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Revisiting the ringdown of GW150914

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arxiv 2202.02941 v2 pith:EIGEKXKC submitted 2022-02-07 gr-qc astro-ph.HE

Revisiting the ringdown of GW150914

Maximiliano Isi , Will M. Farr This is my paper
classification gr-qc astro-ph.HE
keywords ringdownanalysisblackclaimsdatagw150914holemerger
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We examine recent claims that evidence for an overtone in the ringdown of the GW150914 binary black hole merger was a result of noise anomalies. We cannot reproduce these claims, finding that our previous analysis of this event is robust to data analysis choices and consistent with the expectation that strain after the peak is well described as a superposition of quasinormal modes of the remnant black hole. We discuss the meaning and implications of establishing that any specific ringdown mode was detected, and argue that it is misguided to expect actual LIGO-Virgo data to inform the discussion of whether or why the merger looks linear.

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Cited by 6 Pith papers

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

  1. Foundations of Direct Waves in Schwarzschild Ringdown

    gr-qc 2026-07 accept novelty 7.0

    Direct waves in filtered Schwarzschild ringdown are the anti-causal filter-pole contribution sourced by near-horizon trajectory dynamics and do not vanish.

  2. Novel ringdown tests of general relativity with black hole greybody factors

    gr-qc 2026-04 unverdicted novelty 7.0

    GreyRing model based on greybody factors reproduces numerical relativity ringdown signals with mismatches of order 10^{-6} and enables a new post-merger consistency test of general relativity applied to GW250114.

  3. Probing higher curvature gravity via ringdown with overtones

    gr-qc 2025-12 conditional novelty 6.0

    Higher-curvature terms deform the near-horizon potential of spherically symmetric black holes, producing progressively larger shifts in overtone quasinormal frequencies that remain detectable in ringdown waveforms whe...

  4. Impact of sky localization uncertainty on ringdown inference

    gr-qc 2026-05 conditional novelty 5.0

    Properly accounting for sky localization uncertainty in ringdown inference widens mode-amplitude posteriors, avoids bias from fixed point estimates, and leaves amplitude ratios robust for Kerr spectroscopy.

  5. Ringdown Analysis of GW250114 with Orthonormal Modes

    gr-qc 2026-05 unverdicted novelty 5.0

    Orthonormal QNM analysis of GW250114 raises the significance of the first overtone of the ℓ=m=2 mode from 82.5% to 99.9% and detects no significant deviation from Kerr predictions.

  6. GW250114: testing Hawking's area law and the Kerr nature of black holes

    gr-qc 2025-09 accept novelty 5.0

    GW250114 data confirm the remnant black hole ringdown frequencies lie within 30% of Kerr predictions and that the final horizon area is larger than the sum of the progenitors' areas to high credibility.