# Gravitational radiation close to a black hole horizon: Waveform regularization and the out-going echo

@article{Srivastava2021GravitationalRC, title={Gravitational radiation close to a black hole horizon: Waveform regularization and the out-going echo}, author={Manu Srivastava and Yanbei Chen}, journal={Physical Review D}, year={2021} }

Black hole perturbation theory for Kerr black holes is best studied in the Newman Penrose (NP) Formalism, in which gravitational waves are described as perturbations in the Weyl scalars ψ0 and ψ4, with the governing equation being the well-known Teukolsky equation. Near infinity and near the horizon, ψ4 is dominated by the component that corresponds to waves propagating towards the positive radial direction, while ψ0 is dominated by the component that corresponds to waves that propagate towards…

## References

SHOWING 1-10 OF 96 REFERENCES

Tidal response and near-horizon boundary conditions for spinning exotic compact objects

- PhysicsPhysical Review D
- 2021

Teukolsky equations for |s| = 2 provide efficient ways to solve for curvature perturbations around Kerr black holes. Imposing regularity conditions on these perturbations on the future (past) horizon…

Gravitational wave echoes induced by a point mass plunging into a black hole

- Physics
- 2020

Recently, the possibility of detecting gravitational wave echoes in the data stream subsequent to the binary black hole mergers observed by LIGO was suggested. Motivated by this suggestion, we…

Gravitational wave signatures of the absence of an event horizon: Nonradial oscillations of a thin-shell gravastar

- Physics
- 2009

Gravitational waves from compact objects provide information about their structure, probing deep into strong-gravity regions. Here we illustrate how the presence or absence of an event horizon can…

Tidal coupling of a schwarzschild black hole and circularly orbiting moon

- Physics
- 2005

We describe the possibility of using the laser interferometer space antenna (LISA) 's gravitational-wave observations to study, with high precision, the response of a massive central body (e.g. a…

Event Horizon Telescope observations as probes for quantum structure of astrophysical black holes

- Physics
- 2018

The need for a consistent quantum evolution for black holes has led to proposals that their semiclassical description is modified not just near the singularity, but at horizon or larger scales. If…

Tidal heating of quantum black holes and their imprints on gravitational waves

- Physics
- 2020

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 to…

Gravitational-wave signatures of exotic compact objects and of quantum corrections at the horizon scale

- Physics
- 2016

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 exotic…

On perturbations of a Kerr black hole

- Physics
- 1973

Gravitational perturbations of a Kerr black hole are analyzed using the Newman‐Penrose formalism. Teukolsky has obtained decoupled wave equations for the perturbed Weyl tensor components ψ0 and ψ4.…

Scattering of Gravitational Radiation by a Schwarzschild Black-hole

- PhysicsNature
- 1970

An investigation of the scattering of gravitational waves by a Schwarzschild horizon finds some results obtained from a theoretically all possible modes in which the presence of a black-hole manifests itself.

Echoes from quantum black holes

- PhysicsPhysical Review D
- 2020

One of the most triumphant predictions of the theory if general relativity was the recent LIGO-Virgo detection of gravitational wave (GW) signals produced in binary black hole (BH) mergers. However,…