| Literature DB >> 29286705 |
Pierre Touboul1, Gilles Métris2, Manuel Rodrigues1, Yves André3, Quentin Baghi2, Joël Bergé1, Damien Boulanger1, Stefanie Bremer4, Patrice Carle1, Ratana Chhun1, Bruno Christophe1, Valerio Cipolla3, Thibault Damour5, Pascale Danto3, Hansjoerg Dittus6, Pierre Fayet7, Bernard Foulon1, Claude Gageant1, Pierre-Yves Guidotti3, Daniel Hagedorn8, Emilie Hardy1, Phuong-Anh Huynh1, Henri Inchauspe1, Patrick Kayser1, Stéphanie Lala1, Claus Lämmerzahl4, Vincent Lebat1, Pierre Leseur1, Françoise Liorzou1, Meike List4, Frank Löffler8, Isabelle Panet9, Benjamin Pouilloux3, Pascal Prieur3, Alexandre Rebray1, Serge Reynaud10, Benny Rievers4, Alain Robert3, Hanns Selig4, Laura Serron2, Timothy Sumner11, Nicolas Tanguy1, Pieter Visser12.
Abstract
According to the weak equivalence principle, all bodies should fall at the same rate in a gravitational field. The MICROSCOPE satellite, launched in April 2016, aims to test its validity at the 10^{-15} precision level, by measuring the force required to maintain two test masses (of titanium and platinum alloys) exactly in the same orbit. A nonvanishing result would correspond to a violation of the equivalence principle, or to the discovery of a new long-range force. Analysis of the first data gives δ(Ti,Pt)=[-1±9(stat)±9(syst)]×10^{-15} (1σ statistical uncertainty) for the titanium-platinum Eötvös parameter characterizing the relative difference in their free-fall accelerations.Entities:
Year: 2017 PMID： 29286705 DOI： 10.1103/PhysRevLett.119.231101
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161