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Numerical simulations of impulsively excited magnetosonic waves in two parallel solar coronal slabs  

Rafal Ogrodowczyk   Submitted: 2006-09-14 02:05

Aims. We investigate impulsively excited magnetosonic waves in a finely structured coronal loop that is modeled by a system of two parallel strands. Methods. The equilibrium model is described by the time-dependent ideal magnetodydrodynamic equations which are solved numerically. Results. Numerical simulations reveal that signatures of these waves in wavelet spectra depend on the distance between the strands and on the position of the initial pulse. In all cases, these spectra display complex structures which correspond to short- and long-period waves. We find that with increasing distance between the strands, short-period waves dominate the wavelet spectra. Conclusions. We demonstrate that the presence of a second strand affects wave propagation compared with one strand alone.

Authors: Rafal Ogrodowczyk and Kris Murawski
Projects: TRACE

Publication Status: A&A (accepted)
Last Modified: 2006-09-14 02:05
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Numerical simulations of impulsively excited magnetosonic waves in two parallel solar coronal slabs

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