Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Dennison, Kenneth A."'
While numerous numerical relativity simulations adopt a 1+log slicing condition, shock-avoiding slicing conditions form a viable and sometimes advantageous alternative. Despite both conditions satisfying similar equations, recent numerical experiment
Externí odkaz:
http://arxiv.org/abs/2301.05874
Publikováno v:
Phys. Rev. D 106, 104059 (2022)
Motivated by recent numerical relativity simulations of charged black holes and their interactions, we explore the properties of common slicing conditions in Reissner-Nordstr\"om spacetimes. Specifically, we consider different choices for the so-call
Externí odkaz:
http://arxiv.org/abs/2207.12438
The "direct collapse" scenario has emerged as a promising evolutionary track for the formation of supermassive black holes early in the Universe. In an idealized version of such a scenario, a uniformly rotating supermassive star spinning at the mass-
Externí odkaz:
http://arxiv.org/abs/1906.04190
Publikováno v:
Phys. Rev. D 96, 124014 (2017)
Trumpet geometries play an important role in numerical simulations of black hole spacetimes, which are usually performed under the assumption of asymptotic flatness. Our Universe is not asymptotically flat, however, which has motivated numerical stud
Externí odkaz:
http://arxiv.org/abs/1710.07373
Publikováno v:
Phys. Rev. Lett. 113, 261101 (2014)
We introduce a new time-independent family of analytical coordinate systems for the Kerr spacetime representing rotating black holes. We also propose a (2+1)+1 formalism for the characterization of trumpet geometries. Applying this formalism to our n
Externí odkaz:
http://arxiv.org/abs/1409.1887
We describe a simple family of analytical coordinate systems for the Schwarzschild spacetime. The coordinates penetrate the horizon smoothly and are spatially isotropic. Spatial slices of constant coordinate time $t$ feature a trumpet geometry with a
Externí odkaz:
http://arxiv.org/abs/1403.5484
Tendex and vortex fields, defined by the eigenvectors and eigenvalues of the electric and magnetic parts of the Weyl curvature tensor, form the basis of a recently developed approach to visualizing spacetime curvature. In analogy to electric and magn
Externí odkaz:
http://arxiv.org/abs/1208.1218
Tendex and vortex fields, defined by the eigenvectors and eigenvalues of the electric and magnetic parts of the Weyl curvature tensor, form the basis of a recently developed approach to visualizing spacetime curvature. In particular, this method has
Externí odkaz:
http://arxiv.org/abs/1207.2431
Publikováno v:
Phys.Rev.D82:124057,2010
We study families of time-independent maximal and 1+log foliations of the Schwarzschild-Tangherlini spacetime, the spherically-symmetric vacuum black hole solution in D spacetime dimensions, for D >= 4. We identify special members of these families f
Externí odkaz:
http://arxiv.org/abs/1010.5723
Publikováno v:
Phys.Rev. D74 (2006) 064016
We construct approximate analytical solutions to the constraint equations of general relativity for binary black holes of arbitrary mass ratio in quasicircular orbit. We adopt the puncture method to solve the constraint equations in the transverse-tr
Externí odkaz:
http://arxiv.org/abs/gr-qc/0606037