On helioseismic tests of basic physics |
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| Authors: | J Christensen-Dalsgaard M P Di Mauro H Schlattl A Weiss |
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| Institution: | Institut for Fysik og Astronomi, Aarhus Universitet, Bygn. 520, Ny Munkegade, DK-8000 Aarhus C, Denmark;INAF –Osservatorio Astrofisico di Catania, Via S. Sofia 78, 95123 Catania, Italy;Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD;Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, 85748 Garching, Germany |
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| Abstract: | An important goal of helioseismology is to provide information about the basic physics and parameters that determine the structure of the solar interior. Here we discuss the procedures applied in such analyses, using as an example attempts to obtain significant constraints on the value of Newton's gravitational constant G from helioseismology. The analysis is based on complete direct and inverse helioseismic analysis of a set of accurate observed acoustic frequencies. We confirm, as found by previous investigations based on different approaches, that the actual level of precision of the helioseismic inferences does not allow us to constrain G with a precision better than that which can be reached with direct experimental measurements. The conclusion emphasizes the importance in helioseismic inferences of considering not only the accuracy with which solar oscillations are measured, but also the effect of uncertainties in other aspects of the model computation and helioseismic analysis. |
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| Keywords: | Sun: fundamental parameters Sun: helioseismology Sun: interior cosmological parameters |
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