Pith. sign in

REVIEW 4 cited by

Testing the Kerr black hole hypothesis with GRS 1716-249 by combining the continuum-fitting and the iron-line methods

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 2106.03086 v2 pith:SZZ2WTLZ submitted 2021-06-06 astro-ph.HE gr-qc

Zuobin Zhang , Honghui Liu , Askar B. Abdikamalov , Dimitry Ayzenberg , Cosimo Bambi , Menglei Zhou This is my paper
classification astro-ph.HEgr-qc
keywords blackmethodscontinuum-fittingholeiron-lineholeskerrobservations
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

The continuum-fitting and the iron-line methods are currently the two leading techniques for measuring the spins of accreting black holes. In the past few years, these two methods have been developed for testing fundamental physics. In the present work, we employ state-of-the-art models to test black holes through the continuum-fitting and the iron-line methods and we analyze three NuSTAR observations of the black hole binary GRS 1716-249 during its outburst in 2016-2017. In these three observations, the source was in a hard-intermediate state and the spectra show both a strong thermal component and prominent relativistic reflection features. Our analysis confirms the Kerr nature of the black hole in GRS 1716-249 and provides quite stringent constraints on possible deviations from the predictions of general relativity.

Discussion (0). Sign in to comment.

Forward citations

Cited by 4 Pith papers

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

  1. Improved Constraints on Non-Kerr Deviations from Binary Black Hole Inspirals Using GWTC-4 Data

    gr-qc 2026-04 conditional novelty 4.0 of 10

    GWTC-4 inspirals yield tighter constraints on Johannsen parameters α13 and ε3, both consistent with zero and thus with the Kerr geometry.

  2. Improved Constraints on Non-Kerr Deviations from Binary Black Hole Inspirals Using GWTC-4 Data

    gr-qc 2026-04 unverdicted novelty 3.0 of 10

    Bayesian constraints from GWTC-4 binary black hole inspirals show Johannsen metric deformation parameters α13 and ε3 consistent with zero, supporting the Kerr hypothesis.

  3. Physics and Astrophysics of Black Holes with eXTP

    astro-ph.HE 2026-07 accept novelty 2.0 of 10

    eXTP’s larger effective area and simultaneous polarimetry will tighten black-hole spin and Kerr-deviation constraints relative to NICER for the same exposure.

  4. Stellar-Mass Black Holes

    astro-ph.HE 2025-07 conditional novelty 1.0 of 10

    A concise review of stellar-mass black hole physics and observations, plus a speculative interstellar mission concept.

Pith tools