Metraipolis › archive › dc_dec29bc18ee9

Detectability-Aware Screening of Post-Merger Gravitational-Wave Damping Anomalies in Real Detector Noise: A Graph-Spectral Approach with Empirical Null Calibration — arXiv:2609.00095

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.00095
License (as archived): CC0-1.0
Archived: 2026-10-17T07:28:02.268Z
SHA-256 of the archived text: 45a47302176334e6360c1716f8f2e3fa4f10d8ca7c10151466e855c55c524467
Stable URL of this page: https://metraipolis.com/documento/dc_dec29bc18ee9

How to cite

Detectability-Aware Screening of Post-Merger Gravitational-Wave Damping Anomalies in Real Detector Noise: A Graph-Spectral Approach with Empirical Null Calibration — arXiv:2609.00095 — arXiv (en), https://arxiv.org/abs/2609.00095 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_dec29bc18ee9 (Metraipolis archive dc_dec29bc18ee9, sha256 45a47302176334e6360c1716f8f2e3fa4f10d8ca7c10151466e855c55c524467)

BibTeX

@misc{dcdec29bc18ee9,
  title = {Detectability-Aware Screening of Post-Merger Gravitational-Wave Damping Anomalies in Real Detector Noise: A Graph-Spectral Approach with Empirical Null Calibration — arXiv:2609.00095},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.00095},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_dec29bc18ee9; sha256 45a47302176334e6360c1716f8f2e3fa4f10d8ca7c10151466e855c55c524467},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.00095. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

A two-stage methodological proof of concept for screening simplified post-merger gravitational-wave damping anomalies in real LIGO Livingston noise is presented. The injected signal is a controlled damped-sinusoid proxy rather than a physically complete binary-neutron-star post-merger waveform; it is used to test statistical detectability and damping-time scoring under real-noise calibration. Stage 1 constructs a local time-frequency graph from Constant-Q representations of whitened candidate windows and uses the leading eigenvalue as a detectability statistic, with its null distribution calibrated empirically on real detector noise. Stage 2 estimates an effective damping-time score for Stage-1-passing candidates using nonlinear least squares and an interpretable ridge/energy-decay estimator, with thresholds fixed before final held-out evaluation. The matched-filter SNR convention is checked with synthetic Gaussian noise, while the graph statistic is assessed through power-comparison and tile-shuffling tests. On a held-out real-noise test block, the nonlinear least-squares Stage-2 score gives AUC = 0.943 and TPR = 0.879 at FPR = 0.012, outperforming a calibrated power-only baseline.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-09-02 in astro-ph.IM).
Categorie arXiv: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; General Relativity and Quantum Cosmology (gr-qc).
Pagina del lavoro: https://arxiv.org/abs/2609.00095 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-17T07:19:24.014Z dalla pagina https://arxiv.org/catchup/astro-ph.IM/2026-09-02?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).