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The thermal Sunyaev-Zel'dovich (tSZ) effect induces a Compton-$y$ distortion in cosmic microwave background (CMB) temperature maps that is sensitive to a line of sight integral of the ionized gas pressure. By correlating the positions of…

宇宙学与河外天体物理 · 物理学 2020-02-26 S. Pandey , E. J. Baxter , J. C. Hill

The thermal Sunyaev-Zel'dovich (tSZ) effect is a powerful tool with the potential for constraining directly the properties of the hot gas that dominates dark matter halos because it measures pressure and thus thermal energy density.…

The thermal Sunyaev-Zeldovich (tSZ) effect is associated with galaxy clusters - extremely large and dense structures tracing the dark matter with a higher bias than isolated galaxies. We propose to use the tSZ data to separate galaxies from…

We construct the mean thermal Sunyaev-Zel'dovich (tSZ) Comptonization y profile around Luminous Red Galaxies (LRGs) in the redshift range 0.16 < z < 0.47 from the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) using the Planck y map.…

We describe a fast method to simulate in a semi-analytical way consistent maps of the thermal, kinetic and polarised Sunyaev-Zel'dovich effect, featuring both cluster spatial correlations and large scale velocity flows.

天体物理学 · 物理学 2007-05-23 J. Delabrouille , J. -B. Melin , J. G. Bartlett

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

In the context of a cosmological study of the bulk flows in the Universe, we present a detailed study of the statistical properties of the kinematic Sunyaev-Zel'dovich (kSZ) effect. We first compute analytically the correlation function and…

天体物理学 · 物理学 2009-11-13 C. Hernandez-Monteagudo , L. Verde , Raul Jimenez , D. N. Spergel

We explore a potential new probe of reionization: the cross-correlation of high-redshift galaxies with maps of the thermal Sunyaev-Zel'dovich (tSZ) effect. We consider two types of high redshift galaxies: Lyman break galaxies (LBGs) and…

宇宙学与河外天体物理 · 物理学 2021-01-20 Eric J. Baxter , Lewis Weinberger , Martin Haehnelt , Vid Iršič , Girish Kulkarni , Shivam Pandey , Anirban Roy

The hot gas embedded in the large-scale structures in the Universe produces secondary fluctuations in the Cosmic Microwave Background (CMB). Because it is proportional to the gas pressure integrated along the line of sight, this effect, the…

天体物理学 · 物理学 2013-05-29 Alexandre Refregier , Romain Teyssier

We propose a new analysis of small scale CMB data by introducing the cosmological dependency of the foreground signals, focusing first on the thermal Sunyaev-Zel'dovich (tSZ) power spectrum, derived from the halo model. We analyse the…

宇宙学与河外天体物理 · 物理学 2022-03-22 Marian Douspis , Laura Salvati , Adélie Gorce , Nabila Aghanim

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

Baryonification algorithms model the impact of galaxy formation and feedback on the matter field in gravity-only simulations by adopting physically motivated parametric prescriptions. In this paper, we extend these models to describe gas…

宇宙学与河外天体物理 · 物理学 2024-10-09 Giovanni Aricò , Raul E. Angulo

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…

天体物理学 · 物理学 2009-11-11 Carlos Hernandez-Monteagudo , Hy Trac , Raul Jimenez , Licia Verde

Hydrodynamical simulations play a fundamental role in modern cosmological research, serving as a crucial bridge between theoretical predictions and observational data. However, due to their computational intensity, these simulations are…

宇宙学与河外天体物理 · 物理学 2025-03-12 Andrés Caro , Daniel de Andres , Weiguang Cui , Gustavo Yepes , Marco De Petris , Antonio Ferragamo , Félicien Schiltz , Amélie Nef

We use hydrodynamical N-body simulations to study the kinetic Sunyaev-Zel'dovich effect. We construct sets of maps, one square degree in size, in three different cosmological models. We confirm earlier calculations that on the scales…

天体物理学 · 物理学 2009-10-31 Antonio C da Silva , Domingos Barbosa , Andrew R Liddle , Peter A Thomas

Producing thousands of simulations of the dark matter distribution in the Universe with increasing precision is a challenging but critical task to facilitate the exploitation of current and forthcoming cosmological surveys. Many inexpensive…

宇宙学与河外天体物理 · 物理学 2023-02-02 Davide Piras , Benjamin Joachimi , Francisco Villaescusa-Navarro

The Sunyaev--Zel'dovich (SZ) effect is a global distortion of the Cosmic Microwave Background (CMB) spectrum as a result of its interaction with a hot electron plasma in the intracluster medium of large structures gravitationally viralized…

宇宙学与河外天体物理 · 物理学 2018-01-25 Alexander Bonilla , Jairo E. Castillo

In recent years, the study of secondary anisotropies in the Cosmic Microwave Background has become a fundamental instrument to test our understanding of the Universe. Using a set of lightcones produced with the ``Dark Energy and Massive…

宇宙学与河外天体物理 · 物理学 2026-05-20 Davide Luchina , Mauro Roncarelli , Matteo Calabrese , Giulio Fabbian , Carmelita Carbone

The thermal Sunyaev-Zel'dovich effect (tSZ) is a sensitive probe of cosmology, as it traces the abundance of galaxy clusters and groups in the late-time Universe. Upcoming cosmic microwave background experiments such as the Simons…

宇宙学与河外天体物理 · 物理学 2025-06-24 Alina Sabyr , J. Colin Hill , Zoltan Haiman

Galaxy cluster mass functions are a function of cosmology, but mass is not a direct observable, and systematic errors abound in all its observable proxies. Mass-free inference can bypass this challenge, but it requires large suites of…

宇宙学与河外天体物理 · 物理学 2023-10-19 Urmila Chadayammuri , Michelle Ntampaka , John ZuHone , Àkos Bogdàn , Ralph Kraft