Constraining parametric deviations from the Kerr spacetime using black hole ringdowns of GW150914 and GW190521
Abstract: The ringdown phase of a binary black hole merger is modelled by the quasi-normal modes of a perturbed Kerr black hole. According to the black hole no-hair theorem, the emitted ringdown spectra are constrained by the mass and spin of the remnant black hole and thus offer an excellent test of the Kerr-nature of black holes. As a parameterization of beyond-Kerr effects, we employ the Johannsen-Psaltis metric ansatz. We analyze the ringdown of two binary black hole merger events- GW150914 and GW190521 to constrain the deviation from Kerr. We find that both events are consistent with the Kerr metric and due to the larger signal-to-noise ratio and the presence of the additional subdominant mode in the ringdown phase, we find a factor of ~2 improvement in constraints on the deviation parameter in the case of GW190521 as compared to GW150914. Moreover, we find that the deviation parameter is anti-correlated to the spin of the remnant black hole. We also explore the effect of priors for other physical parameters on the Kerr deviation.
- R. P. Kerr, Phys. Rev. Lett. 11, 237 (1963).
- S. A. Teukolsky, Astrophys. J. 185, 635 (1973).
- W. H. Press, Astrophys. J. Lett. 170, L105 (1971).
- V. Ferrari and B. Mashhoon, Phys. Rev. D 30, 295 (1984a).
- V. Ferrari and B. Mashhoon, Phys. Rev. Lett. 52, 1361 (1984b).
- S. R. Dolan, Phys. Rev. D 82, 104003 (2010).
- T. Johannsen and D. Psaltis, Phys. Rev. D 83, 124015 (2011).
- C. Bambi, Phys. Lett. B 705, 5 (2011), arXiv:1110.0687 [gr-qc] .
- C. Bambi, JCAP 09, 014 (2012), arXiv:1205.6348 [gr-qc] .
- Z. Carson and K. Yagi, Phys. Rev. D 101, 084050 (2020a), arXiv:2003.02374 [gr-qc] .
- M. Isi and W. M. Farr, (2022), arXiv:2202.02941 [gr-qc] .
- B. P. Abbott et al. (LIGO Scientific, Virgo), Phys. Rev. X 9, 031040 (2019), arXiv:1811.12907 [astro-ph.HE] .
- R. Abbott et al. (LIGO Scientific, Virgo), Phys. Rev. X 11, 021053 (2021), arXiv:2010.14527 [gr-qc] .
- T. Akutsu et al. (KAGRA), PTEP 2021, 05A101 (2021), arXiv:2005.05574 [physics.ins-det] .
- R. Abbott et al. (LIGO Scientific, Virgo), Phys. Rev. Lett. 125, 101102 (2020a), arXiv:2009.01075 [gr-qc] .
- Z. Carson and K. Yagi, Phys. Rev. D 101, 084050 (2020b).
- Z. Ahmed, University of Stavanger (2023a), https://hdl.handle.net/11250/3086695.
- Z. Ahmed, “Jp parameter estimation,” https://github.com/zkhatri11/JP-Parameter-Estimation.git (2023b).
- G. Carullo et al., Phys. Rev. D 98, 104020 (2018), arXiv:1805.04760 [gr-qc] .
- R. Abbott et al. (LIGO Scientific, Virgo), Astrophys. J. Lett. 900, L13 (2020b), arXiv:2009.01190 [astro-ph.HE] .
- P. C. Peters and J. Mathews, Phys. Rev. 131, 435 (1963).
- B. P. Abbott et al. (LIGO Scientific, Virgo), Annalen Phys. 529, 1600209 (2017), arXiv:1608.01940 [gr-qc] .
- D. Reitze et al., Bull. Am. Astron. Soc. 51, 035 (2019), arXiv:1907.04833 [astro-ph.IM] .
- M. Punturo et al., Class. Quant. Grav. 27, 194002 (2010).
Paper Prompts
Sign up for free to create and run prompts on this paper using GPT-5.
Top Community Prompts
Collections
Sign up for free to add this paper to one or more collections.