Astronomical bounds on future big freeze singularity

Details Astronomical bounds on future big freeze singularity Astronomical bounds on future big freeze singularity

2007-05-28

arxiv.org/abs/0705.4108v1

Grav.Cosmol.14:205-212,2008

Astronomy and Astrophysics

Astrophysics

8 pages

Scientific paper

10.1134/S0202289308030018

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 factor.Our 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.

Affiliated with

Also associated with

No associations

Rating

Astronomical bounds on future big freeze singularity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Astronomical bounds on future big freeze singularity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Astronomical bounds on future big freeze singularity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-498816