Leveraging NRTidalv3 to develop gravitational waveform models with higher-order modes for binary neutron star systems
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866908603304116224 |
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| author | Abac, Adrian Vidal, Felip A. Ramis Colleoni, Marta Puecher, Anna Gonzalez, Alejandra Dietrich, Tim |
| author_facet | Abac, Adrian Vidal, Felip A. Ramis Colleoni, Marta Puecher, Anna Gonzalez, Alejandra Dietrich, Tim |
| contents | Accurate and reliable gravitational waveform models are crucial in determining the properties of compact binary mergers. In particular, next-generation gravitational-wave detectors will require more accurate waveforms to avoid biases in the analysis. In this work, we extend the recent NRTidalv3 model to account for higher-mode corrections in the tidal phase contributions for binary neutron star systems. The higher-mode, multipolar NRTidalv3 model is then attached to several binary-black-hole baselines, such as the phenomenological IMRPhenomXHM and IMRPhenomXPHM models, and the effective-one-body-based model SEOBNRv5HM_ROM. We test the performance and validity of the newly developed models by comparing them with numerical-relativity simulations and other tidal models. Finally, we employ them in parameter estimation analyses on simulated signals from both comparable-mass and high-mass-ratio systems, as well as on the gravitational-wave event GW170817, for which we find consistent results with respect to previous analyses. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_15426 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Leveraging NRTidalv3 to develop gravitational waveform models with higher-order modes for binary neutron star systems Abac, Adrian Vidal, Felip A. Ramis Colleoni, Marta Puecher, Anna Gonzalez, Alejandra Dietrich, Tim General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena Accurate and reliable gravitational waveform models are crucial in determining the properties of compact binary mergers. In particular, next-generation gravitational-wave detectors will require more accurate waveforms to avoid biases in the analysis. In this work, we extend the recent NRTidalv3 model to account for higher-mode corrections in the tidal phase contributions for binary neutron star systems. The higher-mode, multipolar NRTidalv3 model is then attached to several binary-black-hole baselines, such as the phenomenological IMRPhenomXHM and IMRPhenomXPHM models, and the effective-one-body-based model SEOBNRv5HM_ROM. We test the performance and validity of the newly developed models by comparing them with numerical-relativity simulations and other tidal models. Finally, we employ them in parameter estimation analyses on simulated signals from both comparable-mass and high-mass-ratio systems, as well as on the gravitational-wave event GW170817, for which we find consistent results with respect to previous analyses. |
| title | Leveraging NRTidalv3 to develop gravitational waveform models with higher-order modes for binary neutron star systems |
| topic | General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2507.15426 |