Results 141 to 150 of about 257,498 (300)

The Second Measurement of Anisotropy in the Cosmic Microwave Background Radiation at 0[fdg]5 Scales near the Star μ Pegasi [PDF]

open access: bronze, 1996
M. A. Lim   +13 more
openalex   +1 more source

Polarization Dependence of Emissivity [PDF]

open access: yesarXiv, 2000
We deduce the emissivity of radiation from a metallic surface as a function of angle and polarization. This effect has found application in the calibration of detectors for cosmic microwave background radiation.
arxiv  

The Simons Observatory: Design, Integration, and Testing of the Small Aperture Telescopes

open access: yesThe Astrophysical Journal Supplement Series
The Simons Observatory (SO) is a cosmic microwave background survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5200 m in the Atacama Desert in Chile.
Nicholas Galitzki   +81 more
doaj   +1 more source

Special Issue on Modified Gravity Approaches to the Tensions of ΛCDM: Goals and Highlights

open access: yesUniverse
The standard cosmological model, known as ΛCDM, has been remarkably successful in providing a coherent and predictive framework for understanding the Universe’s evolution, its large-scale structure, and cosmic microwave background (CMB) radiation [...]
Eleonora Di Valentino   +2 more
doaj   +1 more source

Cosmic Background Radiation Polarization Experiments [PDF]

open access: yesarXiv, 1999
A handful of new experiments aimed at measuring the as-yet-undetected polarization of the cosmic background radiation are described, with somewhat more detail given for three experiments with which the authors are are associated.
arxiv  

Measurement and Modeling of Polarized Atmosphere at the South Pole with SPT-3G

open access: yesThe Astrophysical Journal
We present the detection and characterization of fluctuations in linearly polarized emission from the atmosphere above the South Pole. These measurements make use of data from the SPT-3G receiver on the South Pole Telescope in three frequency bands ...
A. Coerver   +104 more
doaj   +1 more source

UEG Week 2024 Poster Presentations

open access: yes
United European Gastroenterology Journal, Volume 12, Issue S8, Page 665-1360, October 2024.
wiley   +1 more source

Primordial Nucleosynthesis: Constraints on the Birth of the Universe

open access: yesEPJ Web of Conferences, 2018
We review the basic elements of big bang nucleosythesis (BBN) and how a comparison of predicted light-element abundances with observations constrains physics of the radiation-dominated epoch.
Mathews Grant   +4 more
doaj   +1 more source

Recent results from the cosmic microwave background radiation [PDF]

open access: hybrid, 2001
K. Ganga   +32 more
openalex   +1 more source

Can Chameleon Fields Be the Source of the Dark Energy Dipole and the Cosmic Microwave Background Dipole?

open access: yesThe Astrophysical Journal
Recent research reveals that the Local Group is in motion toward ( l , b ) = (276, 30) relative to the cosmic background radiation, manifesting a velocity of 600 km s ^−1 , a phenomenon recognized as the cosmic background radiation dipole or cosmic ...
Muhammad Yarahmadi, Amin Salehi
doaj   +1 more source

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