A model of the sheared magnetic field in a coronal loop is used to evaluate the average cross-field suppression of axial thermal conduction. If the energy source is uniform in radius, this can lead to heat-flux reduction by a factor greater than three. When the source is annular, in a region of radi
Influence of magnetic field structure on the conduction cooling of flare loops
โ Scribed by S. K. Antiochos; P. A. Sturrock
- Publisher
- Springer
- Year
- 1976
- Tongue
- English
- Weight
- 388 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0038-0938
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โฆ Synopsis
A simple model facilitates calculation of the influence of magnetic field configuration on the conduction cooling rate of a hot post-flare coronal plasma. The magnetic field is taken to be that produced by a line dipole or point dipole at an arbitrary depth below the chromosphere. For the high temperatures (T~ > 10 7 K) produced by flares, the plasma may remain static and isobaric. The influence of the field is such as to increase the heat flux (per unit area) into the chromosphere, but to decrease the total conduction cooling of the flare plasma. This leads to a significant enhancement of the total energy radiated by the flare plasma.
๐ SIMILAR VOLUMES
Attention is drawn to consequences of the non-linear nature of thermal conductivity on the cooling rate of solar flares.