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arXiv:0705.4108 (astro-ph)
[Submitted on 28 May 2007]

Title:Astronomical bounds on future big freeze singularity

Authors:Artyom V. Yurov, Artyom V. Astashenok, Pedro F. Gonzalez-Diaz
View a PDF of the paper titled Astronomical bounds on future big freeze singularity, by Artyom V. Yurov and 2 other authors
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Abstract: Recently it was found that dark energy in the form of phantom generalized Chaplygin gas may lead to a new form of the cosmic doomsday, the big freeze singularity. Like the big rip singularity, the big freeze singularity would also take place at a finite future cosmic time, but unlike the big rip singularity it happens for a finite scale this http URL goal is to test if a universe filled with phantom generalized Chaplygin gas can conform to the data of astronomical observations. We shall see that if the universe is only filled with generalized phantom Chaplygin gas with equation of state $p=-c^2s^2/\rho^{\alpha}$ with $\alpha<-1$, then such a model cannot be matched to the data of astronomical observations. To construct matched models one actually need to add dark matter. This procedure results in cosmological scenarios which do not contradict the data of astronomical observations and allows one to estimate how long we are now from the future big freeze doomsday.
Comments: 8 pages
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:0705.4108 [astro-ph]
  (or arXiv:0705.4108v1 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0705.4108
arXiv-issued DOI via DataCite
Journal reference: Grav.Cosmol.14:205-212,2008
Related DOI: https://doi.org/10.1134/S0202289308030018
DOI(s) linking to related resources

Submission history

From: Artyom Yurov [view email]
[v1] Mon, 28 May 2007 20:35:22 UTC (8 KB)
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