A Combined Cosmological Test

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Cosmological Test for General Relativity

The latest results in cosmography as well as the latest observations of the cosmic microwave background (CMB) and of supernovae have reinforced the emergence of a canonical paradigm for cosmology. Most of the cosmological parameters constituting this concordance model are now known up to five per cent of relative accuracy. We can rely on these accurate values of the parameters if the fundamenta...

متن کامل

00 2 Cosmological Constraints from a Combined Analysis of

We present constraints on several cosmological parameters from a combined analysis of the most recent Cosmic Microwave Background anisotropy data and the Sloan Digital Sky Survey cluster mass function. We find that the combination of the two data sets breaks several degeneracies among the parameters and provides the following constraints: σ 8 = 0.76 ± 0.09, Ω m = 0.26

متن کامل

IL NUOVO CIMENTO Galaxies as a cosmological test

— The relativistic ΛCDM cosmological model has passed a demanding network of tests that convincingly demonstrate it is a useful approximation to what happened back to high redshift. But there are anomalies in its application to structure formation on the scales of galaxies that show we have much to learn about what this theory actually predicts and possibly something also of value to learn abou...

متن کامل

Cluster Morphologies as a Test of Different Cosmological Models

We investigate how cluster morphology is affected by the cosmological constant in low-density universes. Using high-resolution cosmological N-body/SPH simulations of flat (Ω0 = 0.3, λ0 = 0.7,ΛCDM) and open (Ω0 = 0.3, λ0 = 0, OCDM) cold dark matter universes, we calculate statistical indicators to quantify the irregularity of the cluster morphologies. We study axial ratios, center shifts, cluste...

متن کامل

Gravitational Lens Image Separations Versus Redshift as a Cosmological Test

It has recently been noted by Park & Gott (1997) that there is a statistically significant negative correlation between gravitational lens image separations and source redshifts. This negative correlation is puzzling since is cannot be explained with any realistic models both in flat and open cosmologies, while ususal lens statistics, such as number density and distribution of image separation,...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Symposium - International Astronomical Union

سال: 1972

ISSN: 0074-1809

DOI: 10.1017/s007418090000588x