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Recent CHANDRA observations have revealed the presence of cold fronts in many clusters of galaxies. The cold fronts are believed to be produced by the bulk motions of massive, dense, cold gas clouds with respect to the hotter, more rarefied…

天体物理学 · 物理学 2009-11-10 J. M. Diego , P. Mazzotta , J. Silk

Poorly understood feedback processes associated with highly-luminous black hole accretion in quasars may dramatically affect the properties of their host galaxies. We search for the effect of quasar feedback on surrounding gas using Planck…

宇宙学与河外天体物理 · 物理学 2015-06-23 John J. Ruan , Matthew McQuinn , Scott F. Anderson

Sensitive surveys of the Cosmic Microwave Background will detect thousands of galaxy clusters via the Sunyaev-Zel'dovich (SZ) effect. Two SZ observables, the central or maximum and integrated Comptonization parameters y_max and Y, relate in…

天体物理学 · 物理学 2009-11-13 Daniel R. Wik , Craig L. Sarazin , Paul M. Ricker , Scott W. Randall

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

Large-angle fluctuations in the cosmic microwave background temperature induced by the integrated Sachs-Wolfe effect and Compton-y distortions from the thermal Sunyaev-Zeldovich (tSZ) effect are both due to line-of-sight density…

宇宙学与河外天体物理 · 物理学 2016-09-20 Cyril Creque-Sarbinowski , Simeon Bird , Marc Kamionkowski

The Sunyaev-Zel'dovich (SZ) effect has long been identified as one of the most important secondary effects of the Cosmic Microwave Background (CMB). On the one hand, it is a potentially very powerful cosmological probe providing us with…

宇宙学与河外天体物理 · 物理学 2015-05-13 N. Taburet , M. Douspis , N. Aghanim

A complete picture of the gas thermodynamics around galaxies is imprinted on the cosmic microwave background (CMB). Indeed, the thermal, kinematic, and relativistic Sunyaev-Zel'dovich effects (tSZ, kSZ, rSZ) measure the gas density,…

宇宙学与河外天体物理 · 物理学 2026-03-05 Sadaf Kadir , Bernardita Ried Guachalla , Sihan Yuan , Emmanuel Schaan , Risa H. Wechsler

Studying galaxy clusters through their Sunyaev-Zel'dovich (SZ) imprint on the Cosmic Microwave Background has many important advantages. The total SZ signal is an accurate and precise tracer of the total pressure in the intra-cluster medium…

宇宙学与河外天体物理 · 物理学 2014-12-19 Keith Grainge , Stefano Borgani , Sergio Colafrancesco , Chiara Ferrari , Anna Scaife , Paolo Marchegiani , S. Emritte , J. Weller

Observations of clusters in the 30 to 350 GHz range can in principle be used to determine a galaxy cluster's Comptonization parameter, y, peculiar velocity, v and gas temperature, T_e via the dependence of the kinetic and thermal…

天体物理学 · 物理学 2009-11-10 Lloyd Knox , Gil Holder , Sarah Church

We extend the formalism of the relativistic thermal and kinematic Sunyaev-Zel'dovich effects and include the polarization of the cosmic microwave background photons. We consider the situation that a cluster of galaxies is moving with a…

天体物理学 · 物理学 2015-06-24 Naoki Itoh , Satoshi Nozawa , Yasuharu Kohyama

Study of the primary anisotropies of the Cosmic Microwave Background (CMB) can be used to determine the cosmological parameters to a very high precision. The power spectrum of the secondary CMB anisotropies due to the thermal…

天体物理学 · 物理学 2016-08-30 Subhabrata Majumdar

This study shows one important effect of preexistent cosmic microwave background temperature fluctuations on the determination of the Hubble constant through Sunyaev-Zel'dovich effect of clusters of galaxies, especially when coupled with…

天体物理学 · 物理学 2009-10-30 Renyue Cen

The hot gas in clusters of galaxies creates a distinctive spectral distortion in the cosmic microwave background (CMB) via the Sunyaev-Zel'dovich (SZ) effect. The spectral signature of the SZ can be used to measure the CMB temperature at…

宇宙学与河外天体物理 · 物理学 2022-02-09 Gemma Luzzi , Emanuele D'Angelo , Hervé Bourdin , Federico De Luca , Pasquale Mazzotta , Filippo Oppizzi , Gianluca Polenta

We present angular power spectra of the cosmic microwave background radiation anisotropy due to fluctuations of the Sunyaev-Zel'dovich (SZ) effect through clusters of galaxies. A contribution from the correlation among clusters is…

天体物理学 · 物理学 2009-10-31 Eiichiro Komatsu , Tetsu Kitayama

The Sunyaev-Zel'dovich (SZ) effect of a cluster of galaxies is usually measured after background radio sources are removed from the cluster field. Gravitational lensing by the cluster potential leads to a systematic deficit in the residual…

天体物理学 · 物理学 2009-10-28 Abraham Loeb , Alexandre Refregier

The fluctuations in the Cosmic Microwave Background (CMB) intensity due to the Sunyaev-Zeldovich (SZ) effect are the sum of a thermal and a kinetic contribution. Separating the two components to measure the peculiar velocity of galaxy…

天体物理学 · 物理学 2009-11-10 A. Diaferio , S. Borgani , L. Moscardini , G. Murante , K. Dolag , V. Springel , G. Tormen , L. Tornatore , P. Tozzi

We present results on the thermal and kinetic Sunyaev-Zel'dovich (SZ) effects from a sequence of high resolution hydrodynamic simulations of structure formation, including cooling, feedback and metal injection. These simulations represent a…

天体物理学 · 物理学 2008-11-26 Martin White , Lars Hernquist , Volker Springel

We used magneto-hydrodynamical cosmological simulations to investigate the cross-correlation between different observables (i.e. X-ray emission, Sunyaev-Zeldovich signal at 21 cm, HI temperature decrement, diffuse synchrotron emission and…

宇宙学与河外天体物理 · 物理学 2020-04-29 Claudio Gheller , Franco Vazza

We compute the spectral distortions of the Cosmic Microwave Background (CMB) polarization induced by non-linear effects in the Compton interactions between CMB photons and cold intergalactic electrons. This signal is of the $y$-type and is…

宇宙学与河外天体物理 · 物理学 2015-06-18 Sebastien Renaux-Petel , Christian Fidler , Cyril Pitrou , Guido W. Pettinari

The cosmic background due to the Sunyaev-Zeldovich (SZ) effect is expected to be the largest signal at mm and cm wavelengths at a resolution of a few arcminutes. We investigate some simple statistics of SZ maps and their scaling with the…

天体物理学 · 物理学 2009-11-13 Gilbert Holder , Ian G. McCarthy , Arif Babul