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相关论文: A Polarization Pursuers' Guide

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We predict the polarization of cosmic microwave background (CMB) photons that results from a cosmic bubble collision. The polarization is purely E-mode, symmetric around the axis pointing towards the collision bubble, and has several…

宇宙学与河外天体物理 · 物理学 2015-05-19 Bartlomiej Czech , Matthew Kleban , Klaus Larjo , Thomas S. Levi , Kris Sigurdson

The curl-modes of Cosmic Microwave Background (CMB) polarization probe horizon-scale primordial gravitational waves related to inflation. A significant source of confusion is expected from a lensing conversion of polarization related to…

天体物理学 · 物理学 2009-11-10 Asantha Cooray

The Cosmic Microwave Background (CMB) is a fundamental observational tool in modern cosmology. The linear polarization of the CMB provides a crucial observational tool for exploring new physics, including the inflationary paradigm and…

宇宙学与河外天体物理 · 物理学 2025-03-12 Vyoma Muralidhara

B-modes of Cosmic Microwave Background (CMB) polarization can be created by a primordial gravitational wave background. If this background was created by Inflation, then the amplitude of the polarization signal is proportional the energy…

天体物理学 · 物理学 2008-11-26 Alexandre Amblard , Asantha Cooray , Manoj Kaplinghat

We present a Gaussianity test of the cosmic microwave background (CMB) polarization by analyzing the statistics of unpolarized points in the sky, classified into three distinct types: saddles, comets, and beaks. This classification of…

宇宙学与河外天体物理 · 物理学 2025-12-01 K. O. Parfenov , D. I. Novikov , A. O. Mihalchenko

We review current observational constraints on the polarization of the Cosmic Microwave Background (CMB), with a particular emphasis on detecting the signature of primordial gravitational waves. We present an analytic solution to the…

天体物理学 · 物理学 2009-11-11 Brian G. Keating , Alexander G. Polnarev , Nathan J. Miller , Deepak Baskaran

We discuss upcoming opportunities with cosmic microwave background (CMB) observations during the post-WMAP era. The curl-modes of CMB polarization probe inflationary gravitational waves (IGWs). While a significant source of confusion is…

天体物理学 · 物理学 2007-05-23 Asantha Cooray

Observations of the polarization of the cosmic microwave backround (CMB) have the potential to place much tighter constraints on cosmological parameters than observations of the fluctuations in temperature alone. We discuss using CMB…

天体物理学 · 物理学 2009-10-30 William H. Kinney

Cosmic microwave background (CMB) anisotropy is our richest source of cosmological information; the standard cosmological model was largely established thanks to study of the temperature anisotropies. By the end of the decade, the Planck…

天体物理学 · 物理学 2009-11-11 James G. Bartlett

Observation of the fine structures (anisotropies, polarization, spectral distortions) of the Cosmic Microwave Background (CMB) is hampered by instabilities, 1/f noise and asymmetries of the radiometers used to carry on the measurements.…

The recently detected polarization of the cosmic microwave background (CMB) holds the potential for revealing the physics of inflation and gravitationally mapping the large-scale structure of the universe, if so called B-mode signals below…

天体物理学 · 物理学 2011-05-12 Wayne Hu , Matthew M. Hedman , Matias Zaldarriaga

The cosmic microwave background (CMB) polarization, whose experimental detection must become the next natural step in the study of the CMB radiation, depends on the dynamics of hydrogen recombination in the Universe, on the relation between…

天体物理学 · 物理学 2007-05-23 M. V. Sazhin , A. V. Toporensky

The measurement and characterization of the lensing of the cosmic microwave background (CMB) is key goal of the current and next generation of CMB experiments. We perform a case study of a three-channel balloon-borne CMB experiment…

宇宙学与河外天体物理 · 物理学 2012-12-18 Yabebal Fantaye , Carlo Baccigalupi , Samuel Leach , Amit P. S. Yadav

Thompson scattering of cosmic microwave background (CMB) photons off of free electrons during the reionization epoch induces a correlation between the distribution of galaxies and the polarization pattern of the CMB, the magnitude of which…

宇宙学与河外天体物理 · 物理学 2013-05-30 Esfandiar Alizadeh , Christopher M. Hirata

[Abridged] The polarization of the CMB is widely recognized as a potential source of information about primordial gravitational waves. The gravitational wave contribution can be separated from the dominant CMB polarization created by…

天体物理学 · 物理学 2009-11-10 Christopher M. Hirata , Abraham Loeb , Niayesh Afshordi

Forthcoming cosmic microwave background experiments (CMB) will provide precise new tests of structure-formation theories. The geometry of the Universe may be determined robustly, and the classical cosmological parameters, such as the…

天体物理学 · 物理学 2007-05-23 Marc Kamionkowski

Weak-lensing distortions of the cosmic-microwave-background (CMB) temperature and polarization patterns can reveal important clues to the intervening large-scale structure. The effect of lensing is to deflect the primary temperature and…

天体物理学 · 物理学 2009-11-10 Asantha Cooray , Marc Kamionkowski , Robert R. Caldwell

We discuss the contribution of gravitational wave to the cosmic microwave background radiation (CMBR) anisotropy and polarization. It is found that the large-scale polarization of CMBR is less than 1\% for a standard recombination universe.…

天体物理学 · 物理学 2009-10-22 Ka Lok Ng , Kin-Wang Ng

Primordial gravitational waves leave a characteristic imprint on the cosmic microwave background (CMB) in the form of $B$-mode polarization. Photons are also deflected by large scale gravitational waves which intervene between the source…

宇宙学与河外天体物理 · 物理学 2017-09-20 Connor Sheere , Alexander van Engelen , P. Daniel Meerburg , Joel Meyers

We use a simple model to investigate the effect of polarized Galactic foreground emission on the ability of planned CMB missions to detect and model CMB polarization. Emission from likely polarized sources (synchrotron and spinning dust)…

天体物理学 · 物理学 2007-05-23 A. Kogut , G. Hinshaw