MICROSCOPE Mission: Final Results of the Test of the Equivalence Principle

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Pierre Touboul
  • Gilles Métris
  • Manuel Rodrigues
  • Joel Bergé
  • Alain Robert
  • Quentin Baghi
  • Yves André
  • Judicaël 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
  • Stéphanie Lala
  • Claus Lämmerzahl
  • 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
  • Pieter Visser

Externe Organisationen

  • Universität Paris-Saclay
  • Observatoire de la Côte d’Azur (OCA)
  • Centre national d’études spatiales (CNES)
  • Université de Toulouse
  • Institut des Hautes Etudes Scientifiques
  • Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
  • Université Paris Sciences et Lettres
  • Centre national de la recherche scientifique (CNRS)
  • Physikalisch-Technische Bundesanstalt (PTB)
  • Institut de Physique du Globe de Paris (IPGP)
  • Université Paris 6
  • Imperial College London
  • Delft University of Technology
  • Zentrum für angewandte Raumfahrt­technologie und Mikro­gravitation (ZARM)
  • Universität Bremen
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer121102
FachzeitschriftPhysical review letters
Jahrgang129
Ausgabenummer12
PublikationsstatusVeröffentlicht - 16 Sept. 2022
Extern publiziertJa

Abstract

The MICROSCOPE mission was designed to test the weak equivalence principle (WEP), stating the equality between the inertial and the gravitational masses, with a precision of 10-15 in terms of the Eötvös ratio η. Its experimental test consisted of comparing the accelerations undergone by two collocated test masses of different compositions as they orbited the Earth, by measuring the electrostatic forces required to keep them in equilibrium. This was done with ultrasensitive differential electrostatic accelerometers onboard a drag-free satellite. The mission lasted two and a half years, cumulating five months worth of science free-fall data, two-thirds with a pair of test masses of different compositions - titanium and platinum alloys - and the last third with a reference pair of test masses of the same composition - platinum. We summarize the data analysis, with an emphasis on the characterization of the systematic uncertainties due to thermal instabilities and on the correction of short-lived events which could mimic a WEP violation signal. We found no violation of the WEP, with the Eötvös parameter of the titanium and platinum pair constrained to η(Ti,Pt)=[-1.5±2.3(stat)±1.5(syst)]×10-15 at 1σ in statistical errors.

ASJC Scopus Sachgebiete

Zitieren

MICROSCOPE Mission: Final Results of the Test of the Equivalence Principle. / Touboul, Pierre; Métris, Gilles; Rodrigues, Manuel et al.
in: Physical review letters, Jahrgang 129, Nr. 12, 121102, 16.09.2022.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Touboul, P, Métris, G, Rodrigues, M, Bergé, J, Robert, A, Baghi, Q, André, Y, Bedouet, J, Boulanger, D, Bremer, S, Carle, P, Chhun, R, Christophe, B, Cipolla, V, Damour, T, Danto, P, Demange, L, Dittus, H, Dhuicque, O, Fayet, P, Foulon, B, Guidotti, PY, Hagedorn, D, Hardy, E, Huynh, PA, Kayser, P, Lala, S, Lämmerzahl, C, Lebat, V, Liorzou, F, List, M, Löffler, F, Panet, I, Pernot-Borràs, M, Perraud, L, Pires, S, Pouilloux, B, Prieur, P, Rebray, A, Reynaud, S, Rievers, B, Selig, H, Serron, L, Sumner, T, Tanguy, N, Torresi, P & Visser, P 2022, 'MICROSCOPE Mission: Final Results of the Test of the Equivalence Principle', Physical review letters, Jg. 129, Nr. 12, 121102. https://doi.org/10.1103/PhysRevLett.129.121102
Touboul, P., Métris, G., Rodrigues, M., Bergé, J., Robert, A., Baghi, Q., André, Y., Bedouet, J., Boulanger, D., Bremer, S., Carle, P., Chhun, R., Christophe, B., Cipolla, V., Damour, T., Danto, P., Demange, L., Dittus, H., Dhuicque, O., ... Visser, P. (2022). MICROSCOPE Mission: Final Results of the Test of the Equivalence Principle. Physical review letters, 129(12), Artikel 121102. https://doi.org/10.1103/PhysRevLett.129.121102
Touboul P, Métris G, Rodrigues M, Bergé J, Robert A, Baghi Q et al. MICROSCOPE Mission: Final Results of the Test of the Equivalence Principle. Physical review letters. 2022 Sep 16;129(12):121102. doi: 10.1103/PhysRevLett.129.121102
Touboul, Pierre ; Métris, Gilles ; Rodrigues, Manuel et al. / MICROSCOPE Mission : Final Results of the Test of the Equivalence Principle. in: Physical review letters. 2022 ; Jahrgang 129, Nr. 12.
Download
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title = "MICROSCOPE Mission: Final Results of the Test of the Equivalence Principle",
abstract = "The MICROSCOPE mission was designed to test the weak equivalence principle (WEP), stating the equality between the inertial and the gravitational masses, with a precision of 10-15 in terms of the E{\"o}tv{\"o}s ratio η. Its experimental test consisted of comparing the accelerations undergone by two collocated test masses of different compositions as they orbited the Earth, by measuring the electrostatic forces required to keep them in equilibrium. This was done with ultrasensitive differential electrostatic accelerometers onboard a drag-free satellite. The mission lasted two and a half years, cumulating five months worth of science free-fall data, two-thirds with a pair of test masses of different compositions - titanium and platinum alloys - and the last third with a reference pair of test masses of the same composition - platinum. We summarize the data analysis, with an emphasis on the characterization of the systematic uncertainties due to thermal instabilities and on the correction of short-lived events which could mimic a WEP violation signal. We found no violation of the WEP, with the E{\"o}tv{\"o}s parameter of the titanium and platinum pair constrained to η(Ti,Pt)=[-1.5±2.3(stat)±1.5(syst)]×10-15 at 1σ in statistical errors.",
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T1 - MICROSCOPE Mission

