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Reconstructing gravitational wave signals from binary black hole mergers with minimal assumptions

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arxiv 2003.09456 v2 pith:GTK4KP6T submitted 2020-03-20 gr-qc

Sudarshan Ghonge , Katerina Chatziioannou , James A. Clark , Tyson Littenberg , Margaret Millhouse , Laura Cadonati , Neil Cornish This is my paper
classification gr-qc
keywords simulatedanalysiseventsligosignalsignalsvirgoapproaches
verification ladder T0 review T1 audit T2 compute T3 formal
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We present a systematic comparison of the binary black hole (BBH) signal waveform reconstructed by two independent and complementary approaches used in LIGO and Virgo source inference: a template-based analysis, and a morphology-independent analysis. We apply the two approaches to real events and to two sets of simulated observations made by adding simulated BBH signals to LIGO and Virgo detector noise. The first set is representative of the 10 BBH events in the first Gravitational Wave Transient Catalog (GWTC-1). The second set is constructed from a population of BBH systems with total mass and signal strength in the ranges that ground based detectors are typically sensitive. We find that the reconstruction quality of the GWTC-1 events is consistent with the results of both sets of simulated signals. We also demonstrate a simulated case where the presence of a mismodelled effect in the observed signal, namely higher order modes, can be identified through the morphology-independent analysis. This study is relevant for currently progressing and future observational runs by LIGO and Virgo.

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Cited by 4 Pith papers

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

  1. GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run

    gr-qc 2020-10 accept novelty 7.0 of 10

    LIGO and Virgo detected 39 compact binary coalescence events in O3a, including 13 new ones, with black hole binaries up to 150 solar masses and the first significantly asymmetric mass ratios.

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

    gr-qc 2025-09 accept novelty 5.0 of 10

    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.

  3. Probing missing physics from inspiralling compact binaries via time-frequency tracks

    gr-qc 2025-07 conditional novelty 4.0 of 10

    A new time-frequency consistency test, built by stacking pixel energies along scaled orbital frequency tracks, flags deviations from General Relativity in injections and in GW190814 when higher modes are omitted.

  4. GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run

    gr-qc 2021-11 accept novelty 4.0 of 10

    GWTC-3 catalogs 90 compact binary coalescence events with p_astro > 0.5 from LIGO and Virgo's first three observing runs, including the first confident neutron star-black hole binaries.

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