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Blázquez Salcedo, José Luis ; González Romero, Luis Manuel ; Kunz, Jutta ; Mojica, Sindy ; Navarro Lérida, Francisco | Amer Physical Soc | 2016-01-28We investigate axial quasinormal modes of realistic neutron stars in Einstein-Gauss-Bonnet-dilaton gravity. We consider eight realistic equations of state containing nuclear, hyperonic, and hybrid matter. We focus on the fundamental curvature mo[...]texto impreso
We study the influence of core-crust transition pressure changes on the general dynamical properties of neutron star configurations. First we study the matching conditions in core-crust transition pressure region, where phase transitions in the [...]texto impreso
In this paper a new formalism based on exterior differential systems is derived for perfect-fluid spacetimes endowed with an abelian orthogonally transitive G_2 group of motions acting on spacelike surfaces. This formulation allows simplificatio[...]texto impreso
Blázquez Salcedo, José Luis ; González Romero, Luis Manuel ; Navarro Lérida, Francisco ; Tchrakian, D. H. | Amer Physical Soc | 2013-07-16We have constructed numerically non-Abelian vortices in an SU(2) Chern-Simons-Higgs theory with a quartic Higgs potential. We have analyzed these solutions in detail by means of improved numerical codes and found some unexpected features we did [...]texto impreso
Fernández Jambrina, Leonardo ; González Romero, Luis Manuel | World Scientific Publ Co Pte Ltd | 2004-03-15In this paper we analyse the possibility of constructing singularity-free inhomogeneous cosmological models with a pure radiation field as matter content. It is shown that the conditions for regularity are very easy to implement and therefore th[...]texto impreso
In this paper we analyze Abelian diagonal orthogonally transitive space–times with spacelike orbits for which the matter content is a stiff perfect fluid. The Einstein equations are cast in a suitable form for determining their geodesic complete[...]texto impreso
Blázquez Salcedo, José Luis ; González Romero, Luis Manuel ; Navarro Lérida, Francisco | Amer Physical Soc | 2013-05-31Here we investigate the axial w quasinormal modes of neutron stars for 18 realistic equations of state, most of them satisfying the 2M condition. In particular, we study the influence of the presence of hyperons and quarks in the core of the ne[...]texto impreso
Blázquez Salcedo, José Luis ; González Romero, Luis Manuel ; Navarro Lérida, F. | Amer Physical Soc | 2014-02-06In this paper, we analyze the quasinormal mode spectrum of realistic neutron stars by studying the polar modes. In particular, we calculate the fundamental mode (f mode), the fundamental pressure mode (p mode), and the fundamental curvature mode[...]texto impreso
In the framework of general relativity, a description of the matching conditions between two rotating perfect fluids spacetimes in terms of the kinematical properties of the fluids is introduced. The Einstein and Darmois equations are written us[...]texto impreso
Fernández Jambrina, Leonardo ; González Romero, Luis Manuel | American Physical Society | 2002-07-15In this paper a family of nonsingular cylindrical perfect fluid cosmologies is derived. The equation of state corresponds to a stiff fluid. The family depends on two independent functions under very simple conditions. A sufficient condition for [...]
