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Result of the MICROSCOPE weak equivalence principle test

Touboul, Pierre and Métris, Gilles and Rodrigues, Manuel and Bergé, Joel and Robert, Alain and Baghi, Quentin and André, Yves and Bedout, Judicael and Boulanger, Damien and Bremer, Stefanie and Carle, Patrice and Chhun, Ratana and Christophe, Bruno and Cipolla, Valerio and Damour, Thibault and Danto, Pascale and Demange, Louis and Dittus, Hansjoerg and Dhuicque, Océane and Fayet, Pierre and Foulon, Bernard and Guidotti, Pierre-Yves and Hagedorn, Daniel and Hardy, Emilie and Huynh, Phuong-Anh and Kayser, Patrick and Lala, Stephanie and Lämmerzahl, Claus and Lebat, Vincent and Liorzou, Françoise and List, Meike and Löffler, Frank and Panet, Isabelle and Pernot-Borràs, Martin and Perraud, Laurent and Pires, Sandrine and Pouilloux, Benjamin and Prieur, Pascal and Rebray, Alexandre and Reynaud, Serge and Rievers, Benny and Selig, Hanns and Serron, Laura and Sumner, Timothy and Tanguy, Nicolas and Torresi, Patrizia and Visser, Pieter (2022) Result of the MICROSCOPE weak equivalence principle test. Classical and Quantum Gravity, 39 (20), p. 204009. Institute of Physics (IOP) Publishing. doi: 10.1088/1361-6382/ac84be. ISSN 0264-9381.

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Official URL: https://dx.doi.org/10.1088/1361-6382/ac84be

Abstract

The space mission MICROSCOPE dedicated to the test of the equivalence principle (EP) operated from April 25, 2016 until the deactivation of the satellite on October 16, 2018. In this analysis we compare the free-fall accelerations (a_A and a_B) of two test masses in terms of the Eötvös parameter ETA. No EP violation has been detected for two test masses, made from platinum and titanium alloys, in a sequence of 19 segments lasting from 13 to 198 h down to the limit of the statistical error which is smaller than 1e-14 for ETA(Ti, Pt). Accumulating data from all segments leads to ETA(Ti, Pt) = [-1.5 ± 2.3 (stat) ± 1.5 (syst)] × 1e-15 showing no EP violation at the level of 2.7 × 1e-15 if we combine stochastic and systematic errors quadratically. This represents an improvement of almost two orders of magnitude with respect to the previous best such test performed by the Eöt-Wash group. The reliability of this limit has been verified by comparing the free falls of two test masses of the same composition (platinum) leading to a null Eötvös parameter with a statistical uncertainty of 1.1 × 1e-15.

Item URL in elib:https://elib.dlr.de/193667/
Document Type:Article
Title:Result of the MICROSCOPE weak equivalence principle test
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Touboul, PierreONERA, PalaiseauUNSPECIFIEDUNSPECIFIED
Métris, GillesUniversité Côte d'Azur, Observatoire de la Côte d'Azur, CNRSUNSPECIFIEDUNSPECIFIED
Rodrigues, ManuelONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Bergé, JoelONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Robert, AlainCNES, ToulouseUNSPECIFIEDUNSPECIFIED
Baghi, QuentinUniversité Côte d'Azur, Observatoire de la Côte d'Azur, CNRSUNSPECIFIEDUNSPECIFIED
André, YvesCNES, ToulouseUNSPECIFIEDUNSPECIFIED
Bedout, JudicaelONERA, ToulouseUNSPECIFIEDUNSPECIFIED
Boulanger, DamienONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Bremer, StefanieUNSPECIFIEDhttps://orcid.org/0000-0002-8091-0121UNSPECIFIED
Carle, PatriceONERA, PalaiseauUNSPECIFIEDUNSPECIFIED
Chhun, RatanaONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Christophe, BrunoONERA, ChatillonUNSPECIFIEDUNSPECIFIED
Cipolla, ValerioCNES, ToulouseUNSPECIFIEDUNSPECIFIED
Damour, ThibaultIHES, Institut des Hautes Etudes ScientifiquesUNSPECIFIEDUNSPECIFIED
Danto, PascaleCNES, ToulouseUNSPECIFIEDUNSPECIFIED
Demange, LouisUniversité Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, FranceUNSPECIFIEDUNSPECIFIED
Dittus, HansjoergDLR, KölnUNSPECIFIEDUNSPECIFIED
Dhuicque, OcéaneONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Fayet, PierreUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Foulon, BernardONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Guidotti, Pierre-YvesCNES, ToulouseUNSPECIFIEDUNSPECIFIED
Hagedorn, DanielPTB, BraunschweigUNSPECIFIEDUNSPECIFIED
Hardy, EmilieONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Huynh, Phuong-AnhONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Kayser, PatrickONERA, PalaiseauUNSPECIFIEDUNSPECIFIED
Lala, StephanieONERA, PalaiseauUNSPECIFIEDUNSPECIFIED
Lämmerzahl, ClausZentrum für angewandte Raumfahrttechnologie und Mikrogravitation (ZARM), Universität Bremen, Bremen, GermanyUNSPECIFIEDUNSPECIFIED
Lebat, VincentONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Liorzou, FrançoiseONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
List, MeikeUNSPECIFIEDhttps://orcid.org/0000-0002-5268-5633UNSPECIFIED
Löffler, FrankPTB, BraunschweigUNSPECIFIEDUNSPECIFIED
Panet, IsabelleIGN, Institut géographique national, Saint MandéUNSPECIFIEDUNSPECIFIED
Pernot-Borràs, MartinONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Perraud, LaurentCNES, ToulouseUNSPECIFIEDUNSPECIFIED
Pires, SandrineLaboratoire AIM, CEA, CNRS, Gif-sur-YvetteUNSPECIFIEDUNSPECIFIED
Pouilloux, BenjaminCNES, ToulouseUNSPECIFIEDUNSPECIFIED
Prieur, PascalCNES, ToulouseUNSPECIFIEDUNSPECIFIED
Rebray, AlexandreONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Reynaud, SergeLaboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL UniversitéUNSPECIFIEDUNSPECIFIED
Rievers, BennyZARM, Univ. Bremenhttps://orcid.org/0000-0003-4231-9362UNSPECIFIED
Selig, HannsZARM, Univ. BremenUNSPECIFIEDUNSPECIFIED
Serron, LauraONERA, PalaiseauUNSPECIFIEDUNSPECIFIED
Sumner, TimothyBlackett Laboratory, Imperial College LondonUNSPECIFIEDUNSPECIFIED
Tanguy, NicolasONERA, ChâtillonUNSPECIFIEDUNSPECIFIED
Torresi, PatriziaCNES, ToulouseUNSPECIFIEDUNSPECIFIED
Visser, PieterTU DelftUNSPECIFIEDUNSPECIFIED
Date:14 September 2022
Journal or Publication Title:Classical and Quantum Gravity
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:39
DOI:10.1088/1361-6382/ac84be
Page Range:p. 204009
Publisher:Institute of Physics (IOP) Publishing
ISSN:0264-9381
Status:Published
Keywords:MICROSCOPE, general relativity, experimental gravitation, equivalence principle, space mission, space accelerometers, Eötvös parameter
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Bremen
Institutes and Institutions:Institute for Satellite Geodesy and Inertial Sensing > Relativistic Modelling
Deposited By: Bremer, Dr.-Ing. Stefanie
Deposited On:04 Feb 2023 12:03
Last Modified:06 Feb 2023 09:26

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