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The inverse Compton scattering of the cosmic microwave background (CMB) radiation with electrons in the intracluster medium which has a temperature gradient, was examined by the third-order perturbation theory of the Compton scattering. A…

天体物理学 · 物理学 2009-11-10 Makoto Hattori , Nobuhiro Okabe

In these proceedings, we discuss the extraction, in WMAP 5 year data, of a clean CMB map, of foreground emission (dominated by emission of the interstellar medium of our galaxy), and of the tiny signal from Sunyaev Zel'dovich effect in the…

宇宙学与河外天体物理 · 物理学 2010-06-29 Jacques Delabrouille

The cosmic microwave background (CMB) is sensitive to the recent phase of accelerated cosmic expansion through the late-time integrated Sachs-Wolfe (ISW) effect, which manifests as secondary temperature fluctuations on large angular scales.…

宇宙学与河外天体物理 · 物理学 2020-03-31 Simon Foreman , P. Daniel Meerburg , Joel Meyers , Alexander van Engelen

The thermal Sunyaev-Zel'dovich effect (tSZ) is a sensitive probe of cosmology, as it traces the abundance of galaxy clusters and groups in the late-time Universe. Upcoming cosmic microwave background experiments such as the Simons…

宇宙学与河外天体物理 · 物理学 2025-06-24 Alina Sabyr , J. Colin Hill , Zoltan Haiman

We show how the correlation between the thermal Sunyaev Zel'dovich effect (tSZ) from galaxy clusters and dust emission from cosmic infrared background (CIB) sources can be calculated in a halo model framework. Using recent tSZ and CIB…

宇宙学与河外天体物理 · 物理学 2015-06-04 Graeme E. Addison , Joanna Dunkley , David N. Spergel

Accurate galaxy cluster mass measurements from the gravitational lensing of the cosmic microwave background temperature maps depend on mitigating potential biases from the cluster's own thermal Sunyaev-Zel'dovich (SZ) effect signal.…

宇宙学与河外天体物理 · 物理学 2020-02-24 Sanjaykumar Patil , Srinivasan Raghunathan , Christian L. Reichardt

Upcoming measurements of the kinetic Sunyaev-Zel'dovich (kSZ) effect, which results from Cosmic Microwave Background (CMB) photons scattering off moving electrons, offer a powerful probe of the Epoch of Reionization (EoR). The kSZ signal…

宇宙学与河外天体物理 · 物理学 2026-03-24 Farshid Farhadi Khouzani , Abinash Kumar Shaw , Paul La Plante , Bryar Mustafa Shareef , Laxmi Gewali

We discuss the real-space moments of temperature anisotropies in the cosmic microwave background (CMB) due to weak gravitational lensing by intervening large-scale structure. We show that if the probability distribution function of…

天体物理学 · 物理学 2009-11-07 Michael Kesden , Asantha Cooray , Marc Kamionkowski

The WMAP Q, V, and W band radial profiles of temperature deviation of the cosmic microwave background (CMB) were constructed for a sample of 31 randomly selected nearby clusters of galaxies in directions of Galactic latitude $|b| >$ 30$^o$.…

天体物理学 · 物理学 2008-11-26 Richard Lieu , Jonathan P. D. Mittaz , Shuang-Nan Zhang

We discuss the four-point correlation function, or the trispectrum in Fourier space, of CMB temperature and polarization anisotropies due to the weak gravitational lensing effect by intervening large scale structure. We discuss the squared…

天体物理学 · 物理学 2009-11-07 Asantha Cooray , Michael Kesden

We present Ho results from Cosmic Background Imager (CBI) observations of the Sunyaev-Zel'dovich Effect (SZE) in 7 galaxy clusters, A85, A399, A401, A478, A754, A1651, and A2597. These observations are part of a program to study a complete,…

天体物理学 · 物理学 2009-11-10 P. S. Udomprasert , B. S. Mason , A. C. S. Readhead , T. J. Pearson

The problem of detecting Sunyaev-Zel'dovich (SZ) clusters in multifrequency CMB observations is investigated using a number of filtering techniques. A multifilter approach is introduced, which optimizes the detection of SZ clusters on…

天体物理学 · 物理学 2009-11-07 D. Herranz , J. L. Sanz , M. P. Hobson , R. B. Barreiro , J. M. Diego , E. Martinez-Gonzalez , A. N. Lasenby

With the new generation of instruments for Cosmic Microwave Background (CMB) observations aiming at an accuracy level of a few percent in the measurement of the angular power spectrum of the anisotropies, the study of the contributions due…

天体物理学 · 物理学 2007-05-23 N. Aghanim , S. Prunet , 0. Forni , F. R. Bouchet

Clusters of galaxies provide valuable information on the evolution of the Universe and large scale structures. Recent cluster observations via the thermal Sunyaev-Zel'dovich (tSZ) effect have proven to be a powerful tool to detect and study…

We present the analytical formulas, derived based on the halo model, to compute the cross-correlation between the thermal Sunyaev-Zel'dovich (SZ) effect and the distribution of galaxy clusters. By binning the clusters according to their…

宇宙学与河外天体物理 · 物理学 2013-05-30 Wenjuan Fang , Kenji Kadota , Masahiro Takada

In this work, we perform a statistical inference of the classical background law governing the evolution of the temperature of the cosmic microwave background radiation (CMB), given by $T_{\rm CMB}(z) = T_0(1 + z)$. To this end, we employ…

宇宙学与河外天体物理 · 物理学 2025-06-02 Felipe Avila , Alexander Bonilla Rivera , Rafael C. Nunes , R. F. L. Holanda , Armando Bernui

Cosmological hydrodynamical simulations predict that a large fraction of all baryons reside within mildly non-linear structures with temperatures in the range $10^{5}-10^{7}$K. As the gas is highly ionized, it could be detected by the…

宇宙学与河外天体物理 · 物理学 2015-06-12 I. F. Suarez-Velásquez , J. P. Mücket , F. Atrio-Barandela

We report measurements of the cosmic microwave background (CMB) power spectrum from the complete 2008 South Pole Telescope (SPT) data set. We analyze twice as much data as the first SPT power spectrum analysis, using an improved…

We present the first detection of the thermal Sunyaev-Zel'dovich (tSZ) effect from a cluster of galaxies performed with a KIDs (Kinetic Inductance Detectors) based instrument. The tSZ effect is a distortion of the black body CMB (Cosmic…

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