Statistical evaluation of the observational information on $Ω_m$ and $Ω_Λ$

Details Statistical evaluation of the observational information on $Ω_m$ and $Ω_Λ$ Statistical evaluation of the observational information on $Ω_m$ and $Ω_Λ$

2001-04-25

arxiv.org/abs/astro-ph/0104411v1

Astron.Astrophys. 373 (2001) 369

Astronomy and Astrophysics

Astrophysics

8 pages, 4 figures, accepted for publication in Astronomy & Astrophysics

Scientific paper

10.1051/0004-6361:20010627

We undertake a critical evaluation of recent observational information on $\Omega_m$ and $\Omega_\Lambda$ in order to identify possible sources of systematic errors and effects of simplified statistical analyses. We combine observations for which the results have been published in the form of likelihood contours in the $\Omega_m ,\Omega_\Lambda$ plane. We approximate the contours by fifth order polynomials, and we then use the maximum likelihood method to obtain joint likelihood contours for the combined data. In the choice of statistical merits we aim at minimum loss of information rather than at minimum variance. We find that $\Omega_0 = \Omega_m + \Omega_\Lambda = 0.99\pm 0.04 \pm 0.03$, where the first error is mainly statistical and the second error is systematical. In a flat Universe we find $\Omega_m^{flat} = 0.31 \pm 0.04 \pm 0.04$.

Affiliated with

Also associated with

No associations

Rating

Statistical evaluation of the observational information on $Ω_m$ and $Ω_Λ$ 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 Statistical evaluation of the observational information on $Ω_m$ and $Ω_Λ$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Statistical evaluation of the observational information on $Ω_m$ and $Ω_Λ$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-647722