Relativistic hydrodynamic evolutions with black hole excision

@article{Duez2004RelativisticHE,
  title={Relativistic hydrodynamic evolutions with black hole excision},
  author={Matthew D Duez and Stuart L. Shapiro and Hwei-jang Yo},
  journal={Physical Review D},
  year={2004},
  volume={69},
  pages={104016}
}
We present a numerical code designed to study astrophysical phenomena involving dynamical spacetimes containing black holes in the presence of relativistic hydrodynamic matter. We present evolutions of the collapse of a fluid star from the onset of collapse to the settling of the resulting black hole to a final stationary state. In order to evolve stably after the black hole forms, we excise a region inside the hole before a singularity is encountered. This excision region is introduced after… 

3-D collapse of rotating stars to Kerr black holes

We study gravitational collapse of uniformly rotating neutron stars to Kerr black holes, using a new three-dimensional, fully general relativistic hydrodynamics code, which uses high-resolution

Three-dimensional relativistic simulations of rotating neutron-star collapse to a Kerr black hole

We present a new three-dimensional fully general-relativistic hydrodynamics code using high-resolution shock-capturing techniques and a conformal traceless formulation of the Einstein equations.

Collapse and black hole formation in magnetized, differentially rotating neutron stars

The capacity to model magnetohydrodynamical (MHD) flows in dynamical, strongly curved spacetimes significantly extends the reach of numerical relativity in addressing many problems at the forefront

Black Hole Formation and Growth: Simulations in General Relativity

Black holes are popping up all over the place: in compact binary X-ray sources and GRBs, in quasars, AGNs and the cores of all bulge galaxies, in binary black holes and binary black hole-neutron

Black-hole binaries, gravitational waves, and numerical relativity

Understanding the predictions of general relativity for the dynamical interactions of two black holes has been a long-standing unsolved problem in theoretical physics. Black-hole mergers are

Fully General Relativistic Simulations of Black Hole-Neutron Star Mergers

Black hole-neutron star (BHNS) binaries are expected to be among the leading sources of gravitational waves observable by ground-based detectors, and may be the progenitors of short-hard gamma-ray

Relativistic Radiation Magnetohydrodynamics in Dynamical Spacetimes: Numerical Methods and Tests

Many systems of current interest in relativistic astrophysics require a knowledge of radiative transfer in a magnetized gas flowing in a strongly curved, dynamical spacetime. Such systems include

The Collapse of Differentially Rotating Supermassive Stars: Conformally Flat Simulations

We investigate the gravitational collapse of rapidly rotating relativistic supermassive stars by means of 3 + 1 hydrodynamic simulations in conformally flat spacetime of general relativity. We study

Nonaxisymmetric instability and fragmentation of general relativistic quasitoroidal stars

In a recent publication, we have demonstrated that differentially rotating stars admit new channels of black hole formation via fragmentation instabilities. Since a higher order instability of this
...

References

SHOWING 1-10 OF 151 REFERENCES

Black Hole Emergence in Supernovae

If a black hole formed in a core-collapse supernova is accreting material from the base of the envelope, the accretion luminosity could be observable in the supernova light curve. Here we continue

Mass Limits For Black Hole Formation

We present a series of two-dimensional core-collapse supernova simulations for a range of progenitor masses and different input physics. These models predict a range of supernova energies and compact

Evolution of Rotating Supermassive Stars to the Onset of Collapse

We launch a fully relativistic study of the formation of supermassive black holes via the collapse of supermassive stars. Here we initiate our investigation by analyzing the secular evolution of

Relativistic hydrodynamics around black holes and horizon adapted coordinate systems

Despite the fact that the Schwarzschild and Kerr solutions for the Einstein equations, when written in standard Schwarzschild and Boyer-Lindquist coordinates, present coordinate singularities, all

Axisymmetric Simulations of Rotating Stellar Collapse in Full General Relativity: Criteria for Prompt Collapse to Black Holes

Motivated by a recent paper by the Potsdam numerical relativity group, we have constructed a new numerical code for hydrodynamic simulation of axisymmetric systems in full general relativity. In this

Collapse to black holes in Brans-Dicke theory. I. Horizon boundary conditions for dynamical spacetimes.

TLDR
A new numerical code is presented that evolves a spherically symmetric configuration of collisionless matter in the Brans-Dicke theory of gravitation, capable of accurately tracking collapse to a black hole in a dynamical spacetime arbitrarily far into the future, without encountering either coordinate pathologies or spacetime singularities.

Quasi-periodic accretion and gravitational waves from oscillating 'toroidal neutron stars' around a Schwarzschild black hole

We present general relativistic hydrodynamics simulations of constant specific angular momentum tori orbiting a Schwarzschild black hole. These tori are expected to form as a result of stellar

Horizon boundary condition for black hole spacetimes.

TLDR
The details of the implementation of a horizon boundary condition scheme based on using a horizon locking coordinate which locks the coordinate system to the geometry, and a finite differencing scheme which respects the causal structure of the spacetime are reported.

Moving black holes in 3D

We model a radiating, moving black hole in terms of a worldtube-nullcone boundary value problem. We evolve this data in the region interior to the worldtube but exterior to a trapped surface by means
...