Results 161 to 170 of about 256,877 (297)
Does the Correlation between 2MRS Galaxies and the CMB Indicate an Unmodeled CMB Foreground?
The Astrophysical JournalWe revisit the claimed detection of a new cosmic microwave background (CMB) foreground based on the correlation between low-redshift Two Micron All Sky Survey Redshift Survey (2MRS) galaxies and CMB temperature maps from the Planck and Wilkinson ...
Graeme E. Addison
doaj +1 more source
A Cosmic String Specific Signature on the Cosmic Microwave Background
, 1993 Using an analytical model for the string network we show that the kurtosis of cosmic microwave background (CMB) temperature gradient maps is a good statistic to distinguish between the cosmic string model and inflationary models of structure formation ...
Brandenberger, R. +2 more
core +1 more source
Small-Scale Variations in the Cosmic Microwave Background [PDF]
, 1969 G. Daŭtcourt
openalex +1 more source
Physics of the Cosmic Microwave Background and the Planck Mission [PDF]
arXiv, 2010 This lecture is a sketch of the physics of the cosmic microwave background. The observed anisotropy can be divided into four main contributions: variations in the temperature and gravitational potential of the primordial plasma, Doppler effect from its motion, and a net red/blueshift the photons accumulate from traveling through evolving gravitational ...
arxiv
On Observing the Cosmic Microwave Background
, 1997 30 pages with 12 figures included. Uses epsf. Proceedings from the 3rd Int. School of Particle Astrophysics: "Generation of Large Scale Cosmological Structures," Erice, Sicily, Nov 3-13 ...
openaire +3 more sources
Forecast of Foreground Cleaning Strategies for AliCPT-1
The Astrophysical Journal Supplement SeriesWe report the test results of several independent foreground cleaning pipelines used in the Ali CMB Polarization Telescope experiment (AliCPT-1), a high-altitude cosmic microwave background (CMB) imager in the Northern Hemisphere with thousands of ...
Junzhou Zhang +19 more
doaj +1 more source
Microwave Background, Backgrounds Hierarchy - Polyphony of Universe [PDF]
arXiv, 2001 We discuss the structure, physical nature, dynamic genesis of clearly detected diffuse backgrounds (radiations) in the Universe. From the point of view of Wave Universe concept it is shown, that observed Backgrounds Hierarchy (Polyphony of Universe) is close connected and causely determined by the sound velocity Hierarchy of the physical medium, cosmic
arxiv
Coherence and Sakharov Oscillations in the Microwave Sky [PDF]
arXiv, 1996 I discuss the origin of the ``Sakharov oscillations'' (or ``secondary Doppler peaks'') in standard angular power spectra of the Cosmic Microwave Background anisotropies calculated for inflationary models. I contrast this with the production of CMB anisotropies in `active' models and argue that the presence or absence of Sakharov oscillations will ...
arxiv
Looking for Cosmic Neutrino Background
Frontiers in Physics, 2014 Since the discovery of neutrino oscillation in atmospheric neutrinos by the Super-Kamiokande experiment in 1998, study of neutrinos has been one of exciting fields in high-energy physics. All the mixing angles were measured. Quests for 1) measurements of
Chiaki eYanagisawa, Chiaki eYanagisawa
doaj +1 more source
Non Thermal Features in the Cosmic Neutrino Background [PDF]
arXiv, 2006 I review some of the basic information on the Cosmic Neutrino Background momentum distribution. In particular, I discuss how present data from several cosmological observables such as Big Bang Nucleosynthesis, Cosmic Microwave Background and Large Scale Structure power spectrum constrain possible deviations from a standard Fermi-Dirac thermal ...
arxiv