Evolution of the cosmological horizons in a concordance universe

Bibcode
2012JCAP...12..035M
DOI
10.1088/1475-7516/2012/12/035
Cepa, Jordi; Margalef-Bentabol, Juan; Margalef-Bentabol, Berta
Bibliographical reference

Journal of Cosmology and Astroparticle Physics, Issue 12, article id. 035, pp. (2012).

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12
2012
Number of authors
3
IAC number of authors
1
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
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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
In progress
Type
Refereed
Formation & Evolution of Galaxies (FYEG)

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