Eccentricity estimate for black hole mergers with numerical relativity simulations
Sign Up to like & getrecommendations! Published in 2022 at "Nature Astronomy"
DOI: 10.1038/s41550-021-01568-w
Abstract: The origin of black hole mergers discovered by the LIGO 1 and Virgo 2 gravitational-wave observatories is currently unknown. GW190521 3 , 4 is the heaviest black hole merger detected so far. Its observed high… read more here.
Keywords: numerical relativity; eccentricity; hole mergers; hole ... See more keywords
A no-boundary method for numerical relativity
Sign Up to like & getrecommendations! Published in 2020 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ab5e99
Abstract: We propose a method for numerical relativity in which the spatial grid is finite and no outer boundary condition is needed. As a "proof of concept" we implement this method for the case of a… read more here.
Keywords: boundary method; numerical relativity; method numerical;
Numerical relativity multimodal waveforms using absorbing boundary conditions
Sign Up to like & getrecommendations! Published in 2024 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ad65af
Abstract: Errors due to imperfect boundary conditions in numerical relativity simulations of binary black holes (BBHs) can produce unphysical reflections of gravitational waves which compromise the accuracy of waveform predictions, especially for subdominant modes. A system… read more here.
Keywords: absorbing boundary; numerical relativity; relativity multimodal; boundary conditions ... See more keywords
A review of gravitational memory and BMS frame fixing in numerical relativity
Sign Up to like & getrecommendations! Published in 2024 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ad83c2
Abstract: Gravitational memory effects and the BMS freedoms exhibited at future null infinity have recently been resolved and utilized in numerical relativity simulations. With this, gravitational wave models and our understanding of the fundamental nature of… read more here.
Keywords: gravitational memory; memory; memory effects; relativity ... See more keywords
Noise residuals for GW150914 using maximum likelihood and numerical relativity templates
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2019/05/014
Abstract: We reexamine the results presented in a recent work by Nielsen et al. [1], in which the properties of the noise residuals in the 40\,ms chirp domain of GW150914 were investigated. This paper confirmed the… read more here.
Keywords: numerical relativity; template; maximum likelihood; noise residuals ... See more keywords
First investigation of void statistics in numerical relativity simulations
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae2737
Abstract: We apply and extend standard tools for void statistics to cosmological simulations that solve Einstein’s equations with numerical relativity (NR). We obtain a simulated void catalogue without Newtonian approximations, using a new watershed void finder which… read more here.
Keywords: void statistics; first investigation; investigation void; numerical relativity ... See more keywords
Identification of exotic compact binaries with gravitational waves: A phenomenological approach
Sign Up to like & getrecommendations! Published in 2025 at "Physical Review D"
DOI: 10.1103/76dz-vs8j
Abstract: Gravitational wave (GW) astronomy has been hailed as a gateway to discovering unexpected phenomena in the universe. Over the last decade there have been close to one hundred GW observations of compact-binary mergers. While these… read more here.
Keywords: phenomenological approach; exotic compact; numerical relativity; black holes ... See more keywords
Tidal Resonance in Binary Neutron Star Inspirals: A High-Precision Study in Numerical Relativity.
Sign Up to like & getrecommendations! Published in 2024 at "Physical review letters"
DOI: 10.1103/j3zk-z17h
Abstract: We investigate the tidal resonance of the fundamental (f) mode in spinning neutron stars, robustly tracing the onset of the excitation to its saturation, using numerical relativity for the first time. We performed long-term (≈15… read more here.
Keywords: resonance; neutron star; numerical relativity; tidal resonance ... See more keywords
Computing fast and reliable gravitational waveforms of binary neutron star merger remnants
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.043005
Abstract: Gravitational waves have been detected from the inspiral of a binary neutron-star, GW170817, which allowed constraints to be placed on the neutron star equation of state. The equation of state can be further constrained if… read more here.
Keywords: neutron star; merger; post merger; numerical relativity ... See more keywords
Precessing numerical relativity waveform surrogate model for binary black holes: A Gaussian process regression approach
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.063011
Abstract: Gravitational wave astrophysics relies heavily on the use of matched filtering both to detect signals in noisy data from detectors, and to perform parameter estimation on those signals. Matched filtering relies upon prior knowledge of… read more here.
Keywords: black holes; relativity; binary black; numerical relativity ... See more keywords
Numerical relativity simulation of GW150914 beyond general relativity
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.104016
Abstract: We produce the first astrophysically relevant numerical binary black hole gravitational waveform in a higher-curvature theory of gravity beyond general relativity. We simulate a system with parameters consistent with GW150914, the first LIGO detection, in… read more here.
Keywords: gw150914; general relativity; relativity; relativity simulation ... See more keywords