Nonlinear magnetohydrodynamics of footpoint-driven coronal loops.

Details Nonlinear magnetohydrodynamics of footpoint-driven coronal loops. Nonlinear magnetohydrodynamics of footpoint-driven coronal loops.

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...306..610p&link_type=abstract

Astronomy and Astrophysics, v.306, p.610

Astronomy and Astrophysics

Astrophysics

29

Sun: Corona, Magnetic Fields, Oscillations, Mhd, Methods: Numerical

Scientific paper

Results are presented from magnetohydrodynamic (MHD) simulations of the phase-mixing and resonant absorption of standing torsional Alfven waves generated by motion at the footpoint of a line-tied coronal loop with axial symmetry. The high wave amplitudes that develop in the resonant layer cause nonlinear effects and the driven coronal loop does not evolve to a stationary state in contrast to linear MHD results. The energetics of a monochromatically driven coronal loop show that resonant heating can be very efficient even in the absence of global modes.

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