Bibcode
Cepa, Jordi; Margalef-Bentabol, Juan; Margalef-Bentabol, Berta
Bibliographical reference
Journal of Cosmology and Astroparticle Physics, Issue 12, article id. 035, pp. (2012).
Advertised on:
12
2012
Citations
9
Refereed citations
6
Description
The particle and event horizons are widely known and studied concepts,
but the study of their properties, in particular their evolution, have
only been done so far considering a single state equation in a
decelerating universe. This paper is the first of two where we study
this problem from a general point of view. Specifically, this paper is
devoted to the study of the evolution of these cosmological horizons in
an accelerated universe with two state equations, cosmological constant
and dust. We have obtained simple expressions in terms of their
respective recession velocities that generalize the previous results for
one state equation only. With the equations of state considered, it is
proved that both velocities remain always positive.
Related projects
![Composite image of the OTELO field. The red color corresponds to the integrated data from the tunable filter of OSIRIS instrument at the GTC, while the blue and green colors correspond to publicly available data from the CFHT Legacy Survey. The field is located in the well-known Groth Extended Strip, with an angular extension of about 55 sq.-arcminutes Project Image](/sites/default/files/styles/crop_square_2_2_to_320px/public/images/project/Imagen%20JCN.jpeg?h=5f2d99b5&itok=fj-pJz0z)
Evolution of Galaxies
Galaxy evolution is a crucial topic in modern extragalactic astrophysics, linking cosmology to the Local Universe. Their study requires collecting statistically significant samples of galaxies of different luminosities at different distances. It implies the ability to observe faint objects using different techniques, and at different wavelengths
Jorge
Cepa Nogue