Joule heating in the photosphere and chromosphere

Details Joule heating in the photosphere and chromosphere Joule heating in the photosphere and chromosphere

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.6879k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, June 1, 1989, p. 6879-6885.

Physics

2

Atmospheric Heating, Chromosphere, Dynamo Theory, Ohmic Dissipation, Photosphere, Resistance Heating, Convection Currents, Solar Corona, Solar Granulation, Solar Magnetic Field, Solar Wind

Scientific paper

Joule dissipation due to the dynamo action in the solar atmosphere is explored as a possible mechanism for heating the photosphere and chromosphere. The energy flux produced by Joule dissipation in nonactive photosphere-chromosphere regions is found to be about 2.4 x 10 to the 7th ergs/sq cm per s, more than 40 times the energy flux carried away by the high-speed solar wind streams originating in the coronal holes. For the case of active regions, the results suggest that Joule heating is confined to the photosphere and is more than two orders of magnitude greater than in nonactive regions.

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