4 papers
Lagrangian theory of structure formation in relativistic cosmology. VI. Comparison with Szekeres exact solutions
Ismael Delgado Gaspar, Thomas Buchert
We examine the relation between the Szekeres models and relativistic Lagrangian perturbation schemes, in particular the Relativistic Zel'dovich Approximation (RZA). We show that th…
Non-comoving baryons and cold dark matter in cosmic voids
Ismael Delgado Gaspar, Juan Carlos Hidalgo, Roberto A. Sussman
We examine the fully relativistic evolution of cosmic voids constituted by baryons and cold dark matter (CDM), represented by two non-comoving dust sources in a CDM background.…
Black hole formation from the gravitational collapse of a non-spherical network of structures
Ismael Delgado Gaspar, Juan Carlos Hidalgo, Roberto A. Sussman +1
We examine the gravitational collapse and black hole formation of multiple non--spherical configurations constructed from Szekeres dust models with positive spatial curvature that…
Gravity induced evolution of a magnetized fermion gas with finite temperature
I. Delgado Gaspar, A. Perez Martinez, Roberto A. Sussman +1
We examine the near collapse dynamics of a self-gravitating magnetized electron gas at finite temperature, taken as the source of a Bianchi-I spacetime described by the Kasner metr…