First Search for Nontensorial Gravitational Waves from Known Pulsars.
First Search for Nontensorial Gravitational Waves from Known Pulsars.
复制标题
首次从已知脉冲星中搜索非张量引力波。
DOI：
10.1103/physrevlett.120.031104
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发表时间：
2018
影响因子：
8.6
通讯作者：
Abbott BP
中科院分区：
文献类型：
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作者：
Abbott BP
我们给出了非张量引力波的第一次定向搜索的结果。虽然广义相对论只允许张量(正模和交模)模式，但一般度规理论原则上可以预测最多有六种不同极化的波。这种分析对标量、矢量或张量极化的连续信号很敏感，不依赖于任何特定的引力理论。在搜索了先进LIGO探测器第一次观测运行的数据，寻找旋转频率是200颗已知脉冲星的两倍的信号后，我们没有发现任何偏振的引力波的证据。我们报告了第一个标量应变和矢量应变的上限，发现数值在大小上与以前公布的张量应变上限相当。我们的结果可能会转化为对特定的替代引力理论的限制。
We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric theory may, in principle, predict waves with up to six different polarizations. This analysis is sensitive to continuous signals of scalar, vector, or tensor polarizations, and does not rely on any specific theory of gravity. After searching data from the first observation run of the advanced LIGO detectors for signals at twice the rotational frequency of 200 known pulsars, we find no evidence of gravitational waves of any polarization. We report the first upper limits for scalar and vector strains, finding values comparable in magnitude to previously published limits for tensor strain. Our results may be translated into constraints on specific alternative theories of gravity.
DOI：
--
发表时间：
2017
期刊：
影响因子：
--
作者：
T. Callister;A. Biscoveanu;N. Christensen;M. Isi;A. Matas;O. Minazzoli;T. Regimbau;M. Sakellariadou;J. Tasson;E. Thrane
通讯作者：
E. Thrane