f-mode strengthening from a localised bipolar subsurface magnetic field

N. Singh; H. Raichur; M. Käpylä; M. Rheinhardt; A. Brandenburg; P. J. Käpylä

DOI:10.1080/03091929.2019.1653461

Corpus ID: 54737464

f-mode strengthening from a localised bipolar subsurface magnetic field

@article{Singh2019fmodeSF,
  title={f-mode strengthening from a localised bipolar subsurface magnetic field},
  author={N. Singh and H. Raichur and M. K{\"a}pyl{\"a} and M. Rheinhardt and A. Brandenburg and P. J. K{\"a}pyl{\"a}},
  journal={Geophysical & Astrophysical Fluid Dynamics},
  year={2019},
  volume={114},
  pages={196 - 212}
}

N. Singh, H. Raichur, +3 authors P. J. Käpylä

Published 2019

Physics

Geophysical & Astrophysical Fluid Dynamics

ABSTRACT Recent numerical work in helioseismology has shown that a periodically varying subsurface magnetic field leads to a fanning of the f-mode, which emerges from a density jump at the surface. In an attempt to model a more realistic situation, we now modulate this periodic variation with an envelope, giving thus more emphasis on localised bipolar magnetic structures in the middle of the domain. Some notable findings are: (i) compared to the purely hydrodynamic case, the strength of the f… CONTINUE READING

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