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Open AccessJournal ArticleDOI

Optical design of the Atacama Cosmology Telescope and the Millimeter Bolometric Array Camera

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TLDR
The Atacama Cosmology Telescope is a 6 m telescope designed to map the cosmic microwave background simultaneously at 145, 215, and 280 GHz with arcminute resolution, and each frequency will have a 32 by 32 element focal plane array of transition edge sensor bolometers.
Abstract
The Atacama Cosmology Telescope is a 6 m telescope designed to map the cosmic microwave background simultaneously at 145, 215, and 280 GHz with arcminute resolution. Each frequency will have a 32 by 32 element focal plane array of transition edge sensor bolometers. The telescope and the cold reimaging optics are optimized for millimeter-wave observations with these sensitive detectors. The design of each is described.

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Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: cosmological implications from two decades of spectroscopic surveys at the Apache Point Observatory

Shadab Alam, +105 more
- 28 Apr 2021 - 
TL;DR: In this article, the authors present the cosmological implications from final measurements of clustering using galaxies, quasars, and Lyα forests from the completed SDSS lineage of experiments in large-scale structure.
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The MCXC: a meta-catalogue of x-ray detected clusters of galaxies

TL;DR: The MCXC the authors is a meta-catalog of X-ray detected clusters of galaxies, which is based on publicly available ROSAT All Sky Survey-based (NORAS, the authorsLEX, BCS, SGP, NEP, MACS, and CIZA) and serendipitous (160SD, 400SD, SHARC, WARPS, and EMSS) cluster catalogues.
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CMB-S4 Science Case, Reference Design, and Project Plan

Kevork N. Abazajian, +224 more
TL;DR: In this article, the authors present the science case, reference design, and project plan for the Stage-4 ground-based cosmic microwave background experiment CMB-S4, as well as the experimental data.
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Galaxy clusters selected with the sunyaev-zel'dovich effect from 2008 south pole telescope observations

TL;DR: A detection-significance-limited catalog of 21 Sunyaev-Zel'dovich-selected galaxy clusters is presented in this paper. But it is not a complete catalog.
Journal ArticleDOI

The Atacama Cosmology Telescope: Sunyaev-Zel'dovich-Selected Galaxy Clusters at 148 GHz in the 2008 Survey

Tobias A. Marriage, +88 more
TL;DR: In this paper, the authors report on 23 clusters detected blindly as Sunyaev-Zel'DOVICH (SZ) decrements in a 148 GHz, 455 deg2 map of the southern sky made with data from the Atacama Cosmology Telescope 2008 observing season.
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Journal ArticleDOI

First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results

Abstract: We present full sky microwave maps in five bands (23 to 94 GHz) from the WMAP first year sky survey. Calibration errors are 1 per mode to l=658. The temperature-polarization cross-power spectrum reveals both acoustic features and a large angle correlation from reionization. The optical depth of reionization is 0.17 +/- 0.04, which implies a reionization epoch of 180+220-80 Myr (95% CL) after the Big Bang at a redshift of 20+10-9 (95% CL) for a range of ionization scenarios. This early reionization is incompatible with the presence of a significant warm dark matter density. The age of the best-fit universe is 13.7 +/- 0.2 Gyr old. Decoupling was 379+8-7 kyr after the Big Bang at a redshift of 1089 +/- 1. The thickness of the decoupling surface was dz=195 +/- 2. The matter density is Omega_m h^2 = 0.135 +0.008 -0.009, the baryon density is Omega_b h^2 = 0.0224 +/- 0.0009, and the total mass-energy of the universe is Omega_tot = 1.02 +/- 0.02. The spectral index of scalar fluctuations is fit as n_s = 0.93 +/- 0.03 at wavenumber k_0 = 0.05 Mpc^-1, with a running index slope of dn_s/d ln k = -0.031 +0.016 -0.018 in the best-fit model. This flat universe model is composed of 4.4% baryons, 22% dark matter and 73% dark energy. The dark energy equation of state is limited to w<-0.78 (95% CL). Inflation theory is supported with n_s~1, Omega_tot~1, Gaussian random phases of the CMB anisotropy, and superhorizon fluctuations. An admixture of isocurvature modes does not improve the fit. The tensor-to-scalar ratio is r(k_0=0.002 Mpc^-1)<0.90 (95% CL).

Principles of Optics (7th Ed)

Max Born, +1 more
Journal ArticleDOI

Cosmology with the Sunyaev-Zel'dovich Effect

TL;DR: The Sunyaev-Zel'dovich effect (SZE) provides a unique way to map the large-scale structure of the universe as traced by massive clusters of galaxies as mentioned in this paper.
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