Oscillations in the EMRI gravitational wave phase correction as a probe of reflective boundary of the central black hole

@inproceedings{Sago2021OscillationsIT,
  title={Oscillations in the EMRI gravitational wave phase correction as a probe of reflective boundary of the central black hole},
  author={N. Sago and Takahiro Tanaka},
  year={2021}
}
We discuss the energy loss due to gravitational radiation of binaries composed of exotic objects whose horizon boundary conditions are replaced with reflective ones. Our focus is on the extreme mass-ratio inspirals in which the central heavier black hole is replaced with an exotic compact object. We show, in this case, a modulation of the energy loss rate depending on the evolving orbital frequency occurs and leads to two different types of modifications to the gravitational wave phase… Expand
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References

SHOWING 1-10 OF 63 REFERENCES
Distinguishing black holes from horizonless objects through the excitation of resonances during inspiral
How well is the vacuum Kerr geometry a good description of the dark, compact objects in our universe? Precision measurements of accreting matter in the deep infrared and gravitational-waveExpand
Tidal heating of quantum black holes and their imprints on gravitational waves
The characteristic difference between a black hole and other exotic compact objects (ECOs) is the presence of the horizon. The horizon of a classical black hole acts as a one-way membrane. Due toExpand
Extreme mass-ratio inspirals around a spinning horizonless compact object
Extreme mass-ratio inspirals (EMRIs) detectable by the Laser Interferometer Space Antenna (LISA) are unique probes of the nature of supermassive compact objects. We compute the gravitational-waveExpand
Gravitational-wave signatures of exotic compact objects and of quantum corrections at the horizon scale
Gravitational waves from binary coalescences provide one of the cleanest signatures of the nature of compact objects. It has been recently argued that the postmerger ringdown waveform of exoticExpand
Tidal heating as a discriminator for horizons in extreme mass ratio inspirals
The defining feature of a classical black hole is being a perfect absorber. Any evidence showing otherwise would indicate a departure from the standard black-hole picture. Energy and angular momentumExpand
Gravitational wave echoes from black hole area quantization
Gravitational-wave astronomy has the potential to substantially advance our knowledge of the cosmos, from the most powerful astrophysical engines to the initial stages of our universe. GravitationalExpand
Calculation of radiation reaction effect on orbital parameters in Kerr spacetime
We calculate the secular changes of the orbital parameters of a point particle orbiting a Kerr black hole, due to the gravitational radiation reaction. For this purpose, we use the post-NewtonianExpand
Probing the nature of central objects in extreme-mass-ratio inspirals with gravitational waves
We extend the work of Ryan on mapping the spacetime of the central object of an extreme mass-ratio inspiral (EMRI) by using gravitational waves (GWs) emitted by the system, which may be observed inExpand
Perturbations of a rotating black hole
Decoupled, separable equations describing perturbations of a Kerr black hole are derived. These equations can be used to study black-hole processes involving scalar, electromagnetic, neutrino orExpand
Gravitational condensate stars: An alternative to black holes
A new solution for the endpoint of gravitational collapse is proposed. By extending the concept of Bose-Einstein condensation to gravitational systems, a cold, compact object with an interior deExpand
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