Light Deflection under the Gravitational Field of Jupiter—Testing General Relativity

doi:10.3847/1538-4357/ac3821

	Light Deflection under the Gravitational Field of Jupiter—Testing General Relativity
	Li,Yingjie 1; Xu,Ye 1,2; Li,JingJing 1; Wu,Yuanwei 3; Bian,Shaibo 1,2; Lin,ZeHao 1,2; Yang,WenJin 4; Hao,Chaojie 1,2; Liu,DeJian 1,2
	2022
发表期刊	The Astrophysical Journal
ISSN	0004-637X
卷号	925 期号:1
摘要	Abstract We measured the relative positions between two pairs of compact extragalactic sources (CESs), J1925-2219 and J1923-2104 (C1–C2) and J1925-2219 and J1928-2035 (C1–C3), on 2020 October 23–25 and 2021 February 5 (totaling four epochs), respectively, using the Very Long Baseline Array at 15 GHz. Accounting for the deflection angle dominated by Jupiter, as well as the contributions from the Sun and planets other than Earth, the Moon, and Ganymede (the most massive of the solar system’s moons), our theoretical calculations predict that the dynamical ranges of the relative positions across four epochs in R.A. of the C1–C2 pair and C1–C3 pair are 841.2 and 1127.9 μas, respectively. The formal accuracy in R.A. is about 20 μas, but the error in decl. is poor. The measured standard deviations of the relative positions across the four epochs are 51.0 and 29.7 μas in R.A. for C1–C2 and C1–C3, respectively. These values indicate that the accuracy of the post-Newtonian relativistic parameter, γ, is ～0.061 for C1–C2 and ～0.026 for C1–C3. Combining the two CES pairs, the measured value of γ is 0.984 ± 0.037, which is comparable to the latest published results for Jupiter as a gravitational lens, reported by Fomalont & Kopeikin, i.e., 1.01 ± 0.03.
DOI	10.3847/1538-4357/ac3821
语种	英语
WOS记录号	IOP:apj_925_1_47
出版者	The American Astronomical Society
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/14004
专题	高精度时间传递与精密测定轨研究室
通讯作者	Li,Yingjie
作者单位	1.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, People’s Republic of China; liyj@pmo.ac.cn, xuye@pmo.ac.cn 2.University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China 3.National Time Service Center, Key Laboratory of Precise Positioning and Timing Technology, Chinese Academy of Sciences, Xi’an 710600, People’s Republic of China 4.Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121, Bonn, Germany
推荐引用方式 GB/T 7714	Li,Yingjie,Xu,Ye,Li,JingJing,等. Light Deflection under the Gravitational Field of Jupiter—Testing General Relativity[J]. The Astrophysical Journal,2022,925(1).
APA	Li,Yingjie.,Xu,Ye.,Li,JingJing.,Wu,Yuanwei.,Bian,Shaibo.,...&Liu,DeJian.(2022).Light Deflection under the Gravitational Field of Jupiter—Testing General Relativity.The Astrophysical Journal,925(1).
MLA	Li,Yingjie,et al."Light Deflection under the Gravitational Field of Jupiter—Testing General Relativity".The Astrophysical Journal 925.1(2022).