19 citations · 33 across the 12 of their papers we have counts for
5 papers · 1 filter
Evolution of self-gravitating fluid spheres involving ghost stars
L. Herrera, A. Di Prisco, J. Ospino
Exact solutions are presented which describe, either the evolution of fluid distributions corresponding to a ghost star (vanishing total mass), or describing the evolution of fluid…
Relativisitic non-pascalian fluid as a density contribution
Justo Ospino, Daniel Suárez-Urango, Laura M. Becerra +2
Understanding the role of pressure anisotropy and dissipation is crucial for modelling compact objects' internal structure and observable properties. In this work, we reinterpret l…
Ghost stars in general relativity
L. Herrera, A. Di Prisco, J. Ospino
We explore an idea put forward many years ago by Zeldovich and Novikov concerning the existence of compact objects endowed with arbitrarily small mass. The energy-density of such o…
The post--quasi-static approximation: An analytical approach to gravitational collapse
L. Herrera, A. Di prisco, J. Ospino
A semi--numerical approach proposed many years ago for describing gravitational collapse in the post--quasi--static approximation, is modified in order to avoid the numerical integ…
Irreversibility and gravitational radiation: A proof of Bondi's conjecture
L. Herrera, A. Di Prisco, J. Ospino
It is shown that the evolution of an axially and reflection symmetric fluid distribution, satisfying the Tolman condition for thermal equilibrium, is not accompanied by the emissio…