3D MHD Simulation of the Interaction of Fast Magnetosonic Waves and a Coronal Active Region

Details 3D MHD Simulation of the Interaction of Fast Magnetosonic Waves and a Coronal Active Region 3D MHD Simulation of the Interaction of Fast Magnetosonic Waves and a Coronal Active Region

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.547..469t&link_type=abstract

Proceedings of 'SOHO 13 - Waves, Oscillations and Small-Scale Transient Events in the Solar Atmosphere: A Joint View from SOHO a

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Scientific paper

We present a three-dimensional MHD simulation of the local interaction between fast magnetoacoustic waves and a coronal active region observed with the Transition Region and Coronal Explorer (TRACE) on June 13, 1998. The 3D MHD model is initiated with the active region magnetic field calculated from the extrapolation of photospheric magnetograms. The corona is assumed to be isothermal and resistive dissipation is included in the model. We compare the main features of the simulated wave with the wave observed with TRACE. We find that many aspects of the simulation match the observations. In particular, we show how the wave's trajectory is modified, undergoing strong reflection and refraction away from the active region.

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