3D simulations of damping of waves in a loop anchored in a dipole active region: does resonant absorption take place in realistic loops?

Details 3D simulations of damping of waves in a loop anchored in a dipole active region: does resonant absorption take place in realistic loops? 3D simulations of damping of waves in a loop anchored in a dipole active region: does resonant absorption take place in realistic loops?

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsh53a1056s&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SH53A-1056

Physics

7509 Corona, 7524 Magnetic Fields, 7836 Mhd Waves And Instabilities (2149, 2752, 6050)

Scientific paper

We present numerical results of three dimensional MHD model of an idealized active region field. The active region is initialized as a force-free dipole magnetic configuration with gravitationally stratified density and contains a loop with a higher density than its surroundings. This study represents an extension to the model of McLaughlin & Ofman (2007). We examine the impact of different density profiles of the loop on damping of kink waves by introducing a velocity pulse which models the impact of a flare on surrounding fields. We compare our results with a straight cylinder model of the loop which can be solved analytically. We study the resulting loop oscillations and compare our results with TRACE observations.

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