Quasinormal modes of black holes encircled by a gravitating thin disk
arXiv:2307.07360 · doi:10.1103/PhysRevD.108.064052
Abstract
The ringdown phase of gravitational waves emitted by a perturbed black hole is described by a superposition of exponentially decaying sinusoidal modes, called quasinormal modes (QNMs), whose frequencies depend only on the property of the black hole geometry. The extraction of QNM frequencies of an isolated black hole would allow for testing how well the black hole is described by general relativity. However, astrophysical black holes are not isolated. It remains unclear whether the extra matter surrounding the black holes such as accretion disks would affect the validity of the black hole spectroscopy when the gravitational effects of the disks are taken into account. In this paper, we study the QNMs of a Schwarzschild black hole superposed with a gravitating thin disk. Considering up to the first order of the mass ratio between the disk and the black hole, we find that the existence of the disk would decrease the oscillating frequency and the decay rate. In addition, within the parameter space where the disk model can be regarded as physical, there seems to be a universal relation that the QNM frequencies tend to obey. The relation, if it holds generically, would assist in disentangling the QNM shifts caused by the disk contributions from those induced by other putative effects beyond general relativity. The QNMs in the eikonal limit, as well as their correspondence with bound photon orbits in this model, are briefly discussed.
14 pages, 10 figures. Matching published version
References in corpus (20)
- Can environmental effects spoil precision gravitational-wave astrophysics?
- Higher order WKB formula for quasinormal modes and grey-body factors: recipes for quick and accurate calculations
- Black holes in galaxies: environmental impact on gravitational-wave generation and propagation
- Quasinormal-mode spectrum of Kerr black holes and its geometric interpretation
- Destabilizing the Fundamental Mode of Black Holes: The Elephant and the Flea
- Environmental Effects for Gravitational-wave Astrophysics
- Stability of the fundamental quasinormal mode in time-domain observations against small perturbations
- Black holes in galactic centers: quasinormal ringing, grey-body factors and Unruh temperature
- Quasinormal Modes of Black Holes with Multiple Photon Spheres
- Correspondence of eikonal quasinormal modes and unstable fundamental photon orbits for Kerr-Newman black hole
- On the accretion-induced QNM excitation of a Schwarzschild black hole
- Quasinormal modes of Schwarzschild black holes on the real axis
- Breaking of isospectrality of quasinormal modes in nonrotating loop quantum gravity black holes
- Quasi-normal modes of non-separable perturbation equations: the scalar non-Kerr case
- Eikonal quasinormal modes and photon orbits of deformed Schwarzschild black holes
- Observational optical constraints of regular black holes
- A novel test of gravity via black hole eikonal correspondence
- Geodesic structure and quasinormal modes of a tidally perturbed spacetime
- Black hole encircled by a thin disk: fully relativistic solution
- Disk sources of the Kerr and Tomimatsu-Sato spacetimes: construction and physical properties
Cited by in corpus (7)
- Spectral (in)stability of quasinormal modes and strong cosmic censorship
- Asymptotic decay and quasinormal frequencies of scalar and Dirac fields around dilaton-de Sitter black holes
- Black hole in the Dekel-Zhao dark matter profile
- Quasinormal modes of charged black holes in Asymptotically Safe Gravity
- Charged black hole surrounded by a galactic halo in de Sitter universe
- Matter environments around black holes: geodesics, light rings, and ultracompact configurations
- Quasinormal spectra of a wormhole family: overtone features and a parameter-controlled redshift