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Einstein Gravity Explorer-a medium-class fundamental physics mission
Schiller, S.1; Tino, G. M.2,3; Gill, P.4; Salomon, C.5; Sterr, U.6; Peik, E.6; Nevsky, A.1; Goerlitz, A.1; Svehla, D.7; Ferrari, G.2,3; Poli, N.2,3; Lusanna, L.8; Klein, H.4; Margolis, H.4; Lemonde, P.9; Laurent, P.9; Santarelli, G.9; Clairon, A.9; Ertmer, W.10; Rasel, E.10; Mueller, J.11; Iorio, L.12; Laemmerzahl, C.13; Dittus, H.13; Gill, E.14; Rothacher, M.15; Flechner, F.15; Schreiber, U.16; Flambaum, V.17; Ni, Wei-Tou18; Liu, Liang19; Chen, Xuzong20; Chen, Jingbiao20; Gao, Kelin21; Cacciapuoti, L.22; Holzwarth, R.23,24; Hess, M. P.25; Schaefer, W.26
AbstractThe Einstein Gravity Explorer mission (EGE) is devoted to a precise measurement of the properties of space-time using atomic clocks. It tests one of the most fundamental predictions of Einstein's Theory of General Relativity, the gravitational redshift, and thereby searches for hints of quantum effects in gravity, exploring one of the most important and challenging frontiers in fundamental physics. The primary mission goal is the measurement of the gravitational redshift with an accuracy up to a factor 10(4) higher than the best current result. The mission is based on a satellite carrying cold atom-based clocks. The payload includes a cesium microwave clock (PHARAO), an optical clock, a femtosecond frequency comb, as well as precise microwave time transfer systems between space and ground. The tick rates of the clocks are continuously compared with each other, and nearly continuously with clocks on earth, during the course of the 3-year mission. The highly elliptic orbit of the satellite is optimized for the scientific goals, providing a large variation in the gravitational potential between perigee and apogee. Besides the fundamental physics results, as secondary goals EGE will establish a global reference frame for the Earth's gravitational potential and will allow a new approach to mapping Earth's gravity field with very high spatial resolution. The mission was proposed as a class-M mission to ESA's Cosmic Vision Program 2015-2025.
KeywordGravitational Redshift Gravitational Frequency Shift Atomic Clock Optical Clock Equivalence Principle Local Position Invariance Special Relativity Lorentz Invariance General Relativity Geoid Frequency Transfer Microwave Link Gravitational Potential
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000263505600004
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Document Type期刊论文
Affiliation1.Univ Dusseldorf, Inst Expt Phys, D-40225 Dusseldorf, Germany
2.Univ Florence, CNR, Ist Nazl Fis Nucl, Sez Firenze,LENS Lab, I-50019 Sesto Fiorentino, Italy
3.Univ Florence, Dipartimento Fis, I-50019 Sesto Fiorentino, Italy
4.Natl Phys Lab, Teddington TW11 0LW, Middx, England
5.Ecole Normale Super, Lab Kastler Brossel, F-75231 Paris, France
6.Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany
7.Tech Univ Munich, Inst Astron & Phys Geodesy, D-80333 Munich, Germany
8.Polo Sci, Sez Firenze, INFN, I-50019 Sesto Fiorentino, Italy
9.Observ Paris, LNE SYRTE, F-75014 Paris, France
10.Leibniz Univ Hannover, Inst Quantenopt, D-30167 Hannover, Germany
11.Leibniz Univ Hannover, Inst Erdmessung, D-30167 Hannover, Germany
12.Ist Nazl Fis Nucl, Sez Pisa, I-70125 Bari, Italy
13.Univ Bremen, Ctr Appl Space Technol & Micrograv ZARM, D-28359 Bremen, Germany
14.Delft Univ Technol, Dept Earth Observat & Space Syst, NL-2629 HS Delft, Netherlands
15.Geoforschungszentrum Potsdam, D-14473 Potsdam, Germany
16.Fundamentalstn Wettzell, D-93444 Bad Koetzting, Germany
17.Univ New S Wales, Sydney, NSW, Australia
18.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
19.Chinese Acad Sci Jiading, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
20.Peking Univ, Sch Elect Engn & Comp Sci, Inst Quantum Elect, Beijing 100871, Peoples R China
21.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China
22.Estec, ESA, Res & Sci Support Dept, NL-2200 AG Noordwijk, Netherlands
23.Max Planck Inst Quantum Opt, D-85748 Garching, Germany
24.Menlo Syst GmbH, D-82152 Martinsried, Germany
25.ASTRIUM Space Transportat, D-88093 Friedrichshafen, Germany
26.TimeTech GmbH, D-70563 Stuttgart, Germany
Recommended Citation
GB/T 7714
Schiller, S.,Tino, G. M.,Gill, P.,et al. Einstein Gravity Explorer-a medium-class fundamental physics mission[J]. EXPERIMENTAL ASTRONOMY,2009,23(2):573-610.
APA Schiller, S..,Tino, G. M..,Gill, P..,Salomon, C..,Sterr, U..,...&Schaefer, W..(2009).Einstein Gravity Explorer-a medium-class fundamental physics mission.EXPERIMENTAL ASTRONOMY,23(2),573-610.
MLA Schiller, S.,et al."Einstein Gravity Explorer-a medium-class fundamental physics mission".EXPERIMENTAL ASTRONOMY 23.2(2009):573-610.
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