Resonant absorption of surface sausage and surface kink modes under photospheric conditions [SSA]

http://arxiv.org/abs/1710.03350


We study the effect of resonant absorption of surface sausage and surface kink modes under photospheric conditions where the slow surface sausage modes undergo resonant damping in the slow continuum and the surface kink modes in the slow and Alfv\'{e}n continua at the transitional layers. We use recently derived analytical formulas to obtain the damping rate (time). By considering linear density and linear pressure profiles for the transitional layers, we show that resonant absorption in the slow continuum could be an efficient mechanism for the wave damping of the slow surface sausage and slow surface kink modes whilst the damping rate of the slow surface kink mode in the Alfv\'{e}n continuum is weak. It is also found that the resonant damping of the fast surface kink mode is much stronger than that of the slow surface kink mode, showing a similar efficiency as under coronal conditions. It is worth to notice that the slow body sausage and kink modes can also resonantly damp in the slow continuum for those linear profiles.

Read this paper on arXiv…

D. Yu, T. Doorsselaere and M. Goossens
Wed, 11 Oct 17
47/65

Comments: 19 pages, 13 figures, accepted in ApJ