Comments on Viscous Damping of Non-Adiabatic MHD Waves in an Unbounded Solar Coronal Plasma by Kumar and Kumar

Details Comments on Viscous Damping of Non-Adiabatic MHD Waves in an Unbounded Solar Coronal Plasma by Kumar and Kumar Comments on Viscous Damping of Non-Adiabatic MHD Waves in an Unbounded Solar Coronal Plasma by Kumar and Kumar

2006-11-08

arxiv.org/abs/astro-ph/0611252v2

Astronomy and Astrophysics

Astrophysics

8 pages, 1 figure

Scientific paper

Considering thermal conduction, compressive viscosity and optically thin radiation as damping mechanisms for MHD waves, we derive a six-order general dispersion relation. We point out a fundamental flaw in the derivation of five-order dispersion relation by Kumar and Kumar (2006) who adopt as a basis vector. The correct definition of the motion in the x-z plane (2-D vector space) stems from the two independent variables, namely .

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