Nonlinear radiative condensation in a sheared magnetic field

Details Nonlinear radiative condensation in a sheared magnetic field Nonlinear radiative condensation in a sheared magnetic field

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...317l..91v&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 317, June 15, 1987, p. L91-L94. NASA-NSF-supported

Astronomy and Astrophysics

Astrophysics

23

Condensation, Force-Free Magnetic Fields, Solar Magnetic Field, Solar Prominences, Magnetohydrodynamic Flow, Stellar Models, Thermal Instability

Scientific paper

The thermal instability, in which plasma cooling and condensation are driven by increasing radiation losses, is believed to underly a number of filamentation processes in astrophysics. This Letter describes a unique, well-resolved, two-dimensional, nonlinear, numerical simulation of the formation of a filament in a force-free field. The condensation is initiated by a linearly unstable mode and widens until it is slowed by parallel (to B) thermal conduction. During the nonlinear evolution, the minimum temperature falls from 106K to 104K and eventually reaches a state of local thermal equilibrium in about five e-folding times.

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