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Astrodynamical Space Test of Relativity Using Optical Devices I (ASTROD I)—A class-M fundamental physics mission proposal for Cosmic Vision 2015–2025

Appourchaux, Thierry and Burston, Raymond and Chen, Yanbei and Cruise, Michael and Dittus, Hansjörg and Foulon, Bernard and Gill, Patrick and Gizon, Laurent and Klein, Hugh and Klioner, Sergei and Kopeikin, Sergei and Krüger, Hans and Lämmerzahl, Claus and Lobo, Alberto and Luo, Xianlian and Margolis, Helen and Ni, Wei-Tou and Patón, Antonio Palido and Qiuhe, Peng and Peters, Achim and Rasel, Ernst and Rüdiger, Albrecht and Samain, Étienne and Selig, Hans and Shaul, Diana and Sumner, Timothy and Theil, Stephan and Touboul, Pierre and Turyshev, Slava and Wang, Haitao and Wang, Li and Wen, Linqing and Wicht, Andreas and Wu, Ji and Zhang, Xiaomin and Zhao, Cheng (2009) Astrodynamical Space Test of Relativity Using Optical Devices I (ASTROD I)—A class-M fundamental physics mission proposal for Cosmic Vision 2015–2025. Experimental Astronomy, 23 (2). pp. 491-527. ISSN 0922-6435.

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ASTROD I is a planned interplanetary space mission with multiple goals. The primary aims are: to test general relativity with an improvement in sensitivity of over three orders of magnitude, improving our understanding of gravity and aiding the development of a new quantum gravity theory; to measure key solar system parameters with increased accuracy, advancing solar physics and our knowledge of the solar system; and to measure the time rate of change of the gravitational constant with an order of magnitude improvement and the anomalous Pioneer acceleration, thereby probing dark matter and dark energy gravitationally. It is an international project, with major contributions from Europe and China and is envisaged as the first in a series of ASTROD missions. ASTROD I will consist of one spacecraft carrying a telescope, four lasers, two event timers and a clock. Two-way, two-wavelength laser pulse ranging will be used between the spacecraft in a solar orbit and deep space laser stations on Earth, to achieve the ASTROD I goals. A second mission, ASTROD (ASTROD II) is envisaged as a three-spacecraft mission which would test General Relativity to 1 ppb, enable detection of solar g-modes, measure the solar Lense–Thirring effect to 10 ppm, and probe gravitational waves at frequencies below the LISA bandwidth. In the third phase (ASTROD III or Super-ASTROD), larger orbits could be implemented to map the outer solar system and to probe primordial gravitational-waves at frequencies below the ASTROD II bandwidth.

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Chen, Yanbei0000-0002-9730-9463
Additional Information:© 2009 Springer. Received: 12 February 2008; accepted: 1 December 2008; published online: 29 January 2009. We are grateful to the referees for helpful suggestions to make our presentation clearer.
Subject Keywords:Probing the fundamental laws of spacetime; Exploring the microscopic origin of gravity; Testing relativistic gravity; Mapping solar-system gravity; Solar g-mode detection; Gravitational-wave detection; ASTROD - ASTROD I;' PACS 04.80 Cc - 04.80 Nn - 95.10.-a - 96.60 Ly
Issue or Number:2
Record Number:CaltechAUTHORS:20090702-142619488
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14490
Deposited By: Jason Perez
Deposited On:01 Sep 2009 17:47
Last Modified:28 Oct 2019 17:23

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