Heating of the corona and solar wind by switch-on shocks

Details Heating of the corona and solar wind by switch-on shocks Heating of the corona and solar wind by switch-on shocks

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...254..806h&link_type=abstract

Astrophysical Journal, Part 1, vol. 254, Mar. 15, 1982, p. 806-813.

Astronomy and Astrophysics

Astrophysics

49

Energy Dissipation, Magnetohydrodynamic Waves, Shock Heating, Shock Wave Propagation, Solar Corona, Solar Wind, Plasma Turbulence, Solar Atmosphere, Wave Degradation

Scientific paper

The possibility is examined that the corona is heated by a train of weak switch-on shocks which are formed in the chromosphere from a train of Alfven waves, and which subsequently enter the corona from below. New results for the shock train propagation and dissipation and the resultant coronal heating are derived. It is shown that most of the energy in the shock train can be dissipated within one or two solar radii above the coronal base. A train of switch-on shocks therefore represents a viable coronal heating mechanism. The results are generalized to switch-on shocks in the solar wind. It is shown that such shocks can dissipate rapidly, but it is concluded that they are not the dominant factor governing the evolution of the solar wind turbulence.

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