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Systematic biases from ignoring environmental tidal effects in gravitational wave observations

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arxiv 2503.10746 v2 pith:7VRQJEEA submitted 2025-03-13 gr-qc astro-ph.COastro-ph.HE

Valerio De Luca , Loris Del Grosso , Francesco Iacovelli , Andrea Maselli , Emanuele Berti This is my paper · ORCID
classification gr-qcastro-ph.COastro-ph.HE
keywords binarygravitationaltidalbiasessystematicwavebinariesdeformability
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Binary black hole systems are typically assumed to evolve in vacuum. However, the environment surrounding the binary components can influence their properties, such as their tidal deformability, affecting the gravitational waveform produced by the binary and its interpretation in gravitational wave data analysis. In this work we focus on next-generation experiments, such as the Einstein Telescope and LISA, and we quantify the systematic biases in gravitational wave observations that arise when tidally deformed binaries are interpreted as occurring in vacuum. We consider binaries over a range of masses and we compare different phenomenological models for the dynamical evolution of the tidal deformability. We find that systematic biases could significantly affect the measurability of the binary parameters if tidal effects are not carefully modeled.

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Cited by 3 Pith papers

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

  1. Tidal Love numbers of multi-state Boson stars

    gr-qc 2026-07 conditional novelty 6.0 of 10

    Quadrupolar electric tidal Love numbers of multi-state boson stars flip from positive to negative when mu~1 > 0.891 or omega~0 > 0.777, while magnetic Love numbers stay negative.

  2. Scalar fields from nonlinear sigma models on black hole spacetimes

    gr-qc 2025-08 conditional novelty 6.0 of 10

    Numerical evolutions show positive-curvature SL(2,R) sigma-model scalars create denser clouds and earlier binary mergers, while negative-curvature O(3) scalars spread out and delay mergers.

  3. Revisiting GW150914 with a non-planar, eccentric waveform model

    gr-qc 2025-05 conditional novelty 5.0 of 10

    Using a waveform model that includes both eccentricity and spin precession, the authors confirm GW150914 was a quasi-circular, slowly spinning black hole merger, with eccentricity below 0.08 at 15 Hz.

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