Result of the MICROSCOPE weak equivalence principle test

被引：21

作者：

Touboul, Pierre ^{[1
]}

Metris, Gilles ^{[2
]}

Rodrigues, Manuel ^{[3
]}

Berge, Joel ^{[3
]}

Robert, Alain ^{[4
]}

Baghi, Quentin ^{[2
,3
,17
]}

Andre, Yves ^{[4
]}

Bedouet, Judicael ^{[5
]}

Boulanger, Damien ^{[3
]}

Bremer, Stefanie ^{[6
,18
]}

Carle, Patrice ^{[1
]}

Chhun, Ratana ^{[3
]}

Christophe, Bruno ^{[3
]}

Cipolla, Valerio ^{[4
]}

Damour, Thibault ^{[7
]}

Danto, Pascale ^{[4
]}

Demange, Louis ^{[2
]}

Dittus, Hansjoerg ^{[8
]}

Dhuicque, Oceane ^{[3
]}

Fayet, Pierre ^{[9
,10
]}

Foulon, Bernard ^{[3
]}

Guidotti, Pierre-Yves ^{[4
,19
]}

Hagedorn, Daniel ^{[11
]}

Hardy, Emilie ^{[3
]}

Huynh, Phuong-Anh ^{[3
]}

Kayser, Patrick ^{[3
]}

Lala, Stephanie ^{[1
]}

Laemmerzahl, Claus ^{[6
]}

Lebat, Vincent ^{[3
]}

Liorzou, Francoise ^{[3
]}

List, Meike ^{[6
,18
]}

Loeffler, Frank ^{[11
]}

Panet, Isabelle ^{[12
]}

Pernot-Borras, Martin ^{[3
]}

Perraud, Laurent ^{[4
]}

Pires, Sandrine ^{[13
]}

Pouilloux, Benjamin ^{[4
,20
]}

Prieur, Pascal ^{[4
]}

Rebray, Alexandre ^{[3
]}

Reynaud, Serge ^{[14
]}

Rievers, Benny ^{[6
]}

Selig, Hanns ^{[6
,21
]}

Serron, Laura ^{[2
]}

Sumner, Timothy ^{[15
]}

Tanguy, Nicolas ^{[3
]}

Torresi, Patrizia ^{[4
]}

Visser, Pieter ^{[16
]}

机构：

[1] Univ Paris Saclay, ONERA, F-91123 Palaiseau, France

[2] Univ Cote dAzur, Observ Cote dAzur, CNRS, Geoazur,IRD, 250 Ave Albert Einstein, F-06560 Valbonne, France

[3] Univ Paris Saclay, ONERA, F-92322 Chatillon, France

[4] CNES Toulouse, 18 Ave Edouard Belin, F-31401 Toulouse 9, France

[5] Univ Toulouse, ONERA, F-31055 Toulouse, France

[6] Univ Bremen, Ctr Appl Space Technol & Micrograv, ZARM, D-28359 Bremen, Germany

[7] Inst Hautes Etud Sci, IHES, 35 Route Chartres, F-91440 Bures Sur Yvette, France

[8] DLR, Koln Headquarters, D-51147 Cologne, Germany

[9] Sorbonne Univ, Univ PSL CNRS, Univ Paris Cite, ENS,CNRS,Lab Phys Ecole Normale Super, F-75005 Paris, France

[10] Ecole Polytech, IPP, CPhT, Palaiseau, France

[11] Physikal Tech Bundesanstalt, PTB, Bundesallee 100, D-38116 Braunschweig, Germany

[12] IPGP, 35 Rue Helene Brion, F-75013 Paris, France

[13] Univ Paris Saclay, Univ Paris Cite, CNRS, CEA,AIM Paris Saclay, F-91190 Gif Sur Yvette, France

[14] Sorbonne Univ, Coll France, Lab Kastler Brossel, ENS PSL Univ, F-75252 Paris, France

[15] Imperial Coll London, Blackett Lab, Prince Consort Rd, London SW7 2AZ, England

[16] Delft Univ Technol, Fac Aerosp Engn, Kluyverweg 1, NL-2629 HS Delft, Netherlands

[17] CEA, Ctr Saclay, IRFU, DPhP, F-91191 Gif Sur Yvette, France

[18] DLR, Inst Satellite Geodesy & Inertial Sensing, Fallturm 9, D-28359 Bremen, Germany

[19] AIRBUS Def & Space, F-31402 Toulouse, France

[20] KINEIS, F-31520 Ramonville St Agne, France

[21] GERADTS GMBH, Kleiner Ort 8, D-28357 Bremen, Germany

来源：

CLASSICAL AND QUANTUM GRAVITY | 2022年 / 39卷 / 20期

关键词：

MICROSCOPE; general relativity; experimental gravitation; equivalence principle; space mission; space accelerometers; Eotvos parameter; MAXIMUM-LIKELIHOOD; RELATIVITY;

D O I：

10.1088/1361-6382/ac84be

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 Eotvos parameter eta(A,B)=2aA-aBaA+aB <i . 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 eta(Ti, Pt). Accumulating data from all segments leads to eta(Ti, Pt) = [-1.5 +/- 2.3 (stat) +/- 1.5 (syst)] x 10(-15) showing no EP violation at the level of 2.7 x 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 Eot-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 Eotvos parameter with a statistical uncertainty of 1.1 x 10(-15).

引用

页数：31

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