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PRECISION MEASUREMENT OF GRAVITATIONAL FREQUENCY SHIFT OF ELECTROMAGNETIC SIGNALS
- Authors: Rudenko V.N.1, Belonenko A.V.1, Gusev A.V.1, Gurin F.S.1, Kulagin V.V.1, Popov S.M.1, Manucharyan G.D.1,2, Zakhvatkin M.V.3, Kovalenko A.V.4
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Affiliations:
- Sternberg State Astronomical Institute, Lomonosov Moscow State University
- Bauman Moscow State Technical University
- Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences
- Lebedev Physical Institute of the Russian Academy of Sciences
- Issue: Vol 166, No 5 (2024)
- Pages: 632-640
- Section: NUCLEI, PARTICLES, FIELDS, GRAVITY AND ASTROPHYSICS
- URL: https://bakhtiniada.ru/0044-4510/article/view/268672
- DOI: https://doi.org/10.31857/S0044451024110063
- ID: 268672
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Abstract
Communication radio signals between an orbital spacecraft (SC) and a ground tracking station (GTS) experience a frequency shift proportional to the positional difference of their gravitational potentials. The effect constitutes an experimental basis of the general theory of relativity (GR) as one of the aspects of Einstein's equivalence principle (EEP). The article presents the results of precision measurement of the effect using frequency standards placed on the SC and GTS. Data from special “gravitational sessions” of radio communication accumulated during the “RadioAstron” (RA) space radio telescope mission in 2015–2019 were used. Scrupulous analysis of these data allows to confirm the correspondence between theory and experiment with high accuracy: the violation parameter (deviation from GR) was 1.57 ± 3.96 · 10−5.
About the authors
V. N. Rudenko
Sternberg State Astronomical Institute, Lomonosov Moscow State University
Email: valentin.rudenko@gmail.com
Russian Federation, 119992, Moscow
A. V. Belonenko
Sternberg State Astronomical Institute, Lomonosov Moscow State University
Email: valentin.rudenko@gmail.com
Russian Federation, 119992, Moscow
A. V. Gusev
Sternberg State Astronomical Institute, Lomonosov Moscow State University
Email: valentin.rudenko@gmail.com
Russian Federation, 119992, Moscow
F. S. Gurin
Sternberg State Astronomical Institute, Lomonosov Moscow State University
Email: valentin.rudenko@gmail.com
Russian Federation, 119992, Moscow
V. V. Kulagin
Sternberg State Astronomical Institute, Lomonosov Moscow State University
Email: valentin.rudenko@gmail.com
Russian Federation, 119992, Moscow
S. M. Popov
Sternberg State Astronomical Institute, Lomonosov Moscow State University
Email: valentin.rudenko@gmail.com
Russian Federation, 119992, Moscow
G. D. Manucharyan
Sternberg State Astronomical Institute, Lomonosov Moscow State University; Bauman Moscow State Technical University
Email: valentin.rudenko@gmail.com
Russian Federation, 119992, Moscow; 105005, Moscow
M. V. Zakhvatkin
Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences
Email: valentin.rudenko@gmail.com
Russian Federation, 125047, Moscow
A. V. Kovalenko
Lebedev Physical Institute of the Russian Academy of Sciences
Author for correspondence.
Email: valentin.rudenko@gmail.com
Russian Federation, 119991, Moscow
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