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The complex processes of baryonic feedback associated with galaxy evolution are still poorly understood, and their impact on the clustering of matter on small scales remains difficult to quantify. While many fitting functions and emulators…

宇宙学与河外天体物理 · 物理学 2025-11-26 Alex Laguë , Mathew S. Madhavacheril , Josh Borrow , Kendrick M. Smith , Xinyi Chen , Matthieu Schaller , Joop Schaye

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

Observable thermodynamical properties of the intracluster medium (ICM) reflect the complex interplay between AGN feedback and the gravitational collapse of haloes. Using the large volume TNG300 simulation of the IllustrisTNG project we…

Stacking cosmic microwave background (CMB) maps around known galaxy clusters and groups provides a powerful probe of the distribution of hot gas in these systems via the Sunyaev-Zel'dovich (SZ) effect. A stacking analysis allows one to…

宇宙学与河外天体物理 · 物理学 2017-01-18 Vinu Vikram , Adam Lidz , Bhuvnesh Jain

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…

宇宙学与河外天体物理 · 物理学 2015-05-30 N. Battaglia , J. R. Bond , C. Pfrommer , J. L. Sievers

Compton scattering of the cosmic microwave background (CMB) from hot ionized gas produces a range of effects, and the leading order effects are the kinetic and thermal Sunyaev Zel'dovich (kSZ and tSZ) effects. In the near future, CMB…

宇宙学与河外天体物理 · 物理学 2020-09-16 William R. Coulton , Atsuhisa Ota , Alexander van Engelen

We propose the use of the kinetic Sunyaev-Zel'dovich (kSZ) effect to probe the circumgalactic medium (CGM), with the aid of a spectroscopic survey covering the same area of a SZ survey. One can design an optimal estimator of the kSZ effect…

宇宙学与河外天体物理 · 物理学 2016-03-23 Jiawei Shao , Taotao Fang

The two dimensional structure of hot gas in galaxy clusters contains information about the hydrodynamical state of the cluster, which can be used to understand the origin of scatter in the thermodynamical properties of the gas, and to…

宇宙学与河外天体物理 · 物理学 2015-05-14 A. Finoguenov , A. J. R. Sanderson , J. J. Mohr , J. J. Bialek , A. Evrard

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…

宇宙学与河外天体物理 · 物理学 2015-05-28 D. A. Prokhorov , S. Colafrancesco , T. Akahori , E. T. Million , S. Nagataki , K. Yoshikawa

Observations of the kinetic Sunyaev-Zel'dovich (kSZ) effect measure the density-weighted velocity field, a potentially powerful cosmological probe. This paper presents an analytical method to predict the power spectrum and two-point…

宇宙学与河外天体物理 · 物理学 2016-07-14 Naonori S. Sugiyama , Teppei Okumura , David N. Spergel

We use the cosmo-OWLS suite of cosmological hydrodynamical simulations, which includes different galactic feedback models, to predict the cross-correlation signal between weak gravitational lensing and the thermal Sunyaev-Zeldovich (tSZ)…

We use combined South Pole Telescope (SPT)+Planck temperature maps to analyze the circumgalactic medium (CGM) encompassing 138,235 massive, quiescent 0.5 $\leq$ z $\leq$ 1.5 galaxies selected from data from the Dark Energy Survey (DES) and…

宇宙学与河外天体物理 · 物理学 2023-06-21 Jeremy Meinke , Kathrin Böckmann , Seth Cohen , Philip Mauskopf , Evan Scannapieco , Richard Sarmento , Emily Lunde , J'Neil Cottle

The complete characterization of the pressure profile of high-redshift galaxy clusters, from their core to their outskirts, is a major issue for the study of the formation of large-scale structures. It is essential to constrain a potential…

The kinematic Sunyaev-Zel'dovich (kSZ) effect -- the Doppler boosting of cosmic microwave background (CMB) photons scattering off free electrons with non-zero line-of-sight velocity -- is an excellent probe of the distribution of baryons in…

宇宙学与河外天体物理 · 物理学 2021-08-25 Aleksandra Kusiak , Boris Bolliet , Simone Ferraro , J. Colin Hill , Alex Krolewski

We investigate the possibility of detecting the turbulent state of the IGM with the kinetic Sunyaev-Zel'dovich (kSZ) effect. Being sensitive to the divergence-free component of the momentum field of the IGM, the kSZ effect might be used to…

宇宙学与河外天体物理 · 物理学 2015-05-28 Weishan Zhu , Long-Long Feng , Li-Zhi Fang

We present templates for the Sunyaev-Zel'dovich (SZ) angular power spectrum based on four models for the nonlinear gas distribution. The frequency-dependent SZ temperature fluctuations, with thermal (TSZ) and kinetic (KSZ) contributions,…

宇宙学与河外天体物理 · 物理学 2015-05-19 Hy Trac , Paul Bode , Jeremiah P. Ostriker

The kinematic Sunyaev-Zel'dovich (kSZ) effect in the cosmic microwave background (CMB) is a powerful probe of gas physics and large-scale structure (LSS) in our universe. We consider the "projected-field" kSZ estimator, which involves…

宇宙学与河外天体物理 · 物理学 2026-05-21 Michael Jacob Rodriguez , Aleksandra Kusiak , Shivam Pandey , J. Colin Hill

We have imaged the Sunyaev-Zel'dovich (SZ) effect signals at 140 and 270 GHz towards ten galaxy clusters with Bolocam and AzTEC/ASTE. We also used Planck data to constrain the signal at large angular scales, Herschel-SPIRE images to…

New generation ground and space-based CMB experiments have ushered in discoveries of massive galaxy clusters via the Sunyaev-Zeldovich (SZ) effect, providing a new window for studying cluster astrophysics and cosmology. Many of the newly…

宇宙学与河外天体物理 · 物理学 2015-06-05 Jens Chluba , Daisuke Nagai , Sergey Sazonov , Kaylea Nelson