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Rotation of the solar core from BiSON and LOWL frequency observations |
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| Authors: | W J Chaplin J Christensen-Dalsgaard Y Elsworth R Howe G R Isaak R M Larsen R New J Schou M J Thompson S Tomczyk |
| Affiliation: | Space Science Department, ESTEC, PO Box 299, 2200AG, Noordwijk, the Netherlands; Teoretisk Astrofysik Center, Danmarks Grundforskningsfond, and Institut for Fysik og Astronomi, Aarhus Universitet, DK-8000 Aarhus C, Denmark; School of Physics and Space Research, University of Birmingham, Edgbaston, Birmingham B15 2TT; National Solar Observatory, PO Box 26732, Tucson, AZ 85726-6732, USA; Datalogisk Institut, Aarhus Universitet, DK-8000 Aarhus C, Denmark; School of Science and Mathematics, Sheffield Hallam University, Sheffield S1 1WB; Center for Space Science and Astrophysics, Stanford University, Stanford, CA 94305, USA; Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, Mile End Road, London E1 4NS; High Altitude Observatory, National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307, USA |
| Abstract: | Determination of the rotation of the solar core requires very accurate data on splittings for the low-degree modes which penetrate to the core, as well as for modes of higher degree to suppress the contributions from the rest of the Sun to the splittings of the low-degree modes. Here we combine low-degree data based on 32 months of observations with the BiSON network and data from the LOWL instrument. The data are analysed with a technique that specifically aims at obtaining an inference of rotation that is localized to the core. Our analysis provides what we believe is the most stringent constraint to date on the rotation of the deep solar interior. |
| Keywords: | Sun: interior Sun: oscillations Sun: rotation |
