Confrontation of Antimatter Cosmologies with Observational Data
نویسندگان
چکیده
منابع مشابه
Modern Cosmological Models with Dark Matter and Their Confrontation with Observational Data
New systematic classification of cosmological models of the present Universe is introduced. After making the comparison of these models with all existing observational data three viable models remain: the cold dark matter model with the cosmological constant (which becomes the most reasonable one if the Hubble constant H0 > 60 km/s/Mpc); the mixed cold-hot dark matter model (models with two and...
متن کاملObservational constraints on phantom-like braneworld cosmologies
We investigate a simple braneworld model in which the universe contains only cold dark matter and a cosmological constant, but the effective dark energy is phantom-like because of extra-dimensional gravity effects. Modified gravity screens the cosmological constant Λ, allowing for a larger Λ. In practice, observations do not favour any significant screening. We use supernova data, the cosmic mi...
متن کاملConfrontation of MOND Predictions with WMAP First Year Data
I present a model devoid of non-baryonic cold dark matter (CDM) which provides an acceptable fit to the WMAP data for the power spectrum of temperature fluctuations in the cosmic background radiation (CBR). An a priori prediction of such no-CDM models was a first-to-second peak amplitude ratio A1:2 ≈ 2.4. WMAP measures A1:2 = 2.34 ± 0.09. The baryon content is the dominant factor in fixing this...
متن کاملConfrontation of Double-inflationary Models with Observations
We consider double-inflationary models with two noninteracting scalar fields, a light scalar field φl with potential 1 2m 2 l φ 2 l and a heavy scalar field φh with potential λ n φh with n = 2, 4. CDM with the initial spectrum of adiabatic perturbations produced in these models is compared with observations. These models contain two more free parameters than the standard CDM model with an initi...
متن کاملConfrontation of Iranian Contemporary Architecture with Electronic era
Technology has had many influences on the Iranian society in different eras. Today, information and telecommunication technologies have revolutionized the basic structures of society and a new network society has been propagated inside the traditional and semi-modern context. In countries like Iran, which are in the process of modernization, a chaos deriving from the transition period is obs...
متن کاملذخیره 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: 1974
ISSN: 0074-1809
DOI: 10.1017/s0074180900235699