Some calculations bearing on the heating and cooling of quiescent prominences

Details Some calculations bearing on the heating and cooling of quiescent prominences Some calculations bearing on the heating and cooling of quiescent prominences

Aug 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979soph...63...93l&link_type=abstract

Solar Physics, vol. 63, Aug. 1979, p. 93-103.

Physics

Conductive Heat Transfer, Plasma Heating, Solar Magnetic Field, Solar Prominences, Continuous Radiation, Solar Corona, Solar Flux, Solar Radiation, Surges

Scientific paper

The evolution of heat along and perpendicular to magnetic fields threading quiescent prominences is discussed. It was shown that while heating of prominence material can occur on a time scale of the order of 1000's, individual flux tubes are effectively thermally insulated from neighboring tubes, since the transverse heat conduction time scale is of the order of 10000 per year. The exact solution to the one-dimensional parallel heat conduction problem is shown to differ significantly from the approximate solution of Ioshpa (1965). It was suggested that uneven heating of a quiescent prominence by the surrounding solar corona may contribute to surges and/or the 'winking' phenomenon recorded in many quiescent prominences. The signature of such a temperature pulse would be a sharp brightening of continuum radiation with a correlated decrease in the free-bound emission, followed by a slow recovery of both to their pre-heat pulse levels.

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