Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....54..689g&link_type=abstract
Astronomy and Astrophysics, vol. 54, no. 3, Feb. 1977, p. 689-702.
Astronomy and Astrophysics
Astrophysics
15
Atmospheric Heating, Chromosphere, Shock Heating, Stellar Atmospheres, Atmospheric Boundary Layer, Atmospheric Stratification, Flow Velocity, Shock Wave Propagation, Steady State
Scientific paper
The paper reconsiders the physics and the mathematical formulation of the theory of shock-heated atmospheres. A complex boundary-layer structure is found which accounts for the gross features of the vertical stratification of the solar chromosphere. The existence of two different regimes for shock propagation is discussed, and the formalism is extended to include both regimes and the transition from one to the other. The validity of the description of the dynamics is shown to be restricted to small shock strength. Although high velocities are shown to be necessary in the low chromosphere, they are confined in a dynamical boundary layer, so that the formalism described is relevant for the study of the outer layers of the sun.
Gonczi G.
Mangeney Andre
Souffrin P.
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