10 citations · 35 across the 7 of their papers we have counts for
4 papers · 1 filter
Formation and Evolution of Wakes in the Spacetime Generated by a Cosmic String in Theory of Gravity
G. C. Carvalho, M. E. X. Guimarães, P. O. Mesquita +1
The formation and evolution of cosmic string wakes in the framework of a theory of gravity are investigated in this work. We consider a simple model in which baryonic matter…
Cosmic String Solution in a Born-Infeld Type Theory of Gravity
W. J. da Rocha, A. L. Naves de Oliveira, M. E. X. Guimaraes
In this work we derive an exact solution for the exterior metric of a local cosmic string in an effective theory of gravity, the so-called NDL theory, which is inspired in the Born…
Contributions from Dilatonic Strings to the Flat Behaviour of the Rotational Curves in Galaxies
M. Leineker Costa, A. L. Naves de Oliveira, M. E. X. Guimaraes
We analyse the flat behaviour of the rotational curves in some galaxies in the framework of a dilatonic, current-carrying string. We determine the expression of the tangential velo…
Dilatonic current-carrying cosmic strings
Patrick Peter, M. E. X. Guimaraes, V. C. de Andrade
We investigate the nature of ordinary cosmic vortices in some scalar-tensor extensions of gravity. We find solutions for which the dilaton field condenses inside the vortex core. T…