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Cosmic microwave background radiation can supply us some most significant parts of the information on the universe. Some researchers believe that The gravitational system cannot be decribed by the standard statistical mechanics. In this…

宇宙学与河外天体物理 · 物理学 2023-01-03 Yang Liu

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 signatures from Sunyaev-Zeldovich effects and free-free emission in the intergalactic and intracluster medium and at galactic scales probe the structure evolution at various cosmic times. The detection of these sources and, possibly,…

天体物理学 · 物理学 2009-11-10 Carlo Burigana , Gianfranco De Zotti , Luigina Feretti

The improving sensitivity of measurements of the kinetic Sunyaev-Zel'dovich (SZ) effect opens a new window into the thermodynamic properties of the baryons in halos. We propose a methodology to constrain these thermodynamic properties by…

宇宙学与河外天体物理 · 物理学 2017-12-13 Nicholas Battaglia , Simone Ferraro , Emmanuel Schaan , David Spergel

We have deduced the cosmic microwave background (CMB) temperature in the Coma cluster (A1656, $z=0.0231$), and in A2163 ($z=0.203$) from spectral measurements of the Sunyaev-Zel'dovich (SZ) effect over four passbands at radio and microwave…

We derive fully nonlinear expressions for temperature fluctuations from the kinetic Sunyaev-Zeldovich (SZ) effect, the scattering of cosmic microwave background photons off hot electrons in bulk motion. Our result reproduces the…

天体物理学 · 物理学 2009-11-06 Chung-Pei Ma , J. N. Fry

The thermal Sunyaev-Zel'dovich (tSZ) effect is the inverse-Compton scattering of cosmic microwave background (CMB) photons off hot, ionized electrons, primarily located in galaxy groups and clusters. Recent years have seen immense…

宇宙学与河外天体物理 · 物理学 2015-10-22 J. Colin Hill

The thermal Sunyaev-Zel'dovich (tSZ) effect is a spectral distortion of the cosmic microwave background (CMB) resulting from inverse Compton scattering of CMB photons with electrons in the medium of galaxy clusters. The spectrum of the tSZ…

宇宙学与河外天体物理 · 物理学 2023-05-18 David Zegeye , Thomas Crawford , Wayne Hu

We study the contribution of the kinematic Sunyaev-Zel'dovich (kSZ) effect, generated by the warm-hot intergalactic medium (WHIM), to the cosmic microwave background (CMB) temperature anisotropies in the Five-Year Wilkinson Microwave…

宇宙学与河外天体物理 · 物理学 2009-07-22 Ricardo Genova-Santos , Fernando Atrio-Barandela , Jan Muecket , Jochen Klar

Temperature asymmetry in the cosmic microwave background (CMB) data by the Planck satellite has been discovered and analyzed toward several nearby edge-on spiral galaxies. It provides a way to probe galactic halo rotation, and to constrain…

星系天体物理 · 物理学 2022-08-03 Noraiz Tahir , Francesco De Paolis , Asghar Qadir , Achille A. Nucita

The spectral distortion in the Cosmic Microwave Background Radiation (CMBR) caused from the inverse Compton scattering of low energy CMB photons by thermally distributed hot electrons in massive clusters of galaxies - better known as the…

天体物理学 · 物理学 2007-05-23 Sujan Sengupta

The Sunyaev-Zel'dovich (SZ) effects are produced by the interaction of cosmic microwave background (CMB) photons with the ionized and diffuse gas of electrons inside galaxy clusters integrated along the line of sight. The two main effects…

宇宙学与河外天体物理 · 物理学 2017-02-01 G. Hurier

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

We have imaged the Sunyaev-Zel'dovich (SZ) effect signals at 140 and 270 GHz towards ten galaxy clusters with Bolocam and AzTEC/ASTE. We also used Planck data to constrain the signal at large angular scales, Herschel-SPIRE images to…

At high angular frequencies the thermal Sunyaev-Zel'dovich (tSZ) effect constitutes the dominant signal in the CMB sky. The tSZ effect is caused by large scale pressure fluctuations in the baryonic distribution in the Universe so its…

宇宙学与河外天体物理 · 物理学 2012-01-11 Dipak Munshi , Joseph Smidt , Shahab Joudaki , Peter Coles

The Sunyaev-Zel'dovich (SZ) effect is a powerful probe of the evolution of structures in the universe, and is thus highly sensitive to cosmological parameters $\sigma_8$ and $\Omega_m$, though its power is hampered by the current…

宇宙学与河外天体物理 · 物理学 2017-08-16 G. Hurier , F. Lacasa

We performed high-resolution simulations of a sample of 14 galaxy clusters that span a mass range from 5 x 10^13 M_solar/h to 2 x 10^15 M_solar/h to study the effects of cosmic rays (CRs) on thermal cluster observables such as X-ray…

天体物理学 · 物理学 2009-09-29 Christoph Pfrommer , Torsten A. Ensslin , Volker Springel , Martin Jubelgas , Klaus Dolag

The cosmic microwave background (CMB) energy spectrum is a near-perfect blackbody. The standard model of cosmology predicts small spectral distortions to this form, but no such distortion of the sky-averaged CMB spectrum has yet been…

宇宙学与河外天体物理 · 物理学 2016-01-27 J. Colin Hill , Nick Battaglia , Jens Chluba , Simone Ferraro , Emmanuel Schaan , David N. Spergel

Small scale CMB angular power spectrum contains not only primordial CMB information but also many contaminants coming from secondary anisotropies. Most of the latter depend on the cosmological model but are often marginalised over. We…

宇宙学与河外天体物理 · 物理学 2022-02-09 Marian Douspis , Laura Salvati , Adélie Gorce , Nabila Aghanim

We present a forecast of the pairwise kinematic Sunyaev-Zel'dovich (kSZ) measurement that will be achievable with the future CMB-S4 experiment. CMB-S4 is the next stage for ground-based cosmic microwave background experiments, with a…

宇宙学与河外天体物理 · 物理学 2024-09-30 E. Schiappucci , S. Raghunathan , C. To , F. Bianchini , C. L. Reichardt , N. Battaglia , B. Hadzhiyska , S. Kim , J. B. Melin , C. Sifón , E. M. Vavagiakis