Results 61 to 70 of about 3,114,017 (331)

Incorporating a Radiative Hydrodynamics Scheme in the Numerical-Relativity Code BAM

Universe, 2022
To study binary neutron star systems and to interpret observational data such as gravitational-wave and kilonova signals, one needs an accurate description of the processes that take place during the final stages of the coalescence, for example, through ...
Henrique Gieg, Federico Schianchi, Tim Dietrich, Maximiliano Ujevic   +3 more
doaj   +1 more source

Reducing reflections from mesh refinement interfaces in numerical relativity

, 2005
Full interpretation of data from gravitational wave observations will require accurate numerical simulations of source systems, particularly binary black hole mergers.
B. Schutz, G. Gonzalez, James R. van Meter, John G. Baker, T. Nakamura   +4 more
core   +1 more source

Towards numerical relativity in scalar Gauss-Bonnet gravity: 3+1 decomposition beyond the small-coupling limit [PDF]

Physical Review D, 2020
Scalar Gauss-Bonnet gravity is the only theory with quadratic curvature corrections to general relativity whose field equations are of second differential order.
Helvi Witek, L. Gualtieri, P. Pani
semanticscholar   +1 more source

Robust evolution system for Numerical Relativity [PDF]

, 1999
The paper combines theoretical and applied ideas which have been previously considered separately into a single set of evolution equations for Numerical Relativity.
A. Abrahams, A. Arbona, A. Arbona, A. Lichnerowicz, C. Bona, C. Bona, C. Bona, C. Bona, C. Bona, J. Balakrishna, J. Massó, J. Stela, J. W. York, Jr., J. W. York, Jr., J. W. York, Jr., K. C. B. New, M. Alcubierre, M. Alcubierre, M. Shibata, O. Brodbeck, P. Anninos, T. Baumgarte, W. C. Hernandez, Y. Choquet-Bruhat, Y. Choquet-Bruhat   +24 more
core   +3 more sources

Relativistic Aspects of Accreting Supermassive Black Hole Binaries in Their Natural Habitat: A Review

Galaxies, 2019
In this review a summary is given on recent theoretical work, on understanding accreting supermassive black hole binaries in the gravitational wave (GW)-driven regime. A particular focus is given to theoretical predictions of properties of disks and jets
Roman Gold
doaj   +1 more source

The 3+1 formalism in teleparallel and symmetric teleparallel gravity

European Physical Journal C: Particles and Fields, 2021
Teleparallel and symmetric teleparallel gravity offer platforms in which gravity can be formulated in interesting geometric approaches, respectively given by torsion and nonmetricity. In this vein, general relativity can be expressed in three dynamically
Salvatore Capozziello, Andrew Finch, Jackson Levi Said, Alessio Magro   +3 more
doaj   +1 more source

Approximate Black Holes for Numerical Relativity [PDF]

, 1996
Spherically symmetric solutions in Brans-Dicke theory of relativity with zero coupling constant, $\omega=0$, are derived in the Schwarzschild line-element. The solutions are obtained from a cubic transition equation with one small parameter. The exterior
van Putten, Maurice H. P. M.
core   +3 more sources

Fundamental Tone and Overtones of Quasinormal Modes in Ringdown Gravitational Waves: A Detailed Study in Black Hole Perturbation

Universe, 2021
Ringdown gravitational waves of compact object binaries observed by ground-based gravitational-wave detectors encapsulate rich information to understand remnant objects after the merger and to test general relativity in the strong field. In this work, we
Norichika Sago, Soichiro Isoyama, Hiroyuki Nakano   +2 more
doaj   +1 more source

Microscopic equation of state of hot nuclear matter for numerical relativity simulations [PDF]

Astronomy & Astrophysics, 2020
Context. A precise understanding of the equation of state (EOS) of dense and hot matter is key to modeling relativistic astrophysical environments, including core-collapse supernovae (CCSNe), protoneutron star (PNSs) evolution, and compact binary mergers.
D. Logoteta, A. Perego, I. Bombaci
semanticscholar   +1 more source

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

Population Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source