Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ap%26ss..70..433b&link_type=abstract
Astrophysics and Space Science, vol. 70, no. 2, July 1980, p. 433-439.
Astronomy and Astrophysics
Astrophysics
2
Heat Flux, Radiative Heat Transfer, Solar Corona, Solar Flux Density, Solar Gravitation, Solar Radiation, Boundary Value Problems, Differential Equations, Equations Of Motion, Radiation Pressure, Roche Limit
Scientific paper
The expansion of the solar corona is studied using the hydrodynamic blast wave theory and the concept of the Roche model, with both solar gravity and radiation heat flux taken into consideration. Similarity solutions are developed when the radiation heat flux is more important than the radiation pressure and energy; the gas in the undisturbed field is assumed to be at rest. It is found that behind the shock surface, pressure shows a downward trend and radiation heat flux remains negative throughout, being less and less towards the core at a particular instant; in addition, there is a downward variation of density, which is almost linear up to the point where the singularity is reached.
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