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On the scale of galactic haloes, the distribution of matter in the cosmos is affected by energetic, non-gravitational processes; so-called baryonic feedback. A lack of knowledge about the details of how feedback processes redistribute…

Cosmology and Nongalactic Astrophysics · Physics 2020-09-23 A. J. Mead , T. Tröster , C. Heymans , L. Van Waerbeke , I. G. McCarthy

We stack maps of the thermal Sunyaev-Zel'dovich effect produced by the Planck Collaboration around the centers of cosmic voids defined by the distribution of galaxies in the CMASS sample of the Baryon Oscillation Spectroscopic Survey,…

Cosmology and Nongalactic Astrophysics · Physics 2018-03-21 David Alonso , J. Colin Hill , Renée Hložek , David N. Spergel

We cross-correlate WMAP and ROSAT diffuse X-ray background maps and look for common features in both data sets. We use the power spectrum of the product maps and the cross-power spectrum to highlight a possible correlation. The power…

Astrophysics · Physics 2009-11-07 J. M. Diego , J. Silk , W. Sliwa

The latest Planck results on the power spectrum of the Compton-$y$ parameter are the most accurate probe of the thermal Sunyaev Zeldovich (tSZ) effect caused by resolved and un-resolved clusters of galaxies. On large angular scales, the…

Cosmology and Nongalactic Astrophysics · Physics 2018-06-14 Boris Bolliet

The dispersion measures (${\rm DMs}$) from fast radio bursts (FRBs) and the thermal Sunyaev--Zeldovich (tSZ) effect probe the free-electron density and pressure, respectively, in the intergalactic medium (IGM) and the intervening galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-05 Ryuichi Takahashi , Kunihito Ioka , Masato Shirasaki , Ken Osato

(Abridged) The hot gas in the IGM produces anisotropies in the Cosmic Microwave Background (CMB) through the thermal Sunyaev-Zel'dovich (SZ) effect. The SZ effect is a powerful probe of large-scale structure in the universe and must be…

Astrophysics · Physics 2009-12-30 A. Refregier , E. Komatsu , D. N. Spergel , U. -L. Pen

We present a simple method for tracing the spatial distribution and predicting the physical properties of the Warm-Hot Intergalactic Medium (WHIM), from the map of galaxy light in the local universe. Under the assumption that biasing is…

Astrophysics · Physics 2009-11-10 M. Viel , E. Branchini , R. Cen , J. P. Ostriker , S. Matarrese , P. Mazzotta , B. Tully

This is the first meeting specifically devoted to the topic of cluster soft excess and related phenomena. It calls together a group of some 40 scientists, mostly experts in the field, to present their findings on the observational aspects…

Astrophysics · Physics 2009-09-29 Richard Lieu , Jonathan Mittaz

We compute the cross-correlation between the Warm-Hot Intergalactic Medium and maps of Cosmic Microwave Background temperature anisotropies using a log-normal probability density function to describe the weakly non-linear matter density…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 I. Suarez-Velásquez , F. -S. Kitaura , F. Atrio-Barandela , J. P. Muecket

We present results for the cross-correlation between the WMAP 1st-year cosmic microwave background (CMB) anisotropy data and optical galaxy surveys: the APM and SDSS DR1 catalogs. Our measurement of a positive CMB-galaxy correlation on…

Astrophysics · Physics 2007-05-23 Pablo Fosalba , Enrique Gaztanaga , Francisco J. Castander

We present the results of spectroscopic observations of galaxies associated with the diffuse X-ray emitting structure discovered by Zappacosta et al. (2002). After measuring the redshifts of 161 galaxies, we confirm an overdensity of…

Astrophysics · Physics 2009-11-13 F. Mannucci , G. Bonnoli , L. Zappacosta , R. Maiolino , M. Pedani

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…

Cosmology and Nongalactic Astrophysics · Physics 2017-02-01 G. Hurier

Using cosmological hydrodynamical simulations, we investigate the prospects of the thermal Sunyaev-Zel'dovich (tSZ) effect to detect the missing baryons in the local universe. We find that at least 80% of the tSZ luminosity is generated in…

Astrophysics · Physics 2009-11-11 Carlos Hernandez-Monteagudo , Hy Trac , Raul Jimenez , Licia Verde

The thermal Sunyaev-Zel'dovich (tSZ) effect offers a means of probing the hot gas in and around massive galaxies and galaxy groups and clusters, which is thought to constitute a large fraction of the baryon content of the Universe. The…

Cosmology and Nongalactic Astrophysics · Physics 2015-08-06 Amandine M. C. Le Brun , Ian G. McCarthy , Jean-Baptiste Melin

The Universe has evolved from an initial diffuse, uniform gas to a complex structure that includes both voids and high-density galaxy clusters connected by gaseous filaments, known as the Cosmic Web, and traced by 3D surveys of galaxies.…

Cosmology and Nongalactic Astrophysics · Physics 2023-07-28 Giulia Cerini , Nico Cappelluti , Massimiliano Galeazzi , Eugenio Ursino

Galaxy clusters are the most massive gravitationally bound structures in the Universe, comprising thousands of galaxies and pervaded by a diffuse, hot ``intracluster medium'' (ICM) that dominates the baryonic content of these systems. The…

We present measurements of the spatial mapping between (hot) baryons and the total matter in the Universe, via the cross-correlation between the thermal Sunyaev-Zeldovich (tSZ) map from Planck and the weak gravitational lensing maps from…

About 90% of baryons in the universe have thus far escaped direct observation. This is known as the {\it missing baryon problem}. The Sunyaev Zel'dovich effect (SZ effect) has the potential to directly measure the state of the majority of…

Astrophysics · Physics 2007-05-23 P. J. Zhang , U. L. Pen

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