Radiative zone solar magnetic fields and g-modes

Details Radiative zone solar magnetic fields and g-modes Radiative zone solar magnetic fields and g-modes

2005-11-24

arxiv.org/abs/astro-ph/0511708v2

Mon.Not.Roy.Astron.Soc.370:845,2006; Mon.Not.Roy.Astron.Soc.370:845-850,2006

Astronomy and Astrophysics

Astrophysics

6 pages, 4 figures; final version to appear in MNRAS

Scientific paper

10.1111/j.1365-2966.2006.10516.x

We consider a generalized model of seismic-wave propagation that takes into account the effect of a central magnetic field in the Sun. We determine the g-mode spectrum in the perturbative magnetic field limit using a one-dimensional Magneto-Hydrodynamics (MHD) picture. We show that central magnetic fields of about 600-800 kG can displace the pure g-mode frequencies by about 1%, as hinted by the helioseismic interpretation of GOLF observations.

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