrogen and helium, thus allowing the determination of the ionization energy in the gas and the relative importance of collisional and radiative processes. These calculations show that optical depth effects are important under solar conditions in the temperature range of 8000-40,000 K.

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