Turbulent coronal heating. I. Sheared arcade.

Details Turbulent coronal heating. I. Sheared arcade. Turbulent coronal heating. I. Sheared arcade.

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...293..913i&link_type=abstract

Astronomy and Astrophysics 293, 913-926 (1995)

Astronomy and Astrophysics

Astrophysics

22

Mhd, Turbulence, Sun: Corona

Scientific paper

The model of Heyvaerts & Priest for heating the solar corona by turbulent processes in a sheared arcade is examined in more detail by numerically solving their basic equations for the turbulent viscosity, magnetic diffusivity, velocity and energy flux density. A weighted spectrum for the mean square velocity in the photosphere and a scale-dependent turbulent viscosity and magnetic diffusivity for local eddy relaxation are introduced which improve the self-consistency of the model. Estimates are made of the turbulent variables listed above which are found to accord well with the requirements for heating a solar active region (=~10^7^erg/cm^2^/s).

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