On a possible mechanism of solar faculae heating

Details On a possible mechanism of solar faculae heating On a possible mechanism of solar faculae heating

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977soph...53...15v&link_type=abstract

Solar Physics, vol. 53, July 1977, p. 15-23.

Physics

Convection, Faculae, Photosphere, Plasma Heating, Solar Granulation, Solar Magnetic Field, Astronomical Models, Fine Structure, Solar Spectra, Velocity Distribution

Scientific paper

A mechanism of solar faculae heating is proposed; the observed dependence of faculae brightness on the strength and direction of the magnetic field not related to sunspot activity and on the photospheric velocity field is taken into account. The proposed mechanism involves interaction of the convective motion with the weak magnetic field at the photospheric level, leading to magnetic field amplification and to the diminishing of its scale to values that would result in ohmic dissipation of the magnetic field. Concomitant heating at the photospheric level would cause the correlation between faculae brightness and the velocity field. An explanation of the fine structure of faculae is also given.

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