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The Sunyaev-Zeldovich (SZ) effect is a window into the astrophysical processes of galaxy clusters, and relativistic corrections (the "rSZ") promise to provide a global census of the gas feedback within clusters. Upcoming wide-field…

宇宙学与河外天体物理 · 物理学 2025-10-13 L. Kuhn , Z. Li , William R. Coulton

We report on the measurement of the thermal Sunyaev-Zel'dovich (tSZ) Effect in the circumgalactic medium (CGM) of 641,923 galaxies with $\rm M_\star$=$\rm 10^{9.8-11.3}M_\odot$ at $z<$0.5, pushing the exploration of tSZ Effect to lower-mass…

星系天体物理 · 物理学 2023-08-02 Sanskriti Das , Yi-Kuan Chiang , Smita Mathur

Using the results of a cosmological hydrodynamical simulation of the concordance LambdaCDM model, we study the global properties of the Sunyaev-Zel'dovich (SZ) effects, both considering the thermal (tSZ) and the kinetic (kSZ) component. The…

天体物理学 · 物理学 2008-11-26 M. Roncarelli , L. Moscardini , S. Borgani , K. Dolag

We calculate the one-point probability density distribution functions (PDF) and the power spectra of the thermal and kinetic Sunyaev-Zeldovich (tSZ and kSZ) effects and the mean Compton Y parameter using the Magneticum Pathfinder…

宇宙学与河外天体物理 · 物理学 2016-08-24 Klaus Dolag , Eiichiro Komatsu , Rashid Sunyaev

From 1,000 hydrodynamic simulations of the CAMELS project, each with a different value of the cosmological and astrophysical parameters, we generate 15,000 gas temperature maps. We use a state-of-the-art deep convolutional neural network to…

宇宙学与河外天体物理 · 物理学 2022-12-28 Faizan G. Mohammad , Francisco Villaescusa-Navarro , Shy Genel , Daniel Angles-Alcazar , Mark Vogelsberger

The Sunyaev-Zel'dovich (SZ) effect associated with pressure fluctuations of the large scale structure gas distribution will be probed with current and upcoming wide-field small angular scale cosmic microwave background experiments. We study…

天体物理学 · 物理学 2008-11-26 Asantha Cooray

Forthcoming experiments will enable us to determine tomographic shear spectra at a high precision level. Most predictions about them have until now been biased on algorithms yielding the expected linear and non-linear spectrum of density…

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

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

We introduce GODMAX (Gas thermODynamics and Matter distribution using jAX), a novel code designed to calculate correlations between the cosmological matter distribution and various gas thermodynamic quantities. Utilizing the extensive…

宇宙学与河外天体物理 · 物理学 2024-02-01 Shivam Pandey , Jaime Salcido , Chun-Hao To , J. Colin Hill , Dhayaa Anbajagane , Eric J. Baxter , Ian G. McCarthy

We develop a machine learning algorithm that generates high-resolution thermal Sunyaev-Zeldovich (SZ) maps of novel galaxy clusters given only halo mass and mass accretion rate. The algorithm uses a conditional variational autoencoder…

宇宙学与河外天体物理 · 物理学 2022-02-23 Tibor Rothschild , Daisuke Nagai , Han Aung , Sheridan B. Green , Michelle Ntampaka , John ZuHone

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

The impacts of Compton scattering of hot cosmic gas with the cosmic microwave background radiation (Sunyaev-Zel'dovich effect, SZ) are consistently quantified in Gaussian and non-Gaussian scenarios, by means of 3D numerical, N-body,…

宇宙学与河外天体物理 · 物理学 2015-06-17 Francesco Pace , Umberto Maio

The thermal Sunyaev-Zel'dovich (tSZ) effect measures the line-of-sight projection of the thermal pressure of free electrons and lacks any redshift information. By cross correlating the tSZ effect with an external cosmological tracer we can…

宇宙学与河外天体物理 · 物理学 2014-06-11 Geraint Pratten , Dipak Munshi

Upcoming advances in galaxy surveys and cosmic microwave background data will enable measurements of the anisotropic distribution of diffuse gas in filaments and superclusters at redshift $z=1$ and beyond, observed through the thermal…

宇宙学与河外天体物理 · 物理学 2023-06-14 Martine Lokken , Weiguang Cui , J. Richard Bond , Renée Hložek , Norman Murray , Romeel Davé , Alexander van Engelen

The thermal Sunyaev-Zel'dovich (tSZ) effect is a powerful probe of cosmology. The statistical errors in the tSZ power spectrum measurements are dominated by the presence of massive clusters in a survey volume that are easy to identify on…

宇宙学与河外天体物理 · 物理学 2021-03-10 Ken Osato , Masahiro Takada

Motivated by the observed shortfall of baryons in the local universe, we investigate the ability of high resolution cosmic microwave background (CMB) experiments to detect hot gas in the outer regions of nearby group halos. We construct hot…

天体物理学 · 物理学 2010-01-15 K. Moodley , R. Warne , N. Goheer , H. Trac

The relativistic Sunyaev-Zel'dovich (SZ) effect can be used to measure intracluster gas temperatures independently of X-ray spectroscopy. Here, we use the large-volume FLAMINGO simulation suite to determine whether SZ $y$-weighted…

宇宙学与河外天体物理 · 物理学 2024-04-15 Scott T. Kay , Joey Braspenning , Jens Chluba , John C. Helly , Roi Kugel , Matthieu Schaller , Joop Schaye

Energetic feedback processes associated with accreting supermassive black holes can expel gas from massive haloes and significantly alter various measures of clustering on ~Mpc scales, potentially biasing the values of cosmological…