Adding equatorial-asymmetric effects for spin-precessing binaries into the seobnrv5phm waveform model

Gravitational waves from spin-precessing binaries exhibit equatorial asymmetries absent in nonprecessing systems, leading to net linear momentum emission and contributing to the remnant’s recoil. This effect, recently incorporated into only a few waveform models, is crucial for accurate recoil predictions and improved parameter estimation. We present an upgrade to the v5 model— SEOBNRv 5 PHM w / asym —which includes equatorial asymmetric contributions to the ℓ = m ≤ 4 waveform modes in the co-precessing frame. The model combines post-Newtonian inputs with calibrated amplitude and phase corrections and a phenomenological merger-ringdown description, tuned against 1523 quasicircular spin-precessing…

• NS
  National Science and Technology Council
• NS
  National Science Foundation
• MO
  Ministry of Education, Culture, Sports, Science and Technology
• AS
  Academia Sinica
• NR
  National Research Foundation of Korea
• CN
  Centre National de la Recherche Scientifique
• MO
  Ministry of Science and ICT, South Korea
• MP
  Max Planck School of Photonics
• SA
  Science and Technology Facilities Council
• ER
  European Research Council

  Award: GWSky-101167314
• AR
  Australian Research Council
• JS
  Japan Society for the Promotion of Science
• IN
  Instituto Nazionale di Fisica Nucleare