Scalar perturbations of non-singular non-rotating black holes in conformal gravity
Scalar perturbations of non-singular non-rotating black holes in conformal gravity
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DOI：
10.1103/physrevd.96.064028
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发表时间：
2017-05
期刊：
影响因子：
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通讯作者：
B. Toshmatov;C. Bambi;B. Ahmedov;Z. Stuchl'ik;J. Schee
中科院分区：
文献类型：
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作者：
B. Toshmatov;C. Bambi;B. Ahmedov;Z. Stuchl'ik;J. Schee
我们研究一族非奇异非旋转黑洞时空的标量和电磁扰动，它们是一大类共形不变引力理论的解。标量扰动的有效势取决于标度因子的精确形式。电磁扰动不受标度因子的影响，相应的准正规模谱与史瓦西度规相同。我们发现这些黑洞度规在标量和电磁扰动下是稳定的。假设标量扰动的拟正规模谱与引力扰动的拟正规模谱差别不大，我们可以预期，拟正规模谱的计算和天体物理黑洞拟正规模的引力波探测器观测可以约束标度因子并检验这些解。
We study scalar and electromagnetic perturbations of a family of nonsingular nonrotating black hole spacetimes that are solutions in a large class of conformally invariant theories of gravity. The effective potential for scalar perturbations depends on the exact form of the scaling factor. Electromagnetic perturbations do not feel the scaling factor, and the corresponding quasinormal mode spectrum is the same as in the Schwarzschild metric. We find that these black hole metrics are stable under scalar and electromagnetic perturbations. Assuming that the quasinormal mode spectrum for scalar perturbations is not too different from that for gravitational perturbations, we can expect that the calculation of the quasinormal mode spectrum and the observation with gravitational wave detectors of quasinormal modes from astrophysical black holes can constrain the scaling factor and test these solutions.