Radiative Heating and the Buoyant Rise of Magnetic Flux Tubes in the Solar interior
Abstract
We study the effect of radiative heating on the evolution of thin magnetic flux tubes in the solar interior and on the eruption of magnetic flux loops to the surface. Magnetic flux tubes experience radiative heating because (1) the mean temperature gradient in the lower convection zone and the overshoot region deviates substantially from that of radiative equilibrium, and hence there is a non-zero divergence of radiative heat flux; and (2) the magnetic pressure of the flux tube causes a small change of the thermodynamic properties within the tube relative to the surrounding field-free fluid, resulting in an additional divergence of radiative heat flux. Our calculations show that the former constitutes the dominant source of radiative heating experienced by the flux tube.
- Publication:
-
Solar Physics
- Pub Date:
- June 1996
- DOI:
- 10.1007/BF00179354
- Bibcode:
- 1996SoPh..166...17F
- Keywords:
-
- Flux Tube;
- Convection Zone;
- Radiative Heating;
- Radiative Heat Flux;
- Magnetic Flux Tube