IGWM 2025

Session

Session VIII

Jun 24, 2025, 4:00 PM

Auditorium (CIEMAT (Madrid, Spain))

Conveners

Session VIII

• Mikael Chala (Universidad de Granada)

8. Modeling the complete (l=2,m=0) mode in aligned-spin and precessing binary black holes: applications to parameter estimation

Maria Rosselló Sastre (Universitat de les Illes Balears)

6/24/25, 4:00 PM

Gravitational waves from binary black hole mergers encode astrophysical information in multiple spherical harmonic modes. While dominant and subdominant modes have been extensively studied, the (l=2, m=0) mode has only recently been incorporated into waveform models.
We present a phenomenological waveform model for the (2,0) mode, capturing its two components: the non-oscillatory displacement...

10. IMRPhenomXHM_NSBH: A Fast and Accurate Gravitational-Wave Model for Neutron Star–Black Hole Coalescences

Felip Antoni Ramis Vidal (Universitat de les Illes Balears)

6/24/25, 4:20 PM

Theory and phenomenology

We present IMRPhenomXHM_NSBH, a new phenomenological model for graviational-wave (GW) emission from neutron star–black hole (NSBH) coalescences. This model features a newly developed numerical relativity (NR)-calibrated amplitude prescription incorporating tidal contributions up to 7.5PN order, a phasing model tuned to NR simulations incorporating dynamical tidal effects (NRTidalv3), and the...

45. Tidal effects in compact binaries within the post-Newtonian framework

Dr Quentin Henry (Universitat de les Illes Balears)

6/24/25, 4:40 PM

Theory and phenomenology

Since the first detection of a binary neutron star system, GW170817, the number of compact binary systems involving neutron stars observed by the LVK network has continued to grow. The tidal deformability of neutron stars influences the gravitational waves emitted during inspiral phase, making these effects observable. Consequently, waveform models used to analyze such signals must incorporate...