Testing the DGP model with gravitational lensing statistics

Details Testing the DGP model with gravitational lensing statistics Testing the DGP model with gravitational lensing statistics

2008-04-17

arxiv.org/abs/0804.2917v1

Astro.Astrophys. 487 (2008) 831-835

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures, accepted for publication in A&A

Scientific paper

10.1051/0004-6361:200809386

The self-accelerating braneworld model (DGP) seems to provide a simple alternative to the the standard $\Lambda$CDM cosmology to explain the current cosmic acceleration, which is strongly indicated by measurements of Type Ia supernovae, as well as other concordant observations. In this work, we investigate observational constraints on this scenario from gravitational lensing statistics using the Cosmic Lens All-Sky Survey (CLASS) lensing sample. We show that a large parameter space of the DGP model is in good agreement with this radio source gravitational lensing sample. In the flat case, $\Omega_\mathrm{K}=0$, the likelihood is maximized, ${\cal L}={\cal L_\mathrm{max}}$, for $\1 = 0.30_{-0.11}^{+0.19}$. If we relax the prior on $\Omega_\mathrm{K}$, the likelihood peaks at $\{\1,\2 \} \simeq \{0.29, 0.12\}$, just slightly in the region of open models. However the confidence contours are pretty elongated so that we can not discard either close or flat or open models

Affiliated with

Also associated with

No associations

Rating

Testing the DGP model with gravitational lensing statistics 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 Testing the DGP model with gravitational lensing statistics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing the DGP model with gravitational lensing statistics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-303537