A multipole analysis of the apparent motion of reference radio sources
| Autor: | M. V. Sazhin, O. S. Sazhina, M. N. Siversky, Vladimir Zharov, K. V. Kuimov, V. N. Sementsov |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
International Celestial Reference System 010308 nuclear & particles physics Mathematical analysis General Physics and Astronomy Kinematics 01 natural sciences Acceleration Classical mechanics 0103 physical sciences Multipole expansion 010303 astronomy & astrophysics Vector-valued function Rotation (mathematics) Astrophysics::Galaxy Astrophysics Rotation group SO Barycentric celestial reference system |
| Zdroj: | Moscow University Physics Bulletin. 71:309-316 |
| ISSN: | 1934-8460 0027-1349 |
| Popis: | In this paper, the apparent motions of quasars, which are the reference sources of the international celestial reference system (ICRS), are analyzed. Kinematic parameters from four catalogs compiled by different research groups are used. Apparent motions are expanded on a special set of vector functions on the sphere that are an irreducible representation of the rotation group O(3). The degree of the noninertiality of the barycentric reference system caused by the rotation of the solar system around the galactic center is estimated according to expansion coefficients. The direction and magnitude of the acceleration vector are calculated and compared with the alternative estimates. This method is discussed as a way to test Newton’s law on a large scale. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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