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题名: Second post-Newtonian approximation of scalar-tensor theory of gravity
作者: Xie, Yi1; Ni, Wei-Tou2, 3; Dong, Peng2; Huang, Tian-Yi1
刊名: ADVANCES IN SPACE RESEARCH
出版日期: 2009
卷号: 43, 期号:1, 页码:171-180
关键词: Scalar-tensor theory ; Second post-Newtonian approximation ; Precision astrodynamics ; ASTROD ; Intermediate-range gravity
DOI: 10.1016/j.asr.2007.09.022
文章类型: Article
英文摘要: Deep space laser ranging missions like ASTROD I (Single-Spacecraft Astrodynamical Space Test of Relativity using Optical Devices) and ASTROD, together with astrometry missions like GAIA and LATOR will be able to test relativistic gravity to an unprecedented level of accuracy. More precisely, these missions will enable us to test relativistic gravity to 10(-7)-10(-9) of the size of relativistic (post-Newtonian) effects, and will require second post-Newtonian approximation of relevant theories of gravity. The first post-Newtonian approximation is valid to 10(-6) and the second post-Newtonian approximation is valid to 10(-12) in terms of post-Newtonian effects in the solar system. The scalar-tensor theory is widely discussed and used in tests of relativistic gravity, especially after the interests in inflation models and in dark energy models. In the Lagrangian, intermediate-range gravity term has a similar form as cosmological term. Here we present the full second post-Newtonian approximation of the scalar-tensor theory including viable examples of intermediate-range gravity. We use Chandrasekhar's approach to derive the metric coefficients and the equation of the hydrodynamics governing a perfect fluid in the second post-Newtonian approximation in scalar-tensor theory; all terms inclusive of O(c(-4)) are retained consistently in the equations of motion. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
研究领域[WOS]: Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
关键词[WOS]: RELATIVISTIC CELESTIAL MECHANICS ; BRANS-DICKE THEORY ; GENERAL-RELATIVITY ; CONSERVATION LAWS ; EQUATIONS ; HYDRODYNAMICS ; MOTION ; FRAMES ; ASTROD
收录类别: SCI
语种: 英语
WOS记录号: WOS:000262541500022
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15915
Appears in Collections:近地天体探测和太阳系天体研究团组_期刊论文

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作者单位: 1.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Ctr Gravitat & Cosmol, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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