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Simple model of complete precessing black-hole-binary gravitational waveforms.

Mark Hannam1, Patricia Schmidt2, Alejandro Bohé3

  • 1School of Physics and Astronomy, Cardiff University, Queens Building, CF24 3AA Cardiff, United Kingdom.

Physical Review Letters
|November 7, 2014
PubMed
Summary

We developed PhenomP, the first frequency-domain model for spinning black hole binary gravitational waves. This model efficiently captures complex binary dynamics using only three key physical parameters for advanced detector era applications.

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Area of Science:

  • Astrophysics
  • Gravitational Wave Astronomy
  • General Relativity

Background:

  • Modeling gravitational-wave signals from spinning black hole binaries is crucial for upcoming gravitational-wave astronomy.
  • Existing models often struggle to capture the full complexity of generic binary configurations.

Purpose of the Study:

  • To present PhenomP, the first frequency-domain model for gravitational-wave signals from generic spinning black hole binaries.
  • To capture the essential phenomenology of spinning binary systems with a reduced parameter space.

Main Methods:

  • Developed a frequency-domain model, PhenomP, incorporating inspiral, merger, and ringdown phases.
  • Utilized three key physical parameters: mass ratio, effective total spin, and effective precession spin.
  • Constructed the model using an underlying nonprecessing-binary model and approximate precessional motion expressions.

Main Results:

  • PhenomP successfully models the seven-dimensional parameter space of spinning binary black holes with only three parameters.
  • The model is designed for the frequency domain, essential for efficient gravitational-wave data analysis.
  • Model fidelity was validated against hybrid post-Newtonian-numerical-relativity waveforms.

Conclusions:

  • PhenomP provides an efficient and accurate waveform model for generic spinning black hole binaries.
  • This model will facilitate the development of gravitational-wave searches and astrophysical measurements.
  • It serves as a foundational framework for future generic-binary waveform modeling in the advanced detector era.