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Related papers: JoXSZ: Joint X-SZ fitter for galaxy clusters

200 papers

We present an accurate analytic fitting formula for the numerical results for the relativistic corrections to the thermal Sunyaev-Zel'dovich effect for clusters of galaxies. The numerical results for the relativistic corrections have been…

Astrophysics · Physics 2011-02-11 Satoshi Nozawa , Naoki Itoh , Youhei Kawana , Yasuharu Kohyama

The Sunyaev-Zel'dovich (SZ) effect expected to be associated with massive star-formation activity produced during the formation of the most luminous bulges of normal galaxies is discussed. Using 1-D chemohydrodynamical models for spheroidal…

Recent observations reveal detailed structures of mergers in galaxy clusters. Moving cold fronts could be identified as remnants of subclusters. They are believed to mark the late stage of a merging process. Dynamics, geometry and extension…

Astrophysics · Physics 2007-05-23 P. M. Koch , Ph. Jetzer

In this paper we provide a general derivation of the non-thermal (as well as of the thermal) SZ effect in galaxy clusters which is exact in the Thomson limit to any approximation order in the optical depth. Such a general derivation is…

Astrophysics · Physics 2009-11-07 S. Colafrancesco , P. Marchegiani , E. Palladino

The kinetic Sunyaev-Zeldovich (kSZ) effect has now become a clear target for ongoing and future studies of the cosmic microwave background (CMB) and cosmology. Aside from the bulk cluster motion, internal motions also lead to a kSZ signal.…

Cosmology and Nongalactic Astrophysics · Physics 2023-06-28 Edoardo Altamura , Scott T. Kay , Jens Chluba , Imogen Towler

We present the preparation for an observation of the Sunyaev-Zeldovich (SZ) effect with the 100m telescope in Effelsberg. We calculate the expected diminution of the cosmic microwave background radiation (CMB) at radio wavelength towards a…

Astrophysics · Physics 2007-05-23 Michael Thierbach , Reinhard Schlickeiser , Richard Wielebinski

We investigate the connection between a cluster's structural configuration and observable measures of its gas emission that can be obtained in X-ray and Sunyaev-Zeldovich (SZ) surveys. We present an analytic model for the intracluster gas…

Astrophysics of Galaxies · Physics 2024-11-20 Andrew Sullivan , Chris Power , Connor Bottrell , Aaron Robotham , Stas Shabala

We show how to place constraints on cluster physics by stacking the weak lensing signals from multiple clusters found through the Sunyaev-Zeldovich (SZ) effect. For a survey that covers about 200 sq. deg. both in SZ and weak lensing…

Astrophysics · Physics 2008-11-26 Carolyn Sealfon , Licia Verde , Raul Jimenez

The Sunyaev-Zel'dovich effect causes a change in the apparent brightness of the Cosmic Microwave Background Radiation towards a cluster of galaxies or any other reservoir of hot plasma. Measurements of the effect provide distinctly…

Astrophysics · Physics 2008-11-26 M. Birkinshaw

The properties of galaxy clusters as a function of redshift can be utilized as an important cosmological tool. We present initial results from a program of follow-up observations of the Sunyaev-Zeldovich effect (SZE) in high redshift galaxy…

Conventionally, in galaxy surveys, cosmological constraints on the growth and expansion history of the universe have been obtained from the measurements of redshift-space distortions and baryon acoustic oscillations embedded in the…

Cosmology and Nongalactic Astrophysics · Physics 2022-08-16 Teppei Okumura , Atsushi Taruya

Secondary anisotropies in the cosmic microwave background are a treasure-trove of cosmological information. Interpreting current experiments probing them are limited by theoretical uncertainties rather than by measurement errors. Here we…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 N. Battaglia , J. R. Bond , C. Pfrommer , J. L. Sievers

High-frequency, high-resolution imaging of the Sunyaev-Zel'dovich (SZ) effect is an important technique to study the complex structures of the atmospheres of merging galaxy clusters. Such observations are sensitive to the details of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 D. A. Prokhorov , S. Colafrancesco , T. Akahori , E. T. Million , S. Nagataki , K. Yoshikawa

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…

Astrophysics · Physics 2009-11-13 Daniel R. Wik , Craig L. Sarazin , Paul M. Ricker , Scott W. Randall

We introduce the Marenostrum-MultiDark SImulations of galaxy Clusters (MUSIC) Dataset, one of the largest sample of hydrodynamically simulated galaxy clusters with more than 500 clusters and 2000 groups. The objects have been selected from…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Federico Sembolini , Gustavo Yepes , Marco De Petris , Stefan Gottloeber , Luca Lamagna , Barbara Comis

We measure the thermodynamic properties of cluster outer regions to provide constraints on the processes that rule the formation of large scale structures. We derived the thermodynamic properties of the intracluster gas (temperature,…

Cosmology and Nongalactic Astrophysics · Physics 2015-10-08 Dominique Eckert , Silvano Molendi , Franco Vazza , Stefano Ettori , Stéphane Paltani

We investigate the impact of gas evolution on the expected yields from deep Sunyaev-Zel'dovich (SZ) effect surveys as well as on the expected SZ effect contribution to fine scale anisotropy in the Cosmic Microwave Background. The…

Astrophysics · Physics 2009-11-06 Gilbert P. Holder , John E. Carlstrom

We report the detection of the Sunyaev-Zel'dovich (SZ) effect of galaxy cluster XLSSU J021744.1-034536, using 30 GHz CARMA data. This cluster was discovered via its extended X-ray emission in the XMM-Newton Large Scale Structure survey, the…