中文
相关论文

相关论文: Electrons Everywhere, All at Once: A Novel kSZ Est…

200 篇论文

We develop and test a new statistical method to measure the kinematic Sunyaev-Zel'dovich (kSZ) effect. A sample of independently detected clusters is combined with the cosmic flow field predicted from a galaxy redshift survey in order to…

宇宙学与河外天体物理 · 物理学 2014-11-11 Ming Li , Raul E. Angulo , Simon D. M. White , Jens Jasche

We report the direct detection of the kinetic Sunyaev-Zel'dovich (kSZ) effect in galaxy clusters with a 3.5 sigma significance level. The measurement was performed by stacking the Planck map at 217 GHz at the positions of galaxy clusters…

宇宙学与河外天体物理 · 物理学 2021-01-26 Hideki Tanimura , Saleem Zaroubi , Nabila Aghanim

Conventionally, in galaxy surveys, cosmological constraints on the growth and expansion history of the universe have been obtained from the measurements of redshift-space distortions and baryon acoustic oscillations embedded in the…

宇宙学与河外天体物理 · 物理学 2022-08-16 Teppei Okumura , Atsushi Taruya

We present the first detection of the cross-correlation angular power spectrum between the thermal Sunyaev-Zel'dovich (tSZ) effect and the X-ray emission over the full sky. The tSZ effect and X-rays are produced by the same hot gas within…

宇宙学与河外天体物理 · 物理学 2017-02-01 G. Hurier , M. Douspis , N. Aghanim , E. Pointecouteau , J. M. Diego , J. F. Macias-Perez

We study the prospects for extracting detailed statistical properties of the Sunyaev-Zel'dovich (SZ) effect associated with large scale structure using upcoming multifrequency CMB experiments. The greatest obstacle to detecting the…

天体物理学 · 物理学 2009-10-07 Asantha Cooray , Wayne Hu , Max Tegmark

We derive explicit, algebraic expressions for the steady-state number density of cosmic ray electrons as a function of position and energy using Green's function of the diffusion equation with energy losses for an axisymmetric distributions…

星系天体物理 · 物理学 2026-04-28 Anvar Shukurov , Charles Jose

We measure the kinetic Sunyaev-Zel'dovich (kSZ) signal through a joint analysis of the pairwise kSZ effect and galaxy clustering using CMASS galaxies and ACT DR6 maps. This approach breaks degeneracies between the optical depth and nuisance…

宇宙学与河外天体物理 · 物理学 2026-05-05 Shaohong Li , Yi Zheng

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…

It has been claimed that the standard model of cosmology (LCDM) cannot easily account for a number of observations on relatively small scales, motivating extensions to the standard model. Here we introduce a new suite of cosmological…

宇宙学与河外天体物理 · 物理学 2020-08-12 Sam G. Stafford , Shaun T. Brown , Ian G. McCarthy , Andreea S. Font , Andrew Robertson , Robert Poole-Mckenzie

We present a study of the spatial and redshift distributions of Sloan Digital Sky Survey (SDSS) galaxies toward the position of CrB-H, a very deep and extended decrement in the Cosmic Microwave Background (CMB), located within the Corona…

Reconstructing the galaxy peculiar velocity field from the distribution of large-scale structure plays an important role in cosmology. On one hand, it gives us an insight into structure formation and gravity; on the other, it allows us to…

宇宙学与河外天体物理 · 物理学 2023-12-20 Boryana Hadzhiyska , Simone Ferraro , Bernardita Ried Guachalla , Emmanuel Schaan

We review the observable consequences of the epoch of reionization (EoR) on the cosmic microwave background (CMB), and the resulting constraints on the EoR. We discuss how Thomson scattering with the free electrons produced during EoR…

宇宙学与河外天体物理 · 物理学 2016-01-27 Christian L. Reichardt

Aims: The enigma of the missing baryons poses a prominent and unresolved problem in astronomy. Dispersion measures (DM) serve as a distinctive observable of fast radio bursts (FRBs). They quantify the electron column density along each line…

The signatures from Sunyaev-Zeldovich effects and free-free emission in the intergalactic and intracluster medium and at galactic scales probe the structure evolution at various cosmic times. The detection of these sources and, possibly,…

天体物理学 · 物理学 2009-11-10 Carlo Burigana , Gianfranco De Zotti , Luigina Feretti

The thermal Sunyaev-Zel'dovich (tSZ) effect is one of the primary tools for finding and characterizing galaxy clusters. Several ground-based experiments are either underway or are being planned for mapping wide areas of the sky at $\sim…

宇宙学与河外天体物理 · 物理学 2020-03-24 Nikhel Gupta , Cristiano Porciani , Kaustuv Basu

The hot electrons in the intra-cluster medium produce a spectral distorsion of the cosmic microwave background (CMB) black body emission, the thermal Sunyaev-Zel'dovich effect (tSZ). This characteristic spectral distorsion is now commonly…

宇宙学与河外天体物理 · 物理学 2017-08-23 G. Hurier , C. Tchernin

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

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

We conduct a pseudo-$C_\ell$ analysis of the tomographic cross-correlation between 1000 deg$^2$ of weak lensing data from the Kilo-Degree Survey (KiDS-1000) and the thermal Sunyaev-Zeldovich (tSZ) effect measured by Planck and the Atacama…

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