Nonlinear Viscous Damping of Surface AlfvÉn Waves in Polar Coronal Holes

Details Nonlinear Viscous Damping of Surface AlfvÉn Waves in Polar Coronal Holes Nonlinear Viscous Damping of Surface AlfvÉn Waves in Polar Coronal Holes

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998soph..181..287n&link_type=abstract

Solar Physics, v. 181, Issue 2, p. 287-287 (1998).

Physics

2

Scientific paper

We quantitatively re-examine the nonlinear viscous damping of surface Alfvén waves in polar coronal holes, using recently reported observational data on electron density and temperature and the magnetic field spreading near the edges. It is found that in the nonlinear regime the viscous damping of surface Alfvén waves becomes a viable mechanism of solar coronal plasma heating when strong spreading of magnetic field is taken into account. Our estimations confirm that coronal heating is more pronounced in the nonlinear case than in the linear one in presence of magnetic field spreading.

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