Physics
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sowi.confq..66s&link_type=abstract
Iowa Univ., International Solar Wind 8 Conference, p. 66
Physics
Solar Corona, Energy Budgets, Stellar Atmospheres, Heat Flux, Electron Pressure, Pressure Gradients, Conductive Heat Transfer, Conservation Laws, Plasma Heating, Chromosphere, Steady State, Heat Transmission, Energy Dissipation, Temperature Effects, Plasma Temperature
Scientific paper
The energy budgets of the corona are substantially influenced by losses attributed to thermal conduction losses down the transition region, towards the chromosphere. Although Fourier law for such a plasma regime is now universally criticized as inappropriate, the direction of this heat flow seems to be certain. The purpose of this paper is to point out, based on conservation laws, the direction in which the heat must flow in this regime, provided it is known that there is a time independent expansion devoid of parallel currents. It will be argued that the direction of the heat flux is from the base of the transition region up into the corona, rather than the opposite. Under the circumstances mentioned above, the direction of the heat flow should be opposite to the gradient of the electron pressure gradient. Although the transition region is modeled as isobaric, this is only approximately true. Such a likely scenario makes the heat flow almost certainly to flow from the lower temperature base of the TR up into the incipient corona if a steady state current free expansion is to be maintained.
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