Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hia....15..348k&link_type=abstract
Highlights of Astronomy, Volume 15, p. 348-348
Astronomy and Astrophysics
Astronomy
Sun: Magnetic Fields, Oscillations, Sunspots, Convection, Turbulence, Methods: Numerical
Scientific paper
It is known that physical properties of solar turbulent convection and oscillations strongly depend on magnetic field. In particular, recent observations from SOHO/MDI revealed significant changes of the wave properties in inclined magnetic field regions of sunspots, which affect helioseismic inferences. We use realistic 3D radiative MHD numerical simulations to investigate solar convection and oscillations and their relationship in the presence of inclined magnetic field. In the case of highly inclined and strong 1-1.5 kG field the solar convection develops filamentary structure and high-speed flows (Fig. 1a), which provide an explanation to the Evershed effect in sunspot penumbra (Kitiashvili, et al. 2009).
Kitiashvili Irina N.
Kosovichev Alexander G.
Mansour Nagi N.
Wray Alan A.
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