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Resonant electrodynamic heating of stellar coronal loops: An LRC circuit analogueThe electrodynamic coupling of stellar coronal loops to underlying beta velocity fields. A rigorous analysis revealed that the physics can be represented by a simple yet equivalent LRC circuit analogue. This analogue points to the existence of global structure oscillations which resonantly excite internal field line oscillations at a spatial resonance within the coronal loop. Although the width of this spatial resonance, as well as the induced currents and coronal velocity field, explicitly depend upon viscosity and resistivity, the resonant form of the generalized electrodynamic heating function is virtually independent of irreversibilities. This is a classic feature of high quality resonators that are externally driven by a broad band source of spectral power. Applications to solar coronal loops result in remarkable agreement with observations.
Document ID
19810011456
Acquisition Source
Legacy CDMS
Document Type
Preprint (Draft being sent to journal)
Authors
Ionson, J. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 4, 2013
Publication Date
December 1, 1980
Subject Category
Astrophysics
Report/Patent Number
NASA-TM-82065
Accession Number
81N19984
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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