Effective one-body multipolar waveform model for spin-aligned, quasicircular, eccentric, hyperbolic black hole binaries

Nagar, Alessandro; Bonino, Alice; Rettegno, P.

doi:10.1103/physrevd.103.104021

Cited by 96 publications

(79 citation statements)

References 43 publications

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“…Until then, one could still use the partial 5.5PN SO results in EOB waveform models complemented by NR calibration. Such an implementation would be straightforward, since we obtained the gyro-gravitomagnetic factors that enter directly into the SEOBNR [154][155][156] and TEOBResumS [142,158,161] waveform models, and less directly in the IMRPhenom models [213][214][215][216], which are used in GW analyses.…”

Section: A Radial Actionmentioning

confidence: 99%

“…Thereby, extending each approximation's domain of validity and improving the inspiral-merger-ringdown waveforms. EOB models have been constructed for nonspinning [10,[138][139][140][141][142], spinning [143][144][145][146][147][148][149][150][151][152][153][154][155][156][157][158], and eccentric binaries [159][160][161][162]. In addition, information from the post-Minkowskian [54,55,163,164] and the small mass-ratio approximations [165][166][167][168] have been incorporated in EOB Hamiltonians.…”

Section: Introductionmentioning

confidence: 99%

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Gravitational spin-orbit dynamics at the fifth-and-a-half post-Newtonian order

Khalil

2021

Preprint

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Accurate waveform models are crucial for gravitational-wave data analysis, and since spin has a significant effect on the binary dynamics, it is important to improve the spin description in these models. In this paper, we derive the spin-orbit (SO) coupling at the fifth-and-a-half post-Newtonian (5.5PN) order. The method we use splits the conservative dynamics into local and nonlocal-in-time parts, then relates the local-in-time part to gravitational self-force results by exploiting the simple mass-ratio dependence of the post-Minkowskian expansion of the scattering angle. We calculate the nonlocal contribution to the 5.5PN SO dynamics to eighth order in the small-eccentricity expansion for bound orbits, and to leading order in the large-eccentricity expansion for unbound orbits. For the local contribution, we obtain all the 5.5PN SO coefficients from first-order self-force results for the redshift and spin-precession invariants, except for one unknown that could be fixed in the future by second-order self-force results. However, by incorporating our 5.5PN results in the effective-onebody formalism and comparing its binding energy to numerical relativity, we find that the remaining unknown has a small effect on the SO dynamics, demonstrating an improvement in accuracy at that order.

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Section: A Radial Actionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gravitational spin-orbit dynamics at the fifth-and-a-half post-Newtonian order

Khalil

2021

Preprint

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“…Motivated by recent observational hints for eccentric and hyperbolic binary black hole mergers in some LIGO-Virgo events [1][2][3] and by future prospect of detecting binary sources on generic orbits with LISA [4][5][6], the analytical relativity community has intensified the efforts in building up accurate gravitational-wave (GW) models for noncircularized coalescing compact binaries [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Among the possible approaches, the effective-one-body (EOB) framework [22][23][24][25][26] offers a theoretically complete method for a unified description of different classes of astrophysical binaries, from the comparable masses to the intermediate and extreme mass-ratio regimes, and for incorporating the fast motion and ringdown dynamics.…”

Section: Introductionmentioning

confidence: 99%

“…The generalization of the quasicircular EOB model TEOBResumS [28,29] to nonquasicircular configurations [9,10,12] has allowed the construction of the first, and currently only, waveform model for spin-aligned black hole binaries that can accurately deal with both hyperbolic captures [10,12,13,30,31] and eccentric inspirals [9,12,13]. The model of Ref.…”

Section: Introductionmentioning

confidence: 99%

“…The model of Ref. [9,12] has been used to analyze the GW source GW190521 [1,32] under the hypothesis of a hyperbolic capture [3]. In its latest avatar [13], the TEOBResumS model for generic, but pla-nar, orbital motion displays: (i) an excellent agreement (EOB/NR unfaithfulness mostly around 0.1% except a single outlier ∼ 1%) with the 28 Numerical Relativity (NR) public simulations of eccentric inspirals of the Simulating eXtreme Spacetimes (SXS) catalog and (ii) a high consistency (maximum disagreement ∼ 4% for the most relativistic configurations) with the only available NR calculation of the scattering angle [33].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Effective-One-Body Radiation Reactions for Generic Planar Orbits

Albanesi,

Nagar,

Bernuzzi

et al. 2022

Preprint

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In this paper we assess the performances of different analytical prescriptions for the effectiveone-body (EOB) radiation reaction along generic planar orbits using exact numerical result in the test-mass limit. We consider three prescriptions put forward in the recent literature: (i) the quasicircular prescription (QC), (ii) the QC with 2 post-Newtonian noncircular corrections (QC2PN), (iii) the QC corrected by the noncircular Newtonian prefactor (NCN). The analytical fluxes are then compared against the exact fluxes that are computed by solving the Teukolsky equation with a testmass source in geodesic motion. We find that the NCN prescription is the most accurate for both eccentric and hyperbolic orbits and it is in robust agreement also for large values of the eccentricity. This result carries over to the comparable masses, as we discuss for a numerical-relativity (NR) case study. We also demonstrate that, while the EOB/NR waveform unfaithfulness is a necessary check for the precision of EOB models, the direct comparison of EOB/NR fluxes is a more stringent and informative test to select the best prescription. Finally, we propose an improved NCN2PN radiation reaction that includes noncircular 2PN corrections, in resummed form, as a further multiplicative contribution and that is valid for any mass ratio.

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