First Eccentric Inspiral-Merger-Ringdown Analysis of Neutron Star-Black Hole Mergers
The gravitational wave event GW200105 was the first confident neutron star–black hole (NSBH) merger identified by the LIGO–Virgo–KAGRA collaboration. A recent analysis with an eccentric precessing waveform model that describes the inspiral phase of the l = 2 and m = {0, ±2} modes has identified this...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:dnet:digitalcsic_::16658775fd4b15e1ef6286ddc53fc0aa |
| Acceso en línea: | http://hdl.handle.net/10261/427691 |
| Access Level: | acceso abierto |
| Palabra clave: | Eccentricity Elliptical orbits Stellar mass black holes Neutron stars Bayesian statistics Posterior distribution Gravitational waves Gravitational wave sources Gravitational wave detectors Gravitational wave astronomy http://astrothesaurus.org/uat/441 http://astrothesaurus.org/uat/675 http://astrothesaurus.org/uat/677 http://astrothesaurus.org/uat/676 http://astrothesaurus.org/uat/1611 http://astrothesaurus.org/uat/1926 http://astrothesaurus.org/uat/1108 http://astrothesaurus.org/uat/678 http://astrothesaurus.org/uat/1900 http://astrothesaurus.org/uat/457 |
| Sumario: | The gravitational wave event GW200105 was the first confident neutron star–black hole (NSBH) merger identified by the LIGO–Virgo–KAGRA collaboration. A recent analysis with an eccentric precessing waveform model that describes the inspiral phase of the l = 2 and m = {0, ±2} modes has identified this event as the first NSBH merger with strong evidence of orbital eccentricity. In this paper we perform the first analysis of this event with an aligned-spin eccentric waveform model that describes the full inspiral, merger, and ringdown, includes subdominant harmonics, and is partially calibrated to numerical relativity simulations. This analysis confirms the results and finds evidence in favor of eccentricity even with a log-uniform prior in eccentricity. We also analyze the NSBH events GW200115 and GW230529, completing the analysis of all NSBHs with IMRPhenomTEHM, and find that these signal are consistent with vanishing eccentricity. Finally, we briefly discuss computational challenges when performing the analysis with time-domain eccentric waveform models. |
|---|