Thermal equilibria of coronal magnetic loops

Details Thermal equilibria of coronal magnetic loops Thermal equilibria of coronal magnetic loops

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990soph..125..295s&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 125, Feb. 1990, p. 295-319. Research supported by SERC and EEC.

Physics

20

Coronal Loops, Solar Corona, Solar Magnetic Field, Solar Temperature, Solar Prominences, Temperature Distribution, Thermodynamic Equilibrium

Scientific paper

Equations of thermal equilibrium along coronal loops with footpoint temperatures of 2 x 10 to the 4th K are solved. Three fundamentally different categories of solution are found, namely, for hot loops, cool loops, and hot-cool loops. The loops are characterized thermally and spatially. The possibility of warm loops is suggested, but the observed differential emission measure suggests that most of the plasma in the solar atmosphere is in either the hot or the cool phase. It is also suggested that a thermal catastrophe may occur when the length or pressure of a loop is so small that the hot solution ceases to exist, and there are only cool loop solutions.

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