Tests of General Relativity with GW170817
Tests of General Relativity with GW170817
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DOI：
10.1103/physrevlett.121.129902
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发表时间：
2019-07-01
影响因子：
8.6
通讯作者：
Zweizig, J.
中科院分区：
文献类型：
--
作者：
Abbott, B. P.;Abbott, R.;Zweizig, J.
Advanced LIGO 和 Advanced Virgo 最近发现了来自双中子星螺旋的引力波信号，使得利用这种新型源进行广义相对论 (GR) 测试成为可能。该源首次允许在物质存在的情况下测试致密双星的强场动力学。在这封信中，我们对偶极子辐射以及控制吸气状态的后牛顿系数中可能存在的 GR 偏差进行了限制。获得了引力波修正色散的界限；结合来自观测到的电磁对应物的信息，我们还可以限制由于大的额外维度而产生的影响。最后，研究了引力波信号的偏振内容。这里进行的所有测试的结果都与 GR 非常吻合。
The recent discovery by Advanced LIGO and Advanced Virgo of a gravitational wave signal from a binary neutron star inspiral has enabled tests of general relativity (GR) with this new type of source. This source, for the first time, permits tests of strong-field dynamics of compact binaries in the presence of matter. In this Letter, we place constraints on the dipole radiation and possible deviations from GR in the post-Newtonian coefficients that govern the inspiral regime. Bounds on modified dispersion of gravitational waves are obtained; in combination with information from the observed electromagnetic counterpart we can also constrain effects due to large extra dimensions. Finally, the polarization content of the gravitational wave signal is studied. The results of all tests performed here show good agreement with GR.