70 citations · 194 across the 28 of their papers we have counts for
9 papers · 1 filter
Study of null geodesic in an axially symmetric space
Jonathan Pineda, Leonardo Castañeda, Juan Manuel Tejeiro
Since the development of Relativity theory, a variety of solutions have been found around Einstein field equations, depending on the time-space. For instance, we can find the axial…
Cosmological parameter estimation from weak lensing. The case of ,
Leonardo Castañeda
Propagation of light in the universe with structure which amplify and modify the shape of distant galaxies, producing a correlation between nearby and distant density of galaxies,…
Cosmological simulations: a tool for understanding the formation of large scale structure and connection with the Newtonian cosmology
J. E. García Farieta, L. Castañeda, J. M. Tejeiro
In this work we study the cosmological simulations as a tool to understand the formation of large-scale structure of the universe, for this, we show the equivalence of Newtonian co…
Cosmological implications of gravitational collapse in F(R) theories
César Peralta, Leonardo Castañeda
We will make a comparison between the dynamics of spherical gravitational collapse for a perturbed FLRW universe to first order in the context of general relativity, with the corre…
Effects of primordial magnetic fields on CMB
Hector J. Hortua, Leonardo Castañeda
The origin of large-scale magnetic fields is an unsolved problem in cosmology. In order to overcome, a possible scenario comes from the idea that these fields emerged from a small…
Equivalence between formulations in Cosmological Perturbation Theory: The primordial magnetic fields as an example
Hector J. Hortua, Leonardo Castañeda
Nowdays, Cosmological Perturbation Theory is a standard and useful tool in theoretical cosmology. In this work, we compare the 1+3 covariant formalism in perturbation theory (Ellis…