On magnetohydrodynamic thermal instabilities in magnetic flux tubes

Details On magnetohydrodynamic thermal instabilities in magnetic flux tubes On magnetohydrodynamic thermal instabilities in magnetic flux tubes

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...299..769m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 299, Dec. 15, 1985, p. 769-780. Research supported by Harvard-Smithsonian C

Astronomy and Astrophysics

Astrophysics

7

Magnetic Flux, Magnetohydrodynamic Stability, Radiative Transfer, Stellar Coronas, Stellar Mass Accretion, Thermal Instability, Absorptivity, Maxwell Equation, Ohms Law, Optical Thickness, Saha Equations

Scientific paper

The authors discuss the stability of current-driven filamentary modes in magnetic flux tubes embedded in a plane-parallel atmosphere in LTE and in hydrostatic equilibrium. Within the tube only energy transport by radiation is considered. The dominant contribution to the opacity is due to H- ions and H atoms (in the Paschen continuum). The authors delimit a region in the parameter space of the equilibrium configuration in which the instability is effective, and they discuss the relevance of this process for the formation of structured coronae in late-type stars and accretion disks.

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