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Targeted large mass ratio numerical relativity surrogate waveform model for GW190814

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arxiv 2203.10109 v2 pith:OIL73YWV submitted 2022-03-18 gr-qc astro-ph.HE

Jooheon Yoo , Vijay Varma , Matthew Giesler , Mark A. Scheel , Carl-Johan Haster , Harald P. Pfeiffer , Lawrence E. Kidder , Michael Boyle This is my paper · ORCID
classification gr-qcastro-ph.HE
keywords massmodelgw190814largeodotratiogw190814-likemasses
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abstract

Gravitational wave observations of large mass ratio compact binary mergers like GW190814 highlight the need for reliable, high-accuracy waveform templates for such systems. We present NRHybSur2dq15, a new surrogate model trained on hybridized numerical relativity (NR) waveforms with mass ratios $q\leq15$, and aligned spins $|\chi_{1z}|\leq0.5$ and $\chi_{2z}=0$. We target the parameter space of GW190814-like events as large mass ratio NR simulations are very expensive. The model includes the (2,2), (2,1), (3,3), (4,4), and (5,5) spin-weighted spherical harmonic modes, and spans the entire LIGO bandwidth (with $f_{\mathrm{low}}=20$ Hz) for total masses $M \gtrsim 9.5 \, M_{\odot}$. NRHybSur2dq15 accurately reproduces the hybrid waveforms, with mismatches below $\sim 2 \times 10^{-3}$ for total masses $10 \, M_{\odot} \leq M \leq 300 \, M_{\odot}$. This is at least an order of magnitude improvement over existing semi-analytical models for GW190814-like systems. Finally, we reanalyze GW190814 with the new model and obtain source parameter constraints consistent with previous work.

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Cited by 4 Pith papers

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

  1. Fixing the center-of-mass frame of numerical relativity waveforms using the post-Newtonian center-of-mass charge

    gr-qc 2026-03 conditional novelty 6.0 of 10

    A post-Newtonian model of the boosted center-of-mass charge makes BMS frame-fixing of nonprecessing, unequal-mass NR waveforms less sensitive to the fitting window, reducing parameter variance by up to ~25x.

  2. Advancing the Effective-One-Body Framework in the Test-Mass Limit

    gr-qc 2026-03 conditional novelty 6.0 of 10

    SEOB-TML cuts dephasing by up to an order of magnitude in the test-mass limit by Q-factorizing the flux (including horizon absorption) and by modeling mode mixing with extracted QNM coefficients.

  3. Searching for intermediate mass ratio binary black hole mergers in the third observing run of LIGO-Virgo-KAGRA

    gr-qc 2025-07 conditional novelty 6.0 of 10

    No confident intermediate mass ratio inspirals are found in LIGO-Virgo-KAGRA O3 data, yielding 90% upper limits of roughly 30-1000 Gpc^-3 yr^-1 on their local merger rate and showing higher modes boost search volume b...

  4. PhenomXPNR: An improved gravitational wave model linking precessing inspirals and NR-calibrated merger-ringdown

    gr-qc 2025-07 conditional novelty 4.0 of 10

    PhenomXPNR is a fast frequency-domain gravitational-wave template for spinning black-hole mergers that combines post-Newtonian inspiral precession with numerical-relativity-calibrated merger and ringdown.

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