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Exploring New Physics Frontiers Through Numerical Relativity [PDF]

open access: yesLiving Reviews in Relativity, 2015
The demand to obtain answers to highly complex problems within strong-field gravity has been met with significant progress in the numerical solution of Einstein’s equations – along with some spectacular results – in various setups.
Vitor Cardoso   +3 more
doaj   +2 more sources

Spectral Methods for Numerical Relativity [PDF]

open access: yesLiving Reviews in Relativity, 2009
Equations arising in general relativity are usually too complicated to be solved analytically and one must rely on numerical methods to solve sets of coupled partial differential equations. Among the possible choices, this paper focuses on a class called
Grandclément Philippe, Novak Jérôme
doaj   +2 more sources

Event and Apparent Horizon Finders for 3+1 Numerical Relativity [PDF]

open access: yesLiving Reviews in Relativity, 2007
Event and apparent horizons are key diagnostics for the presence and properties of black holes. In this article I review numerical algorithms and codes for finding event and apparent horizons in numerically-computed spacetimes, focusing on calculations ...
Thornburg Jonathan
doaj   +2 more sources

Introduction to Numerical Relativity

open access: yesFrontiers in Astronomy and Space Sciences, 2020
Numerical Relativity is a multidisciplinary field including relativity, magneto-hydrodynamics, astrophysics and computational methods, among others, with the aim of solving numerically highly-dynamical, strong-gravity scenarios where no other ...
Carlos Palenzuela
doaj   +1 more source

Numerical Relativity as a New Tool for Fundamental Cosmology

open access: yesPhysics, 2022
Advances in our understanding of the origin, evolution, and structure of the universe have long been driven by cosmological perturbation theory, model building, and effective field theory.
Anna Ijjas
doaj   +1 more source

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

open access: yesFrontiers 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   +3 more
doaj   +1 more source

The Lagrangian numerical relativity code SPHINCS_BSSN_v1.0

open access: yesFrontiers 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   +4 more
doaj   +1 more source

Numerical Simulations of Dark Matter Admixed Neutron Star Binaries

open access: yesParticles, 2022
Multi-messenger observations of compact binary mergers provide a new way to constrain the nature of dark matter that may accumulate in and around neutron stars.
Mattia Emma   +4 more
doaj   +1 more source

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

open access: yesUniverse, 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   +3 more
doaj   +1 more source

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

open access: yesGalaxies, 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

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