[article] Titre : |
Result of the MICROSCOPE weak equivalence principle test |
Type de document : |
Article/Communication |
Auteurs : |
Pierre Touboul, Auteur ; Gilles Métris, Auteur ; Manuel Rodrigues, Auteur ; et al., Auteur ; Isabelle Panet , Auteur |
Année de publication : |
2022 |
Article en page(s) : |
n° 2004009 |
Note générale : |
bibliographie
Pierre Touboul, Gilles Métris, Manuel Rodrigues, Joel Bergé, Alain Robert, Quentin Baghi, Yves André, Judicael Bedouet, Damien Boulanger, Stefanie Bremer, Patrice Carle, Ratana Chhun, Bruno Christophe, Valerio Cipolla, Thibault Damour, Pascale Danto, Louis Demange, Hansjoerg Dittus, Océane Dhuicque, Pierre Fayet, Bernard Foulon, Pierre-Yves Guidotti, Daniel Hagedorn, Emilie Hardy, Phuong-Anh Huynh, Patrick Kayser, Stephanie Lala, Claus Lämmerzah, Vincent Lebat, Françoise Liorzou, Meike List, Frank Löffler, Isabelle Panet, Martin Pernot-Borràs, Laurent Perraud, Sandrine Pires, Benjamin Pouilloux, Pascal Prieur, Alexandre Rebray, Serge Reynaud, Benny Rievers, Hanns Selig, Laura Serron, Timothy Sumner, Nicolas Tanguy, Patrizia Torresi and Pieter Visser. |
Langues : |
Anglais (eng) |
Descripteur : |
[Vedettes matières IGN] Géodésie physique [Termes IGN] accéléromètre [Termes IGN] MICROSCOPE (mission) [Termes IGN] mission spatiale [Termes IGN] principe d'équivalence
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Résumé : |
(auteur) 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 (aA and aB) of two test masses in terms of the Eötvös parameter $\eta (\text{A,B})=2\frac{{a}_{\mathrm{A}}-{a}_{\mathrm{B}}}{{a}_{\mathrm{A}}+{a}_{\mathrm{B}}}$. 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 10−14 for η(Ti, Pt). Accumulating data from all segments leads to η(Ti, Pt) = [−1.5 ± 2.3 (stat) ± 1.5 (syst)] × 10−15 showing no EP violation at the level of 2.7 × 10−15 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 × 10−15. |
Numéro de notice : |
A2022-690 |
Affiliation des auteurs : |
UMR IPGP-Géod+Ext (2020- ) |
Thématique : |
POSITIONNEMENT |
Nature : |
Article |
nature-HAL : |
ArtAvecCL-RevueIntern |
DOI : |
10.1088/1361-6382/ac84be |
En ligne : |
https://doi.org/10.1088/1361-6382/ac84be |
Format de la ressource électronique : |
URL article |
Permalink : |
https://documentation.ensg.eu/index.php?lvl=notice_display&id=101804 |
in Classical and Quantum Gravity > vol 39 n° 20 (October 2022) . - n° 2004009
[article]
| ![Result of the MICROSCOPE weak equivalence principle test vignette](https://documentation.ensg.eu/img_cache/pmb_ign_record_101804.webp) |