Beginning from the proposal of a physically acceptable model to represent the interior of
compact stars, in which their interior is formed by a strange matter distribution described by a …

A stellar model with an electrically charged anisotropic fluid as a source of matter is
presented. The radial pressure is described by a Chaplygin state equation, P r (ρ)= μ c 2 ρ …

The astronomical observations on the accelerated expansion of the universe generate the
possibility that the internal matter of the stars is not only formed by ordinary matter but also …

The aim of the present paper is to find an exact anisotropic and charged version of the well-
known Heintzmann interior solution [Z. Phys. 228 (1969) 489] in a space-time via the …

A simple geometry which is static and spherically symmetrical is proposed, useful to model a
fluid sphere in general relativity. This allows us to describe the interior of stellar objects both …

In the description of neutron stars, it is very important to consider gravitational theories as
general relativity, due to the determining influence on the behavior of the different types of …

In this investigation report, we present a perfect charged fluid solution for a static and
spherically symmetric spacetime; for its construction, we suppose a metric potential, gtt, and …

A static anisotropic relativistic fluid sphere model with regular geometry and finite hydrostatic
functions is presented. In the interior of the sphere, the density, radial pressure and …

Starting from the known condition of Karmarkar, which guarantees that a static and
spherically symmetrical space-time is embedded in a manifold of dimension 5, and that it …

In this report, we present an interior solution to Einstein's equations in a spherically
symmetric and static spacetime filled by two sources with anisotropic pressures, one of these …