Forecasts for low spin black hole spectroscopy in Horndeski gravity

Forecasts for low spin black hole spectroscopy in Horndeski gravity
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Horndeski 引力中低自旋黑洞光谱的预测

DOI:
10.1103/physrevd.99.104082
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发表时间:
2019
期刊:
影响因子:
5
通讯作者:
Tattersall O
Tattersall O
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Tattersall O

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通过对扰动黑洞引力波的观测,探讨了利用黑洞光谱学来约束Horndeski引力参数的前景。本文研究了Horndeski引力场中无毛黑洞在衰荡过程中所发射的引力波,证明了广义相对论和Horndeski引力理论中这种发射的性质差异。特别是,与标量场谱相关的准正规模频率可以出现在发射的引力辐射中。使用Fisher矩阵方法计算黑洞和Horndeski参数的误差估计的解析表达式,在某些情况下,对Horndeski标量场的“有效质量”的约束被证明是可以实现的。估计所需的最低信号噪声比观察这样的信号。
We investigate the prospect of using black hole spectroscopy to constrain the parameters of Horndeski gravity through observations of gravitational waves from perturbed black holes. We study the gravitational waves emitted during ringdown from black holes without hair in Horndeski gravity, demonstrating the qualitative differences between such emission in general relativity and Horndeski theory. In particular, quasinormal mode frequencies associated with the scalar field spectrum can appear in the emitted gravitational radiation. Analytic expressions for error estimates for both the black hole and Horndeski parameters are calculated using a Fisher matrix approach, with constraints on the “effective mass” of the Horndeski scalar field of orderor tighter being shown to be achievable in some scenarios. Estimates for the minimum signal-to-noise ratio required to observe such a signal are also presented.
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