A siphon mechanism for supplying prominence mass

Details A siphon mechanism for supplying prominence mass A siphon mechanism for supplying prominence mass

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986soph..104..303p&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 104, April 1986, p. 303-312. NASA-Navy-supported research.

Physics

54

Chromosphere, Mass Flow, Solar Prominences, Stellar Mass, Flow Velocity, Formation, Heating, Magnetic Field Configurations

Scientific paper

A siphonlike mechanism for moving mass from the chromosphere to a gravitational well at the top of a magnetic loop to form a prominence is examined. The calculations assume no a priori flow velocity at the loop base. Instead, heating in the loop legs drives the flow. The prominence formation process requires two steps. First, the background heating rate must be reduced to on the order of 1 percent of the initial heating rate required to maintain the coronal loop. This forms an initial condensation at the top of the loop. Second, the heating must take place only in the loop legs in order to produce a pressure differential which drives mass up into the well at the top of the loop. The heating rate in the loop must be increased once the prominence has begun to form, or full prominence densities cannot be achieved in a reasonable time. It is concluded that this heating driven siphonlike mechanism is feasible for producing and maintaining prominences.

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