Pith. sign in

REVIEW 3 cited by

Superradiance in Kerr-like black holes

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2102.03152 v2 pith:ANEOOOJW submitted 2021-02-05 gr-qc astro-ph.HE

Edgardo Franzin , Stefano Liberati , Mauro Oi This is my paper · ORCID
classification gr-qcastro-ph.HE
keywords blackkerrsuperradiancedeformationfieldsholeskerr-likeparameter
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

Recent strong-field regime tests of gravity are so far in agreement with general relativity. In particular, astrophysical black holes appear all to be consistent with the Kerr spacetime, but the statistical error on current observations allows for small yet detectable deviations from this description. Here we study superradiance of scalar and electromagnetic test fields around the Kerr-like Konoplya--Zhidenko black hole and we observe that for large values of the deformation parameter superradiance is highly suppressed with respect to the Kerr case. Surprisingly, there exists a range of small values of the deformation parameter for which the maximum amplification factor is larger than the Kerr one. We also provide a first result about the superradiant instability of these non-Kerr spacetimes against massive scalar fields.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Probing the Unstable Spectrum of Schwarzschild-like Black Holes

    gr-qc 2025-01 conditional novelty 6.0 of 10

    The quasinormal mode spectrum of physically deformed Schwarzschild-like black holes stays unstable, contradicting the expectation that displaced spectra become stable.

  2. The Spectroscopy of the 2+1 Dimensional Analog Black Hole in Photon-Fluid Model

    gr-qc 2025-09 conditional novelty 5.0 of 10

    For the 2+1D photon-fluid analog black hole, the paper derives exact quasibound states, Hawking radiation, superradiance amplification, and greybody factors, finding superradiance for ̟ < ω < m_l Ω_H.

  3. The Spectroscopy of Kerr-Einstein-Maxwell-Dilaton-Axion: Exact Quasibound States, Scalar Cloud, Horizon's Boson Statistics and Superradiance

    gr-qc 2025-01 reject novelty 4.0 of 10

    Exact confluent-Heun solutions for massive scalar fields around Kerr-EMDA black holes yield quantized quasibound frequencies, but the scalar cloud and Hawking flux results rely on dropped or discarded terms.

Pith tools