Gravity Probe B: Final Results of a Space Experiment to Test General Relativity

Gravity Probe B: Final Results of a Space Experiment to Test General Relativity
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DOI:
10.1103/physrevlett.106.221101
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发表时间:
2011-05-31
影响因子:
8.6
通讯作者:
Wang, S.
Wang, S.
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Everitt, C. W. F.;DeBra, D. B.;Wang, S.

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2004年4月20日发射的重力探测器B是一项空间实验,通过地球轨道上的低温陀螺仪检验爱因斯坦广义相对论的两个基本预测,即大地效应和坐标系拖曳效应。数据收集从2004年8月28日开始,到2005年8月14日结束。对来自所有四个陀螺仪的数据进行分析,得出大地漂移率为-6601.8 +/- 18.3 mas/yr,标架拖曳漂移率为-37.2 +/- 7.2 mas/yr,分别与GR预测值-6606.1 mas/yr和-39.2 mas/yr进行比较(“mas”是毫弧秒; 1 mas = 4.848 X 10(-9)rad)。
Gravity Probe B, launched 20 April 2004, is a space experiment testing two fundamental predictions of Einstein's theory of general relativity (GR), the geodetic and frame-dragging effects, by means of cryogenic gyroscopes in Earth orbit. Data collection started 28 August 2004 and ended 14 August 2005. Analysis of the data from all four gyroscopes results in a geodetic drift rate of -6601.8 +/- 18.3 mas/yr and a frame-dragging drift rate of -37.2 +/- 7.2 mas/yr, to be compared with the GR predictions of -6606.1 mas/yr and -39.2 mas/yr, respectively ("mas" is milliarcsecond; 1 mas = 4.848 X 10(-9) rad).