DE.5.01 — Nonlinear Wave Coupling of Torsional Alfvén Waves in the Solar Atmosphere

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Aug 10th at 8:30 AM until 8:40 AM

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Author(s): Zdzislaw Musielak2, Krzysztof Murawski1

Institution(s): 1. UMCS, 2. University of Texas Arlington

There is strong observational evidence for the existence of torsional Alfvén waves in the solar atmosphere. The waves propagate inside solar magnetic flux tubes and transfer energy to the
solar chromosphere and corona. We present analytical and numerical models that describe the
process of nonlinear wave coupling, and use them to determine the efficiency of the process and
its effect on dissipation of energy carried by the waves. Our numerical models involve the wave propagation along 3D solar magnetic flux tubes, and they are used to identify regions in the solar atmosphere where maximum amounts of the wave energy can be dissipated. By comparing our
results to the heating rates observed in different parts of the solar atmosphere, are able to determine
the role played by torsional Alfvén waves in the heating of the solar chromospheres and corona