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Herrmann S, Finke F, Lülf M, Kichakova O, Puetzfeld D, Knickmann D, List M, Rievers B, Giorgi G, Günther C, Dittus H, Prieto-Cerdeira R, Dilssner F, Gonzalez F, Schönemann E, Ventura-Traveset J, Lämmerzahl C. Test of the Gravitational Redshift with Galileo Satellites in an Eccentric Orbit. Phys Rev Lett 2018; 121:231102. [PMID: 30576165 DOI: 10.1103/physrevlett.121.231102] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 09/17/2018] [Indexed: 06/09/2023]
Abstract
On August 22, 2014, the satellites GSAT-0201 and GSAT-0202 of the European GNSS Galileo were unintentionally launched into eccentric orbits. Unexpectedly, this has become a fortunate scientific opportunity since the onboard hydrogen masers allow for a sensitive test of the redshift predicted by the theory of general relativity. In the present Letter, we describe an analysis of approximately three years of data from these satellites including three different clocks. For one of these, we determine the test parameter quantifying a potential violation of the combined effects of the gravitational redshift and the relativistic Doppler shift. The uncertainty of our result is reduced by more than a factor 4 as compared to the values of Gravity Probe A obtained in 1976.
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Affiliation(s)
- Sven Herrmann
- University of Bremen, ZARM Center of Applied Space Technology and Microgravity, Bremen 28359, Germany
| | - Felix Finke
- University of Bremen, ZARM Center of Applied Space Technology and Microgravity, Bremen 28359, Germany
| | - Martin Lülf
- Technical University Munich, Munich 80333, Germany
| | - Olga Kichakova
- University of Bremen, ZARM Center of Applied Space Technology and Microgravity, Bremen 28359, Germany
| | - Dirk Puetzfeld
- University of Bremen, ZARM Center of Applied Space Technology and Microgravity, Bremen 28359, Germany
| | | | - Meike List
- University of Bremen, ZARM Center of Applied Space Technology and Microgravity, Bremen 28359, Germany
| | - Benny Rievers
- University of Bremen, ZARM Center of Applied Space Technology and Microgravity, Bremen 28359, Germany
| | - Gabriele Giorgi
- Deutsches Zentrum für Luft- und Raumfahrt, Oberpfaffenhofen-Wessling 82234, Germany
| | - Christoph Günther
- Technical University Munich, Munich 80333, Germany
- Deutsches Zentrum für Luft- und Raumfahrt, Oberpfaffenhofen-Wessling 82234, Germany
| | - Hansjörg Dittus
- Deutsches Zentrum für Luft- und Raumfahrt, Köln 51147, Germany
| | | | - Florian Dilssner
- European Space Operations Centre, ESA ESOC, Darmstadt 64293, Germany
| | - Francisco Gonzalez
- European Space and Technology Centre, ESA ESTEC, AZ Noordwijk 2201, Netherlands
| | - Erik Schönemann
- European Space Operations Centre, ESA ESOC, Darmstadt 64293, Germany
| | | | - Claus Lämmerzahl
- University of Bremen, ZARM Center of Applied Space Technology and Microgravity, Bremen 28359, Germany
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Puetzfeld D, Obukhov YN. Erratum: Propagation equations for deformable test bodies with microstructure in extended theories of gravity [Phys. Rev. D76, 084025 (2007)]. Int J Clin Exp Med 2009. [DOI: 10.1103/physrevd.79.069902] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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