Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229..788a&link_type=abstract
Astrophysical Journal, Part 1, vol. 229, Apr. 15, 1979, p. 788-798.
Astronomy and Astrophysics
Astrophysics
29
Astronomical Models, Plasma Radiation, Radiant Cooling, Solar Flares, Solar X-Rays, Boundary Conditions, Boundary Value Problems, Density Distribution, Evaporative Cooling, Flow Equations, Mathematical Models, One Dimensional Flow, Temperature Distribution, Velocity Distribution
Scientific paper
We have constructed a numerical model for a cooling flare loop in which the complete set of single-fluid equations in a one-dimensional geometry (i.e., parallel to the magnetic field) is solved. Both evaporative and static boundary conditions for the chromosphere-corona interface have been developed. This model is used to investigate the effects of initial temperature and density, loop geometry, and boundary conditions on the form of the plasma evolution and the soft X-ray emission. The results are then compared with Skylab S-056 observations of the 1973 August 9 flare. For this comparison, and under the present assumptions, we conclude that even highly compact flares must have a multiloop structure similar to large flares, and that both radiative and conductive cooling are necessary to explain the observations. The data appear to be consistent with the predicted emission from a combination of evaporative cooling loops.
Antiochos Spiro K.
Krall K. R.
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