Abstract
Coronal heating is one of the unresolved puzzles in solar physics from decades. In the present paper we have investigated the dynamics of vortices to apprehend coronal heating problem. A three dimensional (3d) model has been developed to study propagation of dispersive Alfvén waves (DAWs) in presence of ion acoustic waves which results in excitation of DAW and evolution of vortices. Taking ponderomotive nonlinearity into account, development of these vortices has been studied. There are observations of such vortices in the chromosphere, transition region and also in the lower solar corona. These structures may play an important role in transferring energy from lower solar atmosphere to corona and result in coronal heating. Nonlinear interaction of these waves is studied in view of recent simulation work and observations of giant magnetic tornadoes in solar corona and lower atmosphere of sun by solar dynamical observatory (SDO).
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Acknowledgements
This work is partially supported by the Council for Scientific and Industrial Research (CSIR), Indian Space Research Organization (ISRO) under RESPOND program and the Department of Science and Technology (DST), India.
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Sharma, R.P., Yadav, N. & Pathak, N. Role of 3d-dispersive Alfven waves in coronal heating. Astrophys Space Sci 351, 75–80 (2014). https://doi.org/10.1007/s10509-014-1845-7
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DOI: https://doi.org/10.1007/s10509-014-1845-7