Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pazh...10..716m&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 10, Sept. 1984, p. 716-720) Soviet Astronomy Letters (ISSN 0360-0327), vol. 10, Sept.-O
Astronomy and Astrophysics
Astronomy
1
Current Sheets, Magnetohydrodynamic Stability, Solar Flares, Tearing Modes (Plasmas), Thermal Instability, Radiant Cooling, Resistance Heating, Reynolds Number, Thermal Plasmas
Scientific paper
A simple model is used to investigate how thermal processes should influence the linear resistive tearing instability (RTI) of current sheets in highly conductive plasma. Joule heating and radiative cooling (for the optically thin case) are included in the heat balance equation. The plasma is assumed to be incompressible, the plasma density is assumed constant in both space and time, and in the undisturbed state all plasma flow is assumed absent. The linearized system of equations for perturbations in the magnetic field, velocity, and temperature is presented and solved for growth rates much larger than one. It is concluded that the linear interaction of the RTI mode with the thermal model can provide an efficient mechanism for stabilizing the aperiodic RTI.
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