Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Aranha, R. F."'
Autor:
Aranha, R. F., de Oliveira, H. P.
The two most common initial data for vacuum axisymmetric spacetimes are the Brill and Teukolsky gravitational waves. The subsequent numerical evolution of these data exhibits distinct properties mainly associated with the critical gravitational colla
Externí odkaz:
http://arxiv.org/abs/2409.04281
In this article we present a numerical code, based on the collocation or pseudospectal method, which integrates the equations of the BSSN formalism in cylindrical coordinates. In order to validate the code, we carried out a series of tests, using thr
Externí odkaz:
http://arxiv.org/abs/2409.01527
Publikováno v:
Phys. Rev. D 104, 084065 (2021)
Here we report a developed high performance and simplified version of the code denominated RIO, which can be easily extended, for the generalized BSSN formulation. We implement a code which is regular at the center of symmetry, without use a special
Externí odkaz:
http://arxiv.org/abs/2105.09094
Publikováno v:
Classical and Quantum Gravity 38, 225004 (2021)
We follow the strategy initiated in Ref. [1] and proceed with the implementation of the Galerkin-Collocation domain decomposition (GCDD) applied to the dynamics of a spherical self-gravitating scalar field with the field equation in the Cauchy formul
Externí odkaz:
http://arxiv.org/abs/2012.01302
We examine the gravitational wave recoil waves and the associated net kick velocities in non-axisymmetric Robinson-Trautman spacetimes. We use characteristic initial data for the dynamics corresponding to non-head-on collisions of black holes. We mak
Externí odkaz:
http://arxiv.org/abs/1407.4405
We examine numerically the gravitational wave recoil in non-axisymmetric Robinson-Trautman spacetimes. We construct characteristic initial data for the Robinson-Trautman dynamics which are interpreted as corresponding to the early post-merger state o
Externí odkaz:
http://arxiv.org/abs/1403.4581
We examine numerically the process of gravitational wave recoil in the merger of two black holes in non head-on collision, in the realm of Robinson-Trautman spacetimes. Characteristic initial data for the system are constructed, and the evolution cov
Externí odkaz:
http://arxiv.org/abs/1202.1271
Publikováno v:
Phys. Rev. D 85, 024003 (2012)
We examine numerically the post-merger regime of two Schwarzschild black holes in non head-on collision. Our treatment is made in the realm of non-axisymmetric Robinson-Trautman spacetimes which are appropriate for the description of the system. Char
Externí odkaz:
http://arxiv.org/abs/1111.1223
Publikováno v:
Int.J.Mod.Phys.D17:2049-2064,2008
We examine the efficiency of gravitational bremsstrahlung production in the process of head-on collision of two boosted Schwarzschild black holes. We constructed initial data for the characteristic initial value problem in Robinson-Trautman spacetime
Externí odkaz:
http://arxiv.org/abs/0804.3610
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