Test of Convective Frequency Effects with SOI/MDI High-Degree Data

Details Test of Convective Frequency Effects with SOI/MDI High-Degree Data Test of Convective Frequency Effects with SOI/MDI High-Degree Data

1998-07-07

arxiv.org/abs/astro-ph/9807066v1

Astronomy and Astrophysics

Astrophysics

5 pages, 5 figures, To appear in "Structure and Dynamics of the Interior of the Sun and Sun-like Stars", full reference availa

Scientific paper

Advances in hydrodynamical simulations have provided new insights into the effects of convection on the frequencies of solar oscillations. As more accurate observations become available, this may lead to an improved understanding of the dynamics of convection and the interaction between convection and pulsation (\cite{Rosenthal+99}). Recent high-resolution observations from the SOI/MDI instrument on the SOHO spacecraft have provided the so-far most-detailed observations of high-degree modes of solar oscillations, which are particularly sensitive to the near-surface properties of the Sun. Here we present preliminary results of a comparison between these observations and frequencies computed for models based on realistic simulations of near-surface convection. Such comparisons may be expected to help in identifying the causes of the remaining differences between the observed frequencies and those of solar models.

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