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About the rotation of the solar radiative interior |
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| Authors: | RA GarcÍa T Corbard WJ Chaplin S Couvidat A Eff-Darwich SJ Jiménez-Reyes SG Korzennik J Ballot P Boumier E Fossat CJ Henney R Howe M Lazrek J Lochard PL Pallé S Turck-Chièze |
| Institution: | 1. Service d'Astrophysique, CEA/DSM/DAPNIA, CE Saclay, 91191, Gif sur Yvette, France 2. Département Cassini, UMR CNRS 6529, Observatoire de la C?te d'Azur, BP 4229, 06304, Nice Cedex 4, France 3. School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, U.K. 4. HEPL, Stanford University, Stanford, CA, 94305-4085, U.S.A. 5. THEMIS S.L., 38205, La Laguna, Tenerife, Spain 6. Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain 7. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA, 02138, U.S.A. 8. Institut d'Astrophysique Spatiale, Université Paris XI, 91405, Orsay, France 9. Département d'Astrophysique, Université de Nice-Sophia Antipolis, UMR 6525, 06108, Nice Cedex 2, France 10. National Solar Observatory, P.O. Box 26732, Tucson, AZ, 85726-6732, U.S.A. 11. Laboratoire de Physique des Hautes Energies et Astrophysique (LPHEA), Universite Cady Ayyad de Marrakech, BP 2390, Marrakech, Morocco 12. LESIA, Observatoire de Paris-Meudon, 92195, Meudon Principal Cedex, France |
| Abstract: | In the modern era of helioseismology we have a wealth of high-quality data available, e.g., more than 6 years of data collected by the various instruments on board the SOHO mission, and an even more extensive ground-based set of observations covering a full solar cycle. Thanks to this effort a detailed picture of the internal rotation of the Sun has been constructed. In this paper we present some of the actions that should be done to improve our knowledge of the inner rotation profile discussed during the workshop organized at Saclay on June 2003 on this topic. In particular we will concentrate on the extraction of the rotational frequency splittings of low- and medium-degree modes and their influence on the rotation of deeper layers. Furthermore, for the first time a full set of individual |m|-component rotational splittings is computed for modes ℓ≤4 and 1<ν<2 mHz, opening new studies on the latitudinal dependence of the rotation rate in the radiative interior. It will also be shown that these splittings have the footprints of the differential rotation of the convective zone which can be extremely useful to study the differential rotation of other stars where only these low-degree modes will be available. |
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