中文
相关论文

相关论文: Detection of Hot Gas in Galaxy Groups via the Suny…

200 篇论文

We present the first results from a new generation of simulated large sky coverage (~100 square degrees) Sunyaev-Zeldovich effect (SZE) cluster surveys using the cosmological adaptive mesh refinement N-body/hydro code Enzo. We have…

We present a statistically-optimal and model-independent method to extract the pressure profile of hot gas in the intracluster medium (ICM). Using the thermal Sunyaev-Zeldovich effect, we constrain the mean pressure profile of the ICM by…

宇宙学与河外天体物理 · 物理学 2013-09-02 Siavash Aslanbeigi , Guilhem Lavaux , Amir Hajian , Niayesh Afshordi

We report the first investigation of cool-core properties of galaxy clusters selected via their Sunyaev--Zel'dovich (SZ) effect. We use 13 galaxy clusters uniformly selected from 178 deg^2 observed with the South Pole Telescope (SPT) and…

The Sunyaev-Zeldovich (SZ) effect has proven to be an extremely powerful tool to study the physical and evolutionary properties of rich clusters of galaxies. Upcoming SZ experiments, with their much improved sensitivity and angular…

天体物理学 · 物理学 2009-11-10 G. De Zotti , C. Burigana , A. Cavaliere , L. Danese , G. L. Granato , A. Lapi , P. Platania , L. Silva

The secondary anisotropies of the cosmic microwave background (CMB) provide a wealth of astrophysical and cosmological information. Pairing measurements of the CMB temperature map obtained by DR5 of the Atacama Cosmology Telescope (ACT)…

宇宙学与河外天体物理 · 物理学 2025-06-24 Boryana Hadzhiyska , Noah Sailer , Simone Ferraro

This paper presents detailed analysis of large-scale peculiar motions derived from a sample of ~ 700 X-ray clusters and cosmic microwave background (CMB) data obtained with WMAP. We use the kinematic Sunyaev-Zeldovich (KSZ) effect combining…

天体物理学 · 物理学 2011-02-11 A. Kashlinsky , F. Atrio-Barandela , D. Kocevski , H. Ebeling

We present the measurement of the kinematic Sunyaev-Zel'dovich (kSZ) effect in Fourier space, rather than in real space. We measure the density-weighted pairwise kSZ power spectrum, the first use of this promising approach, by…

宇宙学与河外天体物理 · 物理学 2018-02-27 Naonori S. Sugiyama , Teppei Okumura , David N. Spergel

If the gas in filaments and halos shares the same velocity field than the luminous matter, it will generate measurable temperature anisotropies due to the Kinematic Sunyaev-Zeldovich effect. We compute the distribution function of the KSZ…

天体物理学 · 物理学 2009-11-13 F. Atrio-Barandela , J. P. Muecket , R. Genova-Santos

We explore the significance of noise from thermal Sunyaev-Zel{'}dovich (tSZ) signals for cluster detection using cosmic microwave background (CMB) surveys. The noise arises both from neighboring objects and also from haloes below the…

宇宙学与河外天体物理 · 物理学 2022-03-30 Srinivasan Raghunathan

We critically analyze the measurement of galaxy cluster gas masses, which is central to cosmological studies that rely on the galaxy cluster gas mass fraction. Using synthetic observations of numerically simulated clusters viewed through…

天体物理学 · 物理学 2009-11-11 Eric J. Hallman , Patrick M. Motl , Jack O. Burns , Michael L. Norman

Upcoming millimeter experiments that probe the cosmic microwave background (CMB) will observe tens of thousands of galaxy clusters through the thermal Sunyaev-Zeldovich (tSZ) effect. tSZ selected clusters are powerful probes of cosmological…

宇宙学与河外天体物理 · 物理学 2019-10-02 Dylan Cromer , Nicholas Battaglia , Mathew S. Madhavacheril

We report on results of interferometric imaging of the Sunyaev-Zel'dovich Effect (SZE) with the OVRO and BIMA mm-arrays. Using low-noise cm-wave receivers on the arrays, we have obtained high quality images for 27 distant galaxy clusters.…

天体物理学 · 物理学 2009-10-31 J. E. Carlstrom , M. K. Joy , L. Grego , G. P. Holder , W. L. Holzapfel , J. J. Mohr , S. Patel , E. D. Reese

We investigate how strongly and at what scales the Sunyaev- Zel'dovich effect reflects the shifting balance between the two processes that compete for governing the density and the thermodynamic state of the hot intra-cluster medium…

天体物理学 · 物理学 2009-11-06 A. Cavaliere , N. Menci

We discuss non-Gaussian effects associated with the local large-scale structure contributions to the Cosmic Microwave Background (CMB) anisotropies through the thermal Sunyaev-Zel'dovich (SZ) effect. The non-Gaussianities associated with…

天体物理学 · 物理学 2009-11-06 Asantha Cooray

We report the first detection of the Sunyaev-Zel'dovich increment on the cosmic microwave background (CMB) at submillimetre wavelengths in the direction of a cluster of galaxies.It was achieved towards the rich cluster Abell 2163, using the…

The relativistic Sunyaev-Zel'dovich (SZ) effect offers a method, independent of X-ray, for measuring the temperature of the intracluster medium (ICM) in the hottest systems. Here, using N-body/hydrodynamic simulations of three galaxy…

天体物理学 · 物理学 2009-11-13 Scott T. Kay , Leila C. Powell , Andrew R. Liddle , Peter A. Thomas

We present a stacked lensing analysis of 96 galaxy clusters selected by the thermal Sunyaev-Zel'dovich (SZ) effect in maps of the cosmic microwave background (CMB). We select foreground galaxy clusters with a $5\sigma$-level SZ threshold in…

We present high-resolution hydrodynamical simulations of the degree and direction of polarisation imprinted on the CMB by the Sunyaev-Zel'dovich effect in the the line of sight to massive galaxy clusters. We focus on two contributions which…

天体物理学 · 物理学 2009-11-10 G. Lavaux , J. M. Diego , H. Mathis , J. Silk

The thermal Sunyaev-Zeldovich (SZ) effect serves as a direct potential probe of the energetic outflows from quasars that are responsible for heating the intergalactic medium. In this work, we use the GIZMO meshless finite mass hydrodynamic…

宇宙学与河外天体物理 · 物理学 2023-06-26 Avinanda Chakraborty , Suchetana Chatterjee , Mark Lacy , Soumya Roy , Samrat Roy , Rudrani Kar Chowdhury

Since its original formulation the Sunyaev-Zeldovich (SZ) effect has been recognized as a ``powerful laboratory'' for our comprehension of physical processes in cosmic structures and to derive crucial information on some general properties…

天体物理学 · 物理学 2009-06-23 Carlo Burigana