T2 - Final Results of the Test of the Equivalence Principle

AU - Touboul, Pierre

AU - Métris, Gilles

AU - Rodrigues, Manuel

AU - Bergé, Joel

AU - Robert, Alain

AU - Baghi, Quentin

AU - André, Yves

AU - Bedouet, Judicaël

AU - Boulanger, Damien

AU - Bremer, Stefanie

AU - Carle, Patrice

AU - Chhun, Ratana

AU - Christophe, Bruno

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AU - Dhuicque, Océane

AU - Fayet, Pierre

AU - Foulon, Bernard

AU - Guidotti, Pierre Yves

AU - Hagedorn, Daniel

AU - Hardy, Emilie

AU - Huynh, Phuong Anh

AU - Kayser, Patrick

AU - Lala, Stéphanie

AU - Lämmerzahl, Claus

AU - Lebat, Vincent

AU - Liorzou, Françoise

AU - List, Meike

AU - Löffler, Frank

AU - Panet, Isabelle

AU - Pernot-Borràs, Martin

AU - Perraud, Laurent

AU - Pires, Sandrine

AU - Pouilloux, Benjamin

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AU - Rievers, Benny

AU - Selig, Hanns

AU - Serron, Laura

AU - Sumner, Timothy

AU - Tanguy, Nicolas

AU - Torresi, Patrizia

AU - Visser, Pieter

N1 - Publisher Copyright: © 2022 American Physical Society.

PY - 2022/9/16

Y1 - 2022/9/16

N2 - The MICROSCOPE mission was designed to test the weak equivalence principle (WEP), stating the equality between the inertial and the gravitational masses, with a precision of 10-15 in terms of the Eötvös ratio η. Its experimental test consisted of comparing the accelerations undergone by two collocated test masses of different compositions as they orbited the Earth, by measuring the electrostatic forces required to keep them in equilibrium. This was done with ultrasensitive differential electrostatic accelerometers onboard a drag-free satellite. The mission lasted two and a half years, cumulating five months worth of science free-fall data, two-thirds with a pair of test masses of different compositions - titanium and platinum alloys - and the last third with a reference pair of test masses of the same composition - platinum. We summarize the data analysis, with an emphasis on the characterization of the systematic uncertainties due to thermal instabilities and on the correction of short-lived events which could mimic a WEP violation signal. We found no violation of the WEP, with the Eötvös parameter of the titanium and platinum pair constrained to η(Ti,Pt)=[-1.5±2.3(stat)±1.5(syst)]×10-15 at 1σ in statistical errors.

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