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We use a temperature map of the cosmic microwave background (CMB) obtained using the South Pole Telescope at 150 GHz to construct a map of the gravitational convergence to z ~ 1100, revealing the fluctuations in the projected mass density.…

We report upper limits on the polarization of the CMBR as measured with the Cosmic Background Imager, a 13 element interferometer that operates in the 26-36 GHz band and is sited on Llano de Chajnantor in northern Chile. The array consists…

We present measurements of the power spectra of cosmic infrared background (CIB) and cosmic microwave background (CMB) fluctuations in six frequency bands. Maps at the lower three frequency bands, 95, 150, and 220 GHz (3330, 2000, 1360…

We present a measurement of the angular power spectrum of the cosmic microwave background (CMB) using data from the South Pole Telescope (SPT). The data consist of 790 square degrees of sky observed at 150 GHz during 2008 and 2009. Here we…

The POLARBEAR-2/Simons Array Cosmic Microwave Background (CMB) polarization experiment is an upgrade and expansion of the existing POLARBEAR-1 (PB-1) experiment, located in the Atacama desert in Chile. Along with the CMB temperature and…

Instrumentation and Methods for Astrophysics · Physics 2018-06-15 Logan Howe , Calvin Tsai , Lindsay Lowry , Kam Arnold , Gabriele Coppi , John Groh , Xiaoyu Guo , Brian Keating , Adrian Lee , Andrew J. May , Lucio Piccirillo , Nathan Stebor , Grant Teply

This document describes the Millimeter Anisotropy eXperiment IMaging Array (MAXIMA), a balloon-borne experiment measuring the temperature anisotropy of the Cosmic Microwave Background (CMB) on angular scales of 10 arcminutes to 5 degrees.…

Astrophysics · Physics 2011-11-09 Bahman Rabii

The six-meter Atacama Cosmology Telescope (ACT) in Chile was built to measure the cosmic microwave background (CMB) at arcminute angular scales. We are building a new polarization sensitive receiver for ACT (ACTPol). ACTPol will…

Design and performance details are given for the Cosmic Background Imager (CBI), an interferometer array that is measuring the power spectrum of fluctuations in the cosmic microwave background radiation (CMBR) for multipoles in the range…

Knowledge of the beam profiles is of critical importance for interpreting data from cosmic microwave background experiments. In this paper, we present the characterization of the in-flight optical response of the WMAP satellite. The main…

We report on a measurement of the angular spectrum of the CMB between $l\approx 100$ and $l\approx 400$ made at 144 GHz from Cerro Toco in the Chilean altiplano. When the new data are combined with previous data at 30 and 40 GHz, taken with…

LiteBIRD is a space-borne experiment dedicated to detecting large-scale $B$-mode anisotropies in the linear polarization of the Cosmic Microwave Background (CMB) predicted by the theory of inflation. It is planned to be launched in the late…

Instrumentation and Methods for Astrophysics · Physics 2022-09-27 Mayu Tominaga , Masahiro Tsujimoto , Graeme Smecher , Hirokazu Ishino

We report the first measurements of anisotropy in the cosmic microwave background (CMB) radiation with the Arcminute Cosmology Bolometer Array Receiver (ACBAR). The instrument was installed on the 2.1m Viper telescope at the South Pole in…

We describe observations at frequencies near 15 GHz of the second 2x2 degree field imaged with the Cambridge Cosmic Anisotropy Telescope (CAT). After the removal of discrete radio sources, structure is detected in the images on…

The study of cosmic birefringence through Cosmic Microwave Background (CMB) experiments is a key research area in cosmology and particle physics, providing a critical test for Lorentz and CPT symmetries. This paper focuses on an upcoming…

Cosmology and Nongalactic Astrophysics · Physics 2025-04-18 Yiwei Zhong , Hongbo Cai , Si-Yu Li , Yang Liu , Mingzhe Li , Wenjuan Fang

A major goal of upcoming experiments measuring the Cosmic Microwave Background Radiation (CMBR) is to reveal the subtle signature of inflation in the polarization pattern which requires unprecedented sensitivity and control of systematics.…

Astrophysics · Physics 2019-08-13 Dorothea Samtleben

We present the temperature and polarization angular power spectra of the CMB measured by the Atacama Cosmology Telescope (ACT) from 5400 deg$^2$ of the 2013-2016 survey, which covers $>$15000 deg$^2$ at 98 and 150 GHz. For this analysis we…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-18 Steve K. Choi , Matthew Hasselfield , Shuay-Pwu Patty Ho , Brian Koopman , Marius Lungu , Maximilian H. Abitbol , Graeme E. Addison , Peter A. R. Ade , Simone Aiola , David Alonso , Mandana Amiri , Stefania Amodeo , Elio Angile , Jason E. Austermann , Taylor Baildon , Nick Battaglia , James A. Beall , Rachel Bean , Daniel T. Becker , J Richard Bond , Sarah Marie Bruno , Erminia Calabrese , Victoria Calafut , Luis E. Campusano , Felipe Carrero , Grace E. Chesmore , Hsiao-mei Cho , Susan E. Clark , Nicholas F. Cothard , Devin Crichton , Kevin T. Crowley , Omar Darwish , Rahul Datta , Edward V. Denison , Mark J. Devlin , Cody J. Duell , Shannon M. Duff , Adriaan J. Duivenvoorden , Jo Dunkley , Rolando Dünner , Thomas Essinger-Hileman , Max Fankhanel , Simone Ferraro , Anna E. Fox , Brittany Fuzia , Patricio A. Gallardo , Vera Gluscevic , Joseph E. Golec , Emily Grace , Megan Gralla , Yilun Guan , Kirsten Hall , Mark Halpern , Dongwon Han , Peter Hargrave , Shawn Henderson , Brandon Hensley , J. Colin Hill , Gene C. Hilton , Matt Hilton , Adam D. Hincks , Renée Hložek , Johannes Hubmayr , Kevin M. Huffenberger , John P. Hughes , Leopoldo Infante , Kent Irwin , Rebecca Jackson , Jeff Klein , Kenda Knowles , Arthur Kosowsky , Victoria Lakey , Dale Li , Yaqiong Li , Zack Li , Martine Lokken , Thibaut Louis , Amanda MacInnis , Mathew Madhavacheril , Felipe Maldonado , Maya Mallaby-Kay , Danica Marsden , Loïc Maurin , Jeff McMahon , Felipe Menanteau , Kavilan Moodley , Tim Morton , Sigurd Naess , Toshiya Namikawa , Federico Nati , Laura Newburgh , John P. Nibarger , Andrina Nicola , Michael D. Niemack , Michael R. Nolta , John Orlowski-Sherer , Lyman A. Page , Christine G. Pappas , Bruce Partridge , Phumlani Phakathi , Heather Prince , Roberto Puddu , Frank J. Qu , Jesus Rivera , Naomi Robertson , Felipe Rojas , Maria Salatino , Emmanuel Schaan , Alessandro Schillaci , Benjamin L. Schmitt , Neelima Sehgal , Blake D. Sherwin , Carlos Sierra , Jon Sievers , Cristobal Sifon , Precious Sikhosana , Sara Simon , David N. Spergel , Suzanne T. Staggs , Jason Stevens , Emilie Storer , Dhaneshwar D. Sunder , Eric R. Switzer , Ben Thorne , Robert