Heating of chromospheric magnetic features by direct current dissipation |
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| Authors: | Satoshi Hinata |
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| Institution: | (1) Physics Department, Auburn University, 36849 Auburn, AL, U.S.A. |
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| Abstract: | It is shown that the direct current dissipation is very unlikely to be the heat source of the coronal loop, because it accompanies unacceptably high heating rate in the chromospheric portion of the loop. This also suggests that a rather weak current density can supply the heat to a small (R < 107 cm) chromospheric magnetic features. A larger magnetic element may be heated by the direct current dissipation only if the current changes directions within a single element so that the generated magnetic field is sufficiently weak to insure MHD stability. |
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