Results 41 to 50 of about 3,114,017 (331)

Luminosity distance and anisotropic sky-sampling at low redshifts: A numerical relativity study [PDF]

Physical Review D, 2021
Most cosmological data analysis today relies on the Friedmann-Lemaître-Robertson-Walker (FLRW) metric, providing the basis of the current standard cosmological model.
H. Macpherson, A. Heinesen
semanticscholar   +1 more source

High-overtone fits to numerical relativity ringdowns: Beyond the dismissed n=8 special tone [PDF]

Physical Review D, 2021
In general relativity, the remnant object originating from an uncharged black hole merger is a Kerr black hole. This final state is reached through the emission of a late train of radiation known as the black hole ringdown.
X. J. Forteza, P. Mourier
semanticscholar   +1 more source

Multimessenger Binary Mergers Containing Neutron Stars: Gravitational Waves, Jets, and γ-Ray Bursts

Frontiers in Astronomy and Space Sciences, 2021
Neutron stars (NSs) are extraordinary not only because they are the densest form of matter in the visible Universe but also because they can generate magnetic fields ten orders of magnitude larger than those currently constructed on earth.
Milton Ruiz, Stuart L. Shapiro, Stuart L. Shapiro, Antonios Tsokaros   +3 more
doaj   +1 more source

A review of gravitational memory and BMS frame fixing in numerical relativity [PDF]

Classical and quantum gravity
Gravitational memory effects and the BMS freedoms exhibited at future null infinity have recently been resolved and utilized in numerical relativity simulations.
Keefe Mitman, Michael Boyle, Leo C. Stein, Nils Deppe, Lawrence E. Kidder, Jordan Moxon, H. Pfeiffer, M. Scheel, S. Teukolsky, William Throwe, Nils L. Vu   +10 more
semanticscholar   +1 more source

First investigation of void statistics in numerical relativity simulations [PDF]

Monthly notices of the Royal Astronomical Society
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 ...
Michael J. Williams, H. Macpherson, David L Wiltshire, Chris Stevens   +3 more
semanticscholar   +1 more source

An ADM 3+1 formulation for Smooth Lattice General Relativity [PDF]

, 1997
A new hybrid scheme for numerical relativity will be presented. The scheme will employ a 3-dimensional spacelike lattice to record the 3-metric while using the standard 3+1 ADM equations to evolve the lattice.
Barret J W, Brewin L C, Brewin L C, Gentle A P, Laguna P Numerical relativity without finite differences, Leo Brewin   +5 more
core   +2 more sources

The Lagrangian numerical relativity code SPHINCS_BSSN_v1.0

Frontiers in Applied Mathematics and Statistics, 2023
We present version 1.0 of our Lagrangian numerical relativity code SPHINCS_BSSN. This code evolves the full set of Einstein equations, but contrary to other numerical relativity codes, it evolves the matter fluid via Lagrangian particles in the framework
Stephan Rosswog, Stephan Rosswog, Francesco Torsello, Peter Diener, Peter Diener   +4 more
doaj   +1 more source

Comparing remnant properties from horizon data and asymptotic data in numerical relativity [PDF]

Physical Review D, 2021
We present a new study of remnant black hole properties from 13 binary black hole systems, numerically evolved using the Spectral Einstein Code. The mass, spin, and recoil velocity of each remnant were determined quasi-locally from apparent horizon data ...
D. Iozzo, N. Khera, L. Stein, Keefe Mitman, M. Boyle, Nils Deppe, F. Hébert, Lawrence E. Kidder, Jordan Moxon, H. Pfeiffer, M. Scheel, S. Teukolsky, William Throwe   +12 more
semanticscholar   +1 more source

A higher-multipole gravitational waveform model for an eccentric binary black holes based on the effective-one-body-numerical-relativity formalism [PDF]

Classical and quantum gravity, 2021
We have previously constructed a waveform model, SEOBNRE , for spinning binary black hole (BBH) moving along eccentric orbit based on effective-one-body (EOB) formalism.
Xiaolin Liu, Zhoujian Cao, Zong-hong Zhu
semanticscholar   +1 more source

Status of NINJA: the Numerical INJection Analysis project [PDF]

, 2009
The 2008 NRDA conference introduced the Numerical INJection Analysis project (NINJA), a new collaborative effort between the numerical relativity community and the data analysis community.
Aylott, B., Baker, J., Boggs, W., Boyle, M., Brady, P., Brown, D., Brügmann, B., Buchman, L., Buonanno, A., Cadonati, L., Camp, J., Campanelli, M., Centrella, J., Chatterjis, S., Christensen, N., Chu, T., Diener, P., Dorband, N., Etienne, Z., Faber, J., Fairhurst, S., Farr, B., Fischetti, S., Goggin, L., Guidi, G., Hannam, M., Herrmann, F., Hinder, I., Husa, S., Kalogera, V., Kelly, B., Keppel, D., Kidder, L., Krishnan, B., Laguna, P., Liu, Y., Lousto, C., Mandel, I., Marronetti, P., Matthews, K., Matzner, R., McWilliams, S., Mercer, R., Mohapatra, S., Mroué, A., Nakano, H., Ochsner, E., Pan, Y., Pekowsky, L., Pfeiffer, H., Pollney, D., Pretorius, F., Raymond, V., Reisswig, C., Rezzolla, L., Rinne, O., Robinson, C., Röver, C., Santamaria, L., Sathyaprakash, B., Scheel, M., Schnetter, E., Seiler, J., Shapiro, S., Shoemaker, D., Sperhake, U., Stroeer, A., Sturani, R., Tichy, W., van der Sluys, M., van Meter, J., Vaulin, R., Vecchio, A., Veitch, J., Viceré, A., Whelan, J., Zlochower, Y.   +76 more
core   +2 more sources