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          Institute: MPI für Gravitationsphysik     Collection: Laser Interferometry & Gravitational Wave Astronomy     Display Documents

ID: 410464.0, MPI für Gravitationsphysik / Laser Interferometry & Gravitational Wave Astronomy
Astrodynamical Space Test of Relativity Using Optical Devices I (ASTROD I)-A class-M fundamental physics mission proposal for Cosmic Vision 2015-2025
Authors:Appourchaux, Thierry; Burston, Raymond; Chen, Yanbei; Cruise, Michael; Dittus, Hansjoerg; Foulon, Bernard; Gill, Patrick; Gizon, Laurent; Klein, Hugh; Klioner, Sergei; Kopeikin, Sergei; Krüger, Hans; Lämmerzahl, Claus; Lobo, Alberto; Luo, Xinlian; Margolis, Helen; Ni, Wei-Tou; Paton, Antonio Pulido; Peng, Qiuhe; Peters, Achim; Rasel, Ernst; Rüdiger, Albrecht; Samain, Etienne; Selig, Hanns; Shaul, Diana; Sumner, Timothy; Theil, Stephan; Touboul, Pierre; Turyshev, Slava; Wang, Haitao; Wang, Li; Wen, Linqing; Wicht, Andreas; Wu, Ji; Zhang, Xiaomin; Zhao, Cheng
Date of Publication (YYYY-MM-DD):2009-01-29
Title of Journal:Experimental Astronomy
Issue / Number:2
Start Page:491
End Page:527
Review Status:not specified
Audience:Not Specified
Abstract / Description: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.
External Publication Status:published
Document Type:Article
Communicated by:Karsten Danzmann
Affiliations:MPI für Gravitationsphysik/Laser Interferometry & Gravitational Wave Astronomy
MPI für Gravitationsphysik/Teilinstitut Hannover
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