Detection of gravitational waves from black holes: Is there a window for alternative theories?

By R. Konoplya, A. Zhidenko. 2016

193 citations recorded by the source corpus.

Abstract Recently the LIGO and VIRGO Collaborations reported the observation of gravitational-wave signal corresponding to the inspiral and merger of two black holes, resulting into formation of the final black hole. It was shown that the observations are consistent with the Einstein theory of gravity with high accuracy, limited mainly by the statistical error. Angular momentum and mass of the final black hole were determined with rather large allowance of tens of percents. Here we shall show that this indeterminacy in the range of the black-hole parameters allows for some non-negligible deformations of the Kerr spacetime leading to the same frequencies of the black-hole ringing. This means that at the current precision of the experiment there remains some possibility for alternative theories of gravity.

Subfields: Astronomy and Astrophysics, Ocean Engineering

View Paper: https://www.semanticscholar.org/paper/dd18f930d60bc181fbd4001bb23ba390133113ee

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Citations in the corpus

Wormholes versus black holes: quasinormal ringing at early and late times (2016, background): “When two black holes (Kerr and its competitor) are compared in this way, the situation is opposite: one can find such parameters of black holes that not only ` = m = 2 mode, but many modes of the spectra will be very close for both black holes [32].”
Shadow casted by a Konoplya-Zhidenko rotating non-Kerr black hole (2017, methodology): “Making use of this rotating non-Kerr metric, they found that there exist some non-negligible deviation from the Kerr spacetime which lead to the same frequencies of the black-hole ringing [34].”
Phenomenological aspects of black holes beyond general relativity (2018, background): “[178] Roman Konoplya and Alexander Zhidenko, “Detection of gravitational waves from black holes: Is there a window for alternative theories?” Phys.”
Overdamped modes in Schwarzschild-de Sitter and a Mathematica package for the numerical computation of quasinormal modes (2017, background): “by quasinormal modes. With more data of black hole mergers expected in the future, matching the signal to the quasinormal modes will be a good test of General Relativity[5]. In particular as noted in [6] a more { 1 { accurate determination of the mass and angular momentum of the black hole is necess”