Microwave Background Constraints on Cosmological Parameters
نویسندگان
چکیده
منابع مشابه
Microwave Background Constraints on Cosmological Parameters
We use a high-accuracy computational code to investigate the precision with which cosmological parameters could be reconstructed by future cosmic microwave background experiments. We focus on the two planned satellite missions: MAP and Planck. We identify several parameter combinations that could be determined with a few percent accuracy with the two missions, as well as some degeneracies among...
متن کاملCosmological constraints from the cosmic microwave background
Using an approximate likelihood method adapted to band–power estimates, we analyze the ensemble of first generation cosmic microwave background anisotropy experiments to deduce constraints over a six–dimensional parameter space describing Inflation–generated adiabatic, scalar fluctuations. The basic preferences of simple Inflation scenarios are consistent with the data set: flat geometries (Ωto...
متن کاملDetermining Cosmological Parameters from the Microwave Background
Recently funded satellites will map the cosmic microwave background radiation with unprecedented sensitivities and angular resolutions. Assuming only primordial adiabatic scalar and tensor perturbations, we evaluate how accurately experiments of this type will measure the basic cosmological parameters Ω (the total density of the Universe), Ωb (the baryon density), h (the Hubble constant), and Λ...
متن کاملConstraints on cosmological parameters
A cosmological model with total density close to critical (and flat geometry), dominated by dark matter and dark energy of unknown nature, and consistent with the basic predictions of the inflationary scenario is a very good fit to a variety of cosmological probes: the anisotropy of the CMB, the large scale distribution of matter, the luminosity distance of high-redshift type Ia supernovae and ...
متن کاملCosmological constraints from Microwave Background Anisotropy and Polarization
The recent high-quality measurements of the Cosmic Microwave Background anisotropies and polarization provided by ground-based, balloon-borne and satellite experiments have presented cosmologists with the possibility of studying the large scale properties of our universe with unprecedented precision. Here I review the current status of observations and constraints on theoretical models.
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1997
ISSN: 0004-637X,1538-4357
DOI: 10.1086/304692