33 citations · 150 across the 19 of their papers we have counts for
8 papers · 1 filter
Post-Newtonian Hamiltonian dynamics: applications to stationary spacetimes and statistical mechanics
Ronaldo S. S. Vieira, Javier Ramos-Caro, Alberto Saa
Although the post-Newtonian Lagrangian formalism is widely used in relativistic dynamical and statistical studies of test bodies moving around arbitrary mass distributions, the cor…
PPN rotation curves in static distributions with spherical symmetry
Henrique Matheus Gauy, Javier Ramos-Caro
From a Parametrized Post-Newtonian (PPN) [46-51] perspective, we address the question of whether or not the new degrees of freedom, represented by the PPN potentials, can lead to s…
Distribution functions for a family of general-relativistic Hypervirial models in collisionless regime
Henrique Matheus Gauy, Javier Ramos-Caro
By considering the Einstein-Vlasov system for static spherically symmetric distributions of matter, we show that configurations with constant anisotropy parameter have, necessa…
Vertical stability of circular orbits in relativistic razor-thin disks
Ronaldo S. S. Vieira, Javier Ramos-Caro, Alberto Saa
During the last few decades, there has been a growing interest in exact solutions of Einstein equations describing razor-thin disks. Despite the progress in the area, the analytica…
Kinetic Theory of Collisionless Self-Gravitating Gases: Post-Newtonian Polytropes
C. A. Agón, J. F. Pedraza, J. Ramos-Caro
In this paper we study the kinetic theory of many-particle astrophysical systems and we present a consistent version of the collisionless Boltzmann equation in the 1PN approximatio…
Axially Symmetric Post-Newtonian Stellar Systems
Camilo Akimushkin, Javier Ramos-Caro, Guillermo A. González
We introduce a method to obtain self-consistent, axially symmetric, thin disklike stellar models in the first post-Newtonian (1PN) approximation. The models obtained are fully anal…
Chaotic Motion Around Stellar Objects with Octupolar Deformation: Newtonian and Post Newtonian Approaches
Javier Ramos-Caro, Framsol Lopez-Suspes, Guillermo A. Gonzalez
Regular and chaotic test particle motion in gravitational fields due to stellar bodies with quadrupolar and octupolar deformation are studied using Poincare surfaces of section. In…
Fokker-Planck-Rosenbluth-Type Equations for Self-gravitating Systems in 1PN Approximation
Javier Ramos-Caro, Guillermo A. Gonzalez
We present two formulations of Fokker-Planck-Rosenbluth-type (FPR) equations for many-particle self-gravitating systems, with first order relativistic corrections in the post-Newto…