133 citations · 711 across the 43 of their papers we have counts for
10 papers · 1 filter
Determining the neutron star equation of state using the narrow-band gravitational wave detector Schenberg
G. F. Marranghello, J. C. N. de Araujo
We briefly review the properties of quasi-normal modes of neutron stars and black holes. We analyse the consequences of a possible detection of such modes via the gravitational wav…
Gravitational wave background from Population III black hole formation
J. C. N. de Araujo, O. D. Miranda, O. D. Aguiar
We study the generation of a stochastic gravitational wave (GW) background produced from a population of core-collapse supernovae, which form black holes in scenarios of structure…
The formation of voids in a universe with cold dark matter and a cosmological constant
O. D. Miranda, J. C. N. de Araujo
A spherical Lagrangian hydrodynamical code has been written to study the formation of cosmological structures in the early Universe. In this code we take into account the presence…
Possible Strong Gravitational Wave Sources for the LISA Antenna
J. C. N. de Araujo, O. D. Miranda, O. D. Aguiar
Recently Fuller & Shi proposed that the gravitational collapse of supermassive objects () could be a cosmological source of -ray bursts (GRBs). The major…
Stochastic background of gravitational waves
J. C. N. de Araujo, O. D. Miranda, O. D. Aguiar
A continuous stochastic background of gravitational waves (GWs) for burst sources is produced if the mean time interval between the occurrence of bursts is smaller than the average…
Collapse of Primordial Clouds II. The Role of Dark Matter
S. R. Oliveira, O. D. Miranda, J. C. N. de Araujo +1
In this article we extend the study performed in our previous article on the collapse of primordial objects. We here analyze the behavior of the physical parameters for clouds rang…
Collapse of Primordial Clouds
S. R. Oliveira, O. D. Miranda, J. C. N. de Araujo +1
We present here studies of collapse of purely baryonic Population III objects with masses ranging from to . A spherical Lagrangian hydrodynamic code has be…
A Possible Dynamical Effect of a Primordial Magnetic Field
J. C. N. de Araujo, R. Opher
The possible existence of a primordial magnetic field in the universe has been previously investigated in many articles. Studies involving the influence of a magnetic field in the…
Evidence for a Very Large-Scale Fractal Structure in the Universe from Cobe Measurements
E. M. de Gouveia Dal Pino, A. Hetem, J. E. Horvath +3
In this work, we analyse the temperature fluctuations of the cosmic microwave background radiation observed by COBE and show that the distribution can be fitted by a fractal distri…
Gravitational Waves from Wobbling Pulsars
J. C. N. de Araújo, J. A. de Freitas Pacheco, J. E. Horvath +1
The prospects for detection of gravitational waves from precessing pulsars have been considered by constructing fully relativistic rotating neutron star models and evaluating the e…