Physics
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...254..318i&link_type=abstract
Astrophysical Journal, Part 1, vol. 254, Mar. 1, 1982, p. 318-334.
Physics
144
Coronal Loops, Magnetohydrodynamic Shear Heating, Solar Corona, Stellar Coronas, Stellar Temperature, Electrodynamics, Particle Collisions, Photosphere, Rlc Circuits, Stellar Atmospheres, Stellar Magnetic Fields, Stellar Models, Velocity Distribution
Scientific paper
The problem of electrodynamic coupling of stellar coronal loops where beta is less than 1 to underlying velocity fields where beta is greater than approximately 1 is treated. A rigorous analysis reveals that the physics can be represented by a simple yet equivalent LRC circuit analog. This derived analog suggests the existence of global structure oscillations which resonantly excite internal field line oscillations at a spatial resonance within the coronal loop. Even though the width of this spatial resonance, as well as the induced currents and coronal velocity field, within the resonance region explicitly depends on viscosity and resistivity, the resonant form of the generalized electrodynamic heating functions is virtually independent of irreversibilities. This is a classic feature of high-quality resonators that are driven externally by a broad-band source of spectral power.
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