Effective one body description of tidal effects in inspiralling compact binaries
186 citations recorded by the source corpus.
The late part of the gravitational wave signal of binary neutron-star (or black-hole-neutron-star) inspirals can in principle yield crucial information on the nuclear equation of state via its dependence on relativistic tidal parameters. In the hope of analytically describing the gravitational wave phasing during the late inspiral (essentially up to merger) we propose an extension of the effective one body (EOB) formalism which includes tidal effects. We compare the prediction of this tidal-EOB formalism to recently computed nonconformally flat quasiequilibrium circular sequences of binary neutron-star systems. Our analysis suggests the importance of higher-order (post-Newtonian) corrections to tidal effects, even beyond the first post-Newtonian order, and their tendency to significantly increase the 'effective tidal polarizability' of neutron stars. We propose to use the EOB description up to the moment where the tidally deformed compact objects formally enter 'into contact'. We compare the EOB predictions to some recently advocated, nonresummed, post-Newtonian based ('Taylor-T4') description of the phasing of inspiralling systems. This comparison shows the strong sensitivity of the late-inspiral phasing to the choice of the analytical model. A sufficiently accurate numerical-relativity - 'calibrated' EOB model might, however, give us a reliable analytical description of the late inspiral of compact binaries (and mightmore » also help in predicting the conditions necessary for the generation of short gamma-ray bursts).« less
Subfields: Astronomy and Astrophysics, Computational Mechanics
View Paper: https://www.semanticscholar.org/paper/d9ced1b40fad36f24d8c5901b9c082172134dba7
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In Astronomy and Astrophysics
- D. Holz
- Maya Fishbach
- Ilya Mandel
- Luca Baiotti
- Bernard F. Schutz
- E. Thrane
- Michela Mapelli
- R. O’Shaughnessy
In Computational Mechanics
Citations in the corpus
- GW170817: Joint Constraint on the Neutron Star Equation of State from Multimessenger Observations (2017, background): “…polarizability of the NSs is encoded in the phase evolution of the gravitational wave (GW) signal during the inspiral (Flanagan & Hinderer 2008; Damour & Nagar 2010; Hinderer et al. 2010, 2016; Damour et al. 2012; Del Pozzo et al. 2013; Read et al. 2013; Favata 2014; Wade et al. 2014; Bernuzzi…”
- Constraining the Maximum Mass of Neutron Stars from Multi-messenger Observations of GW170817 (2017, unknown): “Methods to measure NS radii from GWs include searching for tidal effects on the waveform during the final stages of the BNS inspiral (Hinderer et al. 2010; Damour & Nagar 2010; Damour ar X iv :1 71 0.”
- GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs (2018, background): “[98] Thibault Damour and Alessandro Nagar, “Effective One Body description of tidal effects in inspiralling compact binaries,” Phys.”
- Unequal mass binary neutron star mergers and multimessenger signals (2016, background): “The dependence of tidal effects on the binary’s dynamics can be expressed via κ2 for the binary in terms of the individual k (i) 2 , defined as [36, 37]”