Results 31 to 40 of about 536,719 (375)

FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: COSMOLOGICAL INTERPRETATION [PDF]

open access: yes, 2008
The Wilkinson Microwave Anisotropy Probe (WMAP) 5-year data provide stringent limits on deviations from the minimal, six-parameter Λ cold dark matter model. We report these limits and use them to constrain the physics of cosmic inflation via Gaussianity,
E. Komatsu   +19 more
semanticscholar   +1 more source

The Atacama Cosmology Telescope: DR4 maps and cosmological parameters [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2020
We present new arcminute-resolution maps of the Cosmic Microwave Background temperature and polarization anisotropy from the Atacama Cosmology Telescope, using data taken from 2013–2016 at 98 and 150 GHz. The maps cover more than 17,000 deg2, the deepest
S. Aiola   +139 more
semanticscholar   +1 more source

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample [PDF]

open access: yes, 2016
We present cosmological results from the final galaxy clustering data set of the Baryon Oscillation Spectroscopic Survey, part of the Sloan Digital Sky Survey III.
S. Alam   +88 more
semanticscholar   +1 more source

QUANTUM COSMOLOGY [PDF]

open access: yesAnnals of the New York Academy of Sciences, 1993
10 pages, TUTP-92 ...
openaire   +3 more sources

Cosmological billiards [PDF]

open access: yesClassical and Quantum Gravity, 2003
It is shown in detail that the dynamics of the Einstein-dilaton-p-form system in the vicinity of a spacelike singularity can be asymptotically described, at a generic spatial point, as a billiard motion in a region of Lobachevskii space (realized as an hyperboloid in the space of logarithmic scale factors). This is done within the Hamiltonian formalism,
Damour, T., Henneaux, M., Nicolai, H.
openaire   +3 more sources

Cosmological parameters from SDSS and WMAP [PDF]

open access: yes, 2003
We measure cosmological parameters using the three-dimensional power spectrum P(k) from over 200,000 galaxies in the Sloan Digital Sky Survey (SDSS) in combination with WMAP and other data.
Max Tegmark   +37 more
semanticscholar   +1 more source

DESI 2024 VI: cosmological constraints from the measurements of baryon acoustic oscillations [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics
We present cosmological results from the measurement of baryon acoustic oscillations (BAO) in galaxy, quasar and Lyman-α forest tracers from the first year of observations from the Dark Energy Spectroscopic Instrument (DESI), to be released in the DESI ...
A. G. Adame   +200 more
semanticscholar   +1 more source

The Cosmological Constant and Dark Energy [PDF]

open access: yes, 2002
Physics invites the idea that space contains energy whose gravitational effect approximates that of Einstein's cosmological constant, Lambda: nowadays the concept is termed dark energy or quintessence.
P. Peebles, Bharat Ratra
semanticscholar   +1 more source

The Cosmological Constant [PDF]

open access: yesLiving Reviews in Relativity, 2000
This is a review of the physics and cosmology of the cosmological constant. Focusing on recent developments, I present a pedagogical overview of cosmology in the presence of a cosmological constant, observational constraints on its magnitude, and the ...
Sean M. Carroll
semanticscholar   +1 more source

Cosmological parameters from CMB and other data: A Monte Carlo approach [PDF]

open access: yes, 2002
We present a fast Markov chain Monte Carlo exploration of cosmological parameter space. We perform a joint analysis of results from recent cosmic microwave background ~CMB!
A. Lewis, S. Bridle
semanticscholar   +1 more source

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