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相关论文: Lensing Induced Cluster Signatures in Cosmic Micro…

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We discuss the future detectability of gravitational-wave induced lensing from high-sensitivity cosmic microwave background (CMB) experiments. Gravitational waves can induce a rotational component of the weak-lensing deflection angle,…

宇宙学与河外天体物理 · 物理学 2015-03-11 Toshiya Namikawa , Daisuke Yamauchi , Atsushi Taruya

We analyse the feasibility of detecting the polarization of the CMB caused by scattering of the remote temperature quadrupole by galaxy clusters with forthcoming CMB polarization surveys. For low-redshift clusters, the signal is strongly…

宇宙学与河外天体物理 · 物理学 2014-09-24 Alex Hall , Anthony Challinor

The Sunyaev-Zel'dovich (SZ) effect from clusters of galaxies should yield a significant signal in cosmic microwave background(CMB) experiments at small angular scales ($\ell \ga 1000$). Experiments with sufficient frequency coverage should…

天体物理学 · 物理学 2007-05-23 Gilbert P. Holder , John E. Carlstrom

See comments. We calculate analytically an effect of the thermal Comptonization on the cosmic microwave background (CMB) photons when they propagate through galaxy clusters. We estimate a deformation of the CMB spectrum due to multiple…

宇宙学与河外天体物理 · 物理学 2019-11-26 Lev Titarchuk , Galina Lipunova

Gravitational lensing of the cosmic microwave background (CMB), a long-standing prediction of the standard cosmolgical model, is ultimately expected to be an important source of cosmological information, but first detection has not been…

天体物理学 · 物理学 2008-12-18 Kendrick M. Smith , Oliver Zahn , Olivier Dore

While the cosmic microwave background (CMB) dipole is largely assumed entirely kinematic, there appears evidence that a part of it is primordial. Such possibility arises in models implying a tilt, interpreted as a dark flow, across the…

宇宙学与河外天体物理 · 物理学 2022-06-29 A. Kashlinsky , F. Atrio-Barandela

The cosmic microwave background (CMB) is gravitationally lensed by large-scale structure, which distorts observations of the primordial anisotropies in any given direction. Averaged over the sky, this important effect is routinely modelled…

宇宙学与河外天体物理 · 物理学 2021-03-17 G. Fabbian , J. Carron , A. Lewis , M. Lembo

We present the results of analysis of constraints on cosmological parameters from cosmic microwave background (CMB) alone and in combination with galaxy cluster baryon fraction assuming inflation--generated adiabatic scalar fluctuations.…

天体物理学 · 物理学 2009-11-06 M. Douspis , A. Blanchard , R. Sadat , J. G. Bartlett , M. Le Dour

The most promising avenue for detecting primordial gravitational waves from cosmic inflation is through measurements of degree-scale CMB $B$-mode polarisation. This approach must face the challenge posed by gravitational lensing of the CMB,…

宇宙学与河外天体物理 · 物理学 2022-07-20 Antón Baleato Lizancos , Anthony Challinor , Blake D. Sherwin , Toshiya Namikawa

Cosmic Microwave Background (CMB) lensing is a powerful probe of the matter distribution in the Universe. The standard quadratic estimator, which is typically used to measure the lensing signal, is known to be suboptimal for low-noise…

宇宙学与河外天体物理 · 物理学 2019-04-26 Benjamin Horowitz , Simone Ferraro , Blake D. Sherwin

Cross-correlating the lensing signals of galaxies and comic microwave background (CMB) fluctuations is expected to provide valuable cosmological information. In particular it may help tighten constraints on parameters describing the…

宇宙学与河外天体物理 · 物理学 2017-09-14 Philipp M. Merkel , Bjoern Malte Schaefer

We discuss combining gravitational lensing of galaxies and the cosmic microwave background (CMB) by clusters to measure cosmographic distance ratios, and hence dark energy parameters. Advantages to using the CMB as the second source plane,…

天体物理学 · 物理学 2008-11-26 Wayne Hu , Daniel E. Holz , Chris Vale

Future observations of CMB anisotropies will be able to probe high multipole regions of the angular power spectrum, corresponding to a resolution of a few arcminutes. Dust emission from merging haloes is one of the foregrounds that will…

天体物理学 · 物理学 2010-11-11 Mattia Righi , Carlos Hernandez-Monteagudo , Rashid Sunyaev

The aberration and Doppler coupling effects of the Cosmic Microwave Background (CMB) were recently measured by the Planck satellite. The most straightforward interpretation leads to a direct detection of our peculiar velocity $\beta$,…

宇宙学与河外天体物理 · 物理学 2016-06-14 Omar Roldan , Alessio Notari , Miguel Quartin

In this paper we study the possibility of detecting lensing signals in high-resolution and high-sensitivity CMB experiments. At scales below 1 arcmin, the CMB background is dominated by the Sunyaev-Zel'dovich effect in clusters and by…

天体物理学 · 物理学 2009-11-13 J. M. Diego , D. Herranz

CMB lensing is a promising, novel way to measure galaxy cluster masses that can be used, e.g., for mass calibration in galaxy cluster counts analyses. Understanding the statistics of the galaxy cluster mass observable obtained with such…

宇宙学与河外天体物理 · 物理学 2020-08-12 Íñigo Zubeldia , Anthony Challinor

The low redshift structures of the Universe act as lenses in a similar way on the Cosmic Microwave Background light and on the distant galaxies (say at redshift about unity). As a consequence, the CMB temperature distortions are expected to…

天体物理学 · 物理学 2009-10-31 L. Van Waerbeke , F. Bernardeau , K. Benabed

Scattering of the temperature anisotropy quadrupole by free electrons in galaxy clusters leads to a secondary polarization signal in the cosmic microwave background (CMB) fluctuations. At low redshifts, the temperature quadrupole contains a…

天体物理学 · 物理学 2015-06-24 Daniel Baumann , Asantha Cooray

We study the problem of searching for cosmic string signal patterns in the present high resolution and high sensitivity observations of the Cosmic Microwave Background (CMB). This article discusses a technique capable of recognizing…

宇宙学与河外天体物理 · 物理学 2014-11-20 E. Jeong , Carlo Baccigalupi , G. F. Smoot

Cosmic Microwave Background (CMB) is a powerful probe to study the early universe and various cosmological models. Weak gravitational lensing affects the CMB by changing its power spectrum, but meanwhile, it also carries information about…

宇宙学与河外天体物理 · 物理学 2021-06-09 Chandra Shekhar Saraf