Solar activity and the general absence of hydrostatic equilibrium in an azimuthal magnetic field

Details Solar activity and the general absence of hydrostatic equilibrium in an azimuthal magnetic field Solar activity and the general absence of hydrostatic equilibrium in an azimuthal magnetic field

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...201..502p&link_type=abstract

Astrophysical Journal, vol. 201, Oct. 15, 1975, pt. 1, p. 502-508.

Astronomy and Astrophysics

Astrophysics

1

Solar Activity, Solar Atmosphere, Solar Magnetic Field, Solar X-Rays, Azimuth, Convective Flow, Equations Of Motion, Equilibrium Equations, Gravitational Fields, Hydrostatics, Photosphere

Scientific paper

It is shown that any temperature variation along the axis of symmetry of an azimuthal field causes continual convective activity. There is no static equilibrium configuration except in very special, and hence improbable, cases. It is suggested that this dynamic effect contributes to the activity associated with the flux tubes extending through the solar photosphere. The X-ray bright spots, evidently caused by the emergence and expansion of small bipolar regions, may be produced in part by the convective effect of an azimuthal field.

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