38 citations · 184 across the 19 of their papers we have counts for
8 papers · 1 filter
Solving Tolman-Oppenheimer-Volkoff equations in f(T) gravity: a novel approach applied to some realistic equations of state
José C. N. de Araujo, Hemily G. M. Fortes
There are many ways to probe alternative theories of gravity, namely, via: experimental tests at solar system scale, cosmological data and models, gravitational waves and compact o…
Solving Tolman-Oppenheimer-Volkoff equations in gravity: a novel approach
H. G. M. Fortes, J. C. N. de Araujo
The torsion models have stood out among the proposals for an alternative description of gravity. The simplest of them, the Teleparallel theory, is equivalent to General Relativity…
Primordial gravitational waves in Horndeski gravity
Rafael C. Nunes, Marcio E. S. Alves, Jose C. N. de Araujo
We investigate the propagation of primordial gravitational waves within the context of the Horndeski theories, for this, we present a generalized transfer function quantifying the…
Gravitational radiation by point particle eccentric binary systems in the linearised characteristic formulation of general relativity
C. E. Cedeño M., J. C. N. de Araujo
We study a binary system composed of point particles of unequal masses in eccentric orbits in the linear regime of the characteristic formulation of general relativity, generalisin…
Hydrodynamical Collapse of Neutron Stars due to Hadron-Quark Phase Transition
G. F. Marranghello, J. C. N. de Araujo, O. D. Miranda
We present studies of the collapse of neutron stars that undergo a hadron-quark phase transition. A spherical Lagrangian hydrodynamic code has been written. As initial condition we…
Gravitational wave background from neutron star phase transition
J. C. N. de Araujo, G. F. Marranghello
We study the generation of a stochastic gravitational wave (GW) background produced by a population of neutron stars (NSs) which go over a hadron-quark phase transition in its inne…
A solution for galactic disks with Yukawian gravitational potential
J. C. N. de Araujo, O. D. Miranda
We present a new solution for the rotation curves of galactic disks with gravitational potential of the Yukawa type. We follow the technique employed by Toomre in 1963 in the study…
Wave polarizations for a beam-like gravitational wave in quadratic curvature gravity
E. C. de Rey Neto, J. C. N. de Araujo, O. D. Aguiar
We compute analytically the tidal field and polarizations of an exact gravitational wave generated by a cylindrical beam of null matter of finite width and length in quadratic curv…