Extreme mass-ratio inspirals around a spinning horizonless compact object
arXiv:2106.07195 · doi:10.1103/PhysRevD.104.104026
Abstract
Extreme mass-ratio inspirals (EMRIs) detectable by the Laser Interferometer Space Antenna are unique probes of the nature of supermassive compact objects. We compute the gravitational-wave signal emitted by a stellar-mass compact object in a circular equatorial orbit around a Kerr-like horizonless supermassive object defined by an effective radius and a reflectivity coefficient. The Teukolsky equations are solved consistently with suitable (frequency-dependent) boundary conditions, and the modified energy and angular-momentum fluxes are used to evolve the orbital parameters adiabatically. The gravitational fluxes have resonances corresponding to the low-frequency quasinormal modes of the central object, which can contribute significantly to the gravitational-wave phase. Overall, the absence of a classical event horizon in the central object can affect the gravitational-wave signal dramatically, with deviations even larger than those previously estimated by a model-independent analysis of the tidal heating. We estimate that EMRIs could potentially place the most stringent constraint on the reflectivity of supermassive compact objects at the remarkable level of and would allow to constrain various models which are not ruled out by the ergoregion instability. In particular, an EMRI detection could allow one to rule out (or provide evidence for) signatures of quantum black-hole horizons with Boltzmann reflectivity. Our results provide motivation for performing rigorous parameter estimation to assess the detectability of these effects.
11+3 pages, 9 figures. v2: minor revisions to match the version in PRD
References in corpus (23)
- Echoes of ECOs: gravitational-wave signatures of exotic compact objects and of quantum corrections at the horizon scale
- Model Waveform Accuracy Standards for Gravitational Wave Data Analysis
- Tests for the existence of horizons through gravitational wave echoes
- Light rings as observational evidence for event horizons: long-lived modes, ergoregions and nonlinear instabilities of ultracompact objects
- Two timescale analysis of extreme mass ratio inspirals in Kerr. I. Orbital Motion
- Using LISA EMRI sources to test off-Kerr deviations in the geometry of massive black holes
- A recipe for echoes from exotic compact objects
- FastEMRIWaveforms: New tools for millihertz gravitational-wave data analysis
- Ergoregion instability of ultra-compact astrophysical objects
- Extreme- and Intermediate-Mass Ratio Inspirals in Dynamical Chern-Simons Modified Gravity
- Tidal deformability and I-Love-Q relations for gravastars with polytropic thin shells
- How does a dark compact object ringdown?
- Tidal heating as a discriminator for horizons in extreme mass ratio inspirals
- A new gravitational wave generation algorithm for particle perturbations of the Kerr spacetime
- An Efficient Numerical Method for Computing Gravitational Waves Induced by a Particle Moving on Eccentric Inclined Orbits around a Kerr Black Hole
- Instability of hyper-compact Kerr-like objects
- Horizon-absorption effects in coalescing black-hole binaries: An effective-one-body study of the non-spinning case
- Damping of gravitational waves by matter
- Resonantly enhanced kicks from equatorial small mass-ratio inspirals
- Relating Follicly-Challenged Compact Stars to Bald Black Holes
- Oscillations in the EMRI gravitational wave phase correction as a probe of reflective boundary of the central black hole
- 2 Fast 2 Fiducial: Gaussian processes for the interpolation and marginalization of waveform error in extreme-mass-ratio-inspiral parameter estimation
- Absorption of Gravitational Waves from Distant Sources
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- Oscillations in the EMRI gravitational wave phase correction as a probe of reflective boundary of the central black hole
- Extreme Love in the SPA: constraining the tidal deformability of supermassive objects with extreme mass ratio inspirals and semi-analytical, frequency-domain waveforms
- Towards establishing the presence or absence of horizons in coalescing binaries of compact objects by using their gravitational wave signals
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- Gravitational-wave echoes from numerical-relativity waveforms via space-time construction near merging compact objects
- Equatorial extreme-mass-ratio inspirals in Kerr black holes with scalar hair spacetimes
- Imprint of black hole area quantization and Hawking radiation on inspiraling binary
- The shadows of accelerating Kerr-Newman black hole and constraints from M87*
- Probing fundamental physics with Extreme Mass Ratio Inspirals: a full Bayesian inference for scalar charge
- Testing gravity with Extreme-Mass-Ratio Inspirals
- Probing the quantum nature of black holes with ultra-light boson environments
- Quasinormal modes of slowly-spinning horizonless compact objects
- Whispers from the quantum core: the ringdown of semiclassical stars
- Inverse problem of analog gravity systems
- Resonant excitation of eccentricity in spherical extreme-mass-ratio inspirals
- Efficient search method of anomalous reflection by the central object in an EMRI system by future space gravitational wave detectors
- On the Interaction between Ultralight Bosons and Quantum-Corrected Black Holes
- Extreme mass ratio inspirals around topological stars
- Analytical model of precessing binaries using post-Newtonian theory in the extreme mass-ratio limit I: General Formalism
- Parametrized Tidal Dissipation Numbers of Non-rotating Black Holes
- Dynamical Tidal Response of Non-rotating Black Holes: Connecting the MST Formalism and Worldline EFT
- Limits on the existence of totally reflective exotic compact objects with current and future gravitational-wave detectors
- Binary black holes in the heat of merger
- Macroscopic backreaction of the trace anomaly on classical vacuum backgrounds
- Extreme mass-ratio inspirals as probes of scalar fields: eccentric equatorial orbits around Kerr black holes
- Resonances, black hole mimickers and the greenhouse effect: consequences for gravitational-wave physics