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We use an analytic model to investigate the theoretical uncertainty on the thermal Sunyaev-Zel'dovich (SZ) power spectrum due to astrophysical uncertainties in the thermal structure of the intracluster medium. Our model accounts for star…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Laurie D. Shaw , Daisuke Nagai , Suman Bhattacharya , Erwin T. Lau

Using the full, three-dimensional potential of galaxy cluster halos (drawn from an N-body simulation of the current, most favored cosmology), the distribution of the X-ray emitting gas is found by assuming a polytropic equation of state and…

Astrophysics · Physics 2011-02-11 Paul Bode , Jeremiah P. Ostriker , Jochen Weller , Laurie Shaw

We consider the prospects for measuring the pairwise kinetic Sunyaev-Zel'dovich (kSZ) signal from galaxy clusters discovered in large photometric surveys such as the Dark Energy Survey (DES). We project that the DES cluster sample will, in…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Ryan Keisler , Fabian Schmidt

We present the first weak-lensing-based scaling relation between galaxy cluster mass, M_wl, and integrated Compton parameter Y_sph. Observations of 18 galaxy clusters at z~0.2 were obtained with the Subaru 8.2-m telescope and the…

We study the redshift evolution of the X-ray and Sunyaev-Zel'dovich (SZ) scaling relations for galaxy groups and clusters in the FABLE suite of cosmological hydrodynamical simulations. Using an expanded sample of $27$ high-resolution…

Cosmology and Nongalactic Astrophysics · Physics 2019-09-04 Nicholas A. Henden , Ewald Puchwein , Debora Sijacki

We present the X-ray properties and scaling relations of a flux-limited morphology-unbiased sample of 12 X-ray luminous galaxy clusters at redshift around 0.2 based on XMM-Newton observations. The scaled radial profiles are characterized by…

Astrophysics · Physics 2009-11-13 Y. -Y. Zhang , A. Finoguenov , H. Boehringer , J. -P. Kneib , G. P. Smith , O. Czoske , G. Soucail

In the coming years, Sunyaev-Zel'dovich (SZ) measurements can dramatically improve our understanding of the Intergalactic Medium (IGM) and the role of feedback processes on galaxy formation, allowing us to calibrate important astrophysical…

(abridged) We explore in this paper the ability of spatially resolved spectroscopic measurements of the SZ effect (SZE) to determine the temperature profile of galaxy clusters. We derive a general formalism for the thermal SZE in galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 S. Colafrancesco , P. Marchegiani

Full-sky microwave surveys like the upcoming Planck satellite mission will detect of order 10^4 galaxy clusters through their thermal Sunyaev-Zel'dovich effect. I investigate the properties of the gravitationally lensing subsample of these…

Astrophysics · Physics 2009-10-31 Matthias Bartelmann

We present the optical and X-ray properties of four clusters recently discovered by the South Pole Telescope (SPT) using the Sunyaev-Zel'dovich effect (SZE). The four clusters are located in one of the common survey areas of the southern…

Astrophysics · Physics 2009-11-13 Felipe Menanteau , John P. Hughes

We examine a sample of $\sim 250 000$ "locally brightest galaxies" selected from the Sloan Digital Sky Survey to be central galaxies within their dark matter halos. These were previously stacked by the Planck Collaboration to measure the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-23 Michael E. Anderson , Massimo Gaspari , Simon D. M. White , Wenting Wang , Xinyu Dai

We present a statistically-optimal and model-independent method to extract the pressure profile of hot gas in the intracluster medium (ICM). Using the thermal Sunyaev-Zeldovich effect, we constrain the mean pressure profile of the ICM by…

Cosmology and Nongalactic Astrophysics · Physics 2013-09-02 Siavash Aslanbeigi , Guilhem Lavaux , Amir Hajian , Niayesh Afshordi

We introduce an analytic model of the diffuse intergalactic medium in galaxy clusters based on a polytropic equation of state for the gas in hydrostatic equilibrium with the cluster gravitational potential. This model is directly applicable…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 G. Esra Bulbul , Nicole Hasler , Massimiliano Bonamente , Marshall Joy

Galaxy clusters can be used as powerful cosmological probes, provided one can obtain accurate mass estimates, which requires a precise knowledge of the underlying astrophysics of galaxy clusters. For these purposes, spatially resolved…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-12 R. Wicker , M. De Petris , A. Ferragamo , I. Bartalucci , G. Yepes , E. Rasia , R. Adam , W. Cui , F. Mayet , L. Perotto , M. Muñoz-Echeverría

We describe polarization of the Sunyaev-Zel'dovich (SZ) effect associated with electron pressure anisotropy likely present in the intracluster medium (ICM). The ICM is an astrophysical example of a weakly collisional plasma where the Larmor…

High Energy Astrophysical Phenomena · Physics 2017-12-27 I. Khabibullin , S. Komarov , E. Churazov , A. Schekochihin

We present the observed relation between the cosmic microwave background (CMB) temperature decrement due to the Sunyaev-Zeldovich (SZ) effect and the X-ray luminosity of galaxy clusters. We discuss this relation in terms of the cluster…

Astrophysics · Physics 2009-10-31 Asantha R. Cooray

We present an analysis aimed at combining cosmological constraints from number counts of galaxy clusters identified through the Sunyaev-Zeldovich effect, obtained with the South Pole Telescope (SPT), and from Lyman-$\alpha$ spectra obtained…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-20 Matteo Esposito , Vid Iršič , Matteo Costanzi , Stefano Borgani , Alexandro Saro , Matteo Viel

X-ray observations of the hot intra-cluster medium (ICM) in galaxy groups and clusters provide quantities such as their gas mass, X-ray luminosity, and temperature. The analysis of the scaling relations between these observable properties…

Cosmology and Nongalactic Astrophysics · Physics 2023-04-05 Lorenzo Lovisari , Ben J. Maughan

We present constraints on cosmological parameters based on a sample of Sunyaev-Zel'dovich-selected galaxy clusters detected in a millimeter-wave survey by the Atacama Cosmology Telescope. The cluster sample used in this analysis consists of…