Estimate of solar radius from f-mode frequencies

Antia, H. M. (1998) Estimate of solar radius from f-mode frequencies Astronomy and Astrophysics, 330 . pp. 336-340. ISSN 0004-6361

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Frequency and rotational splittings of the solar f-modes are estimated from the GONG data. Contrary to earlier observations the frequencies of f-modes are found to be close to the theoretically computed values for a standard solar model. The f-mode being essentially a surface mode is a valuable diagnostic probe of the properties of the solar surface, and also provides an independent measure of solar radius. The estimated solar radius is found to be about 0.03% less than what is traditionally used in construction of standard solar models. If this decrease in solar radius is confirmed then the current solar models as well as inversion results will need to be revised. The rotational splittings of the f-modes yield an independent measure of the rotation rate near the solar surface, which is compared with other measurements.

Item Type:Article
Source:Copyright of this article belongs to EDP Sciences.
Keywords:Sun: Oscillations; Sun: Rotation
ID Code:75615
Deposited On:24 Dec 2011 15:06
Last Modified:24 Dec 2011 15:06

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