First survey of spinning eccentric black hole mergers: Numerical relativity simulations, hybrid waveforms, and parameter estimation
Year: 2020
Type: article
Abstract: We analyze a new numerical relativity dataset of spinning but nonprecessing binary black holes on eccentric orbits, with eccentricities from approximately 0.1 to 0.5, with dimensionless spins up to 0.75 included at mass ratios $q={m}_{1}/{m}_{2}=(1,2)$, and further nonspinning binaries at mass ratios $q=(1.5,3,4)$. A comparison of the final mass and spin of these simulations with noneccentric data extends previous results in the literature on circularization of eccentric binaries to the spinning case. For the $(l,m)=(2,2)$ spin-weighted spherical harmonic mode, we construct eccentric hybrid waveforms that connect the numerical relativity data to a post-Newtonian description for the inspiral, and we discuss the limitations in the current knowledge about post-Newtonian theory which complicate the generation of eccentric hybrid waveforms. We also perform a Bayesian parameter estimation study, quantifying the parameter biases introduced when using three different quasicircular waveform models to estimate the parameters of highly eccentric binary systems. We find that the used aligned-spin quasicircular model including higher order modes produces lower bias in certain parameters than the nonprecessing quasicircular model without higher order modes and the quasicircular precessing model.
Institutions: Universitat de les Illes Balears, University of Birmingham
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: Ministerio de Ciencia, Innovación y Universidades, European Cooperation in Science and Technology, Partnership for Advanced Computing in Europe AISBL, Federación Española de Enfermedades Raras, Generalitat Valenciana, Barcelona Supercomputing Center, Red Española de Esclerosis Múltiple, Agencia Estatal de Investigación, H2020 Marie Skłodowska-Curie Actions
Awards: G1149363277, G1364038514, G1410244055, G1728707346, G2722516641, G2807307583, G3363815362, G3722196896, G3879680203, G4210212669, G4296092131, G4404171571, G4992082612, G528514929, G5417504780, G549284044, G5869177097, G6496089293, G8646725534, G8674788341, Gravitational waves from extreme mass-ratio inspirals
OpenAlex ID: W2975867611