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题名: The second post-Newtonian light propagation and its astrometric measurement in the solar system
作者: Deng XueMei(邓雪梅)
刊名: INTERNATIONAL JOURNAL OF MODERN PHYSICS D
出版日期: 2015-06-01
卷号: 24, 期号:7, 页码:1550056
关键词: Astrometry ; reference systems ; relativity
学科分类: 天文和天体物理
DOI: 10.1142/S021827181550056X
文章类型: Article
英文摘要: The relativistic theories of light propagation are generalized by introducing two new parameters zeta and eta in the second post-Newtonian (2PN) order, in addition to the parametrized post-Newtonian (PPN) parameters gamma and beta. This new 2PN parametrized (2PPN) formalism includes the nonstationary gravitational fields and the influences of all kinds of relativistic effects. The multipolar components of gravitating bodies are taken into account as well at the first post-Newtonian (1PN) order. The equations of motion and their solutions of this 2PPN light propagation problem are obtained. Started from the definition of a measurable quantity, a gauge-invariant angle between the directions of two incoming photons for a differential measurement in astrometric observation is discussed and its formula is derived. For a precision level of a few microarcsecond (mu as) for space astrometry missions in the near future, we further consider a model of angular measurement, the Laser Astrometric Test of Relativity (LATOR)-like missions. In this case, all terms with aimed at the accuracy of similar to 1 mu as are estimated.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: GENERAL-RELATIVISTIC MODEL ; PREFERRED-FRAME THEORIES ; GRAVITATIONAL-FIELD ; MICROARCSECOND ASTROMETRY ; CONSERVATION LAWS ; FORMALISM ; GRAVITY ; MISSION ; SPACE ; TIME
收录类别: SCI
所属项目名称: PMO_LIB-IR
语种: 英语
WOS记录号: WOS:000355327200013
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/14869
Appears in Collections:历算和天文参考系研究团组_期刊论文

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作者单位: 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
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