Results 111 to 120 of about 5,544,231 (205)

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

Sensitivity-improved Polarization Maps at 40 GHz with CLASS and WMAP Data

open access: yesThe Astrophysical Journal
Improved polarization measurements at frequencies below 70 GHz with degree-level angular resolution are crucial for advancing our understanding of the Galactic synchrotron radiation and the potential polarized anomalous microwave emission and ultimately ...
Rui Shi   +20 more
doaj   +1 more source

22. Cosmic background radiation 1 22. COSMIC BACKGROUND RADIATION

open access: yes, 2008
The observed cosmic microwave background (CMB) radiation provides strong evidence for the hot big bang. The success of primordial nucleosynthesis calculations (see Sec.

core  

Differential Polarization Calibration: A Consistency Test for Cosmic Birefringence

open access: yesThe Astrophysical Journal Letters
The cosmic microwave background (CMB) birefringence angle β is exactly degenerate with a common instrumental polarization-angle offset. The Minami–Komatsu (MK) likelihood separates these quantities using Galactic foreground polarization, so its inferred ...
Anto I. Lonappan   +2 more
doaj   +1 more source

19. Cosmic background radiation 1 19. COSMIC BACKGROUND RADIATION

open access: yes, 2008
The observed cosmic microwave background (CMB) radiation provides strong evidence for the hot big bang. The success of primordial nucleosynthesis calculations (see Sec.

core  

Cosmic Needles versus Cosmic Microwave Background Radiation

open access: yesThe Astrophysical Journal, 2003
13 pages, 4 figures; submitted to ...
openaire   +2 more sources

The cosmic microwave background radiation temperature at

open access: yes, 2002
From the analysis of the C+ fine-structure population ratio in the damped Lyα system at zabs = 3.025 toward the quasar Q0347–3819 we derive an upper bound of $14.6\pm0.2$ K on the cosmic microwave background temperature (TCMBR) regardless the presence ...
M. Dessauges-Zavadsky   +3 more
core   +1 more source

Photon Propagation as a Probe for Fundamental Physics [PDF]

open access: yes, 2009
In this thesis we show how light propagation can be used in order to constrain particle physics models beyond the Standard Model. We study in particular the effects of non standard physics on the polarization of cosmic microwave background radiation ...
Galaverni, Matteo
core  

CMBFSCNN: Cosmic Microwave Background Polarization Foreground Subtraction with a Convolutional Neural Network

open access: yesThe Astrophysical Journal Supplement Series
In our previous study, we introduced a machine learning technique, namely Cosmic Microwave Background Foreground Subtraction with Convolutional Neural Networks ( CMBFSCNN ), for the removal of foreground contamination in cosmic microwave background (CMB)
Ye-Peng Yan   +4 more
doaj   +1 more source

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