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Observed Power and Frequency Variations of Solar Rossby Waves with Solar Cycles

Autor: Waidele, M., Zhao, Junwei

Several recent studies utilizing different helioseismic methods have confirmed the presence of large-scale vorticity waves known as solar Rossby waves within the Sun. Rossby waves are distinct from acoustic waves, typically with longer periods and li

Externí odkaz: http://arxiv.org/abs/2308.07040

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Non-zero phase-shifts of acoustic waves in the lower solar atmosphere measured from realistic simulations and their role in local helioseismology

Autor: Waidele, M., Zhao, Junwei, Kitiashvili, I. N.

Previous studies analyzing the evanescent nature of acoustic waves in the lower solar atmosphere, up to 300\,km above the photosphere, have shown an unexpected phase shift of an order of 1\,s between different heights. Those studies investigated the

Externí odkaz: http://arxiv.org/abs/2304.02057

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Investigation of surface effects of simple flux tubes using numerical simulations

Autor: Waidele, M., Roth, M.

Publikováno v: ApJ, 889, 83 (2020)

We use the SPARC code for MHD simulations with monolithic flux tubes of varying subsurface topology. Our studies involve the interactions of waves caused by a single source with subsurface magnetic fields. Mode conversion causing acoustic power to tr

Externí odkaz: http://arxiv.org/abs/2001.11798

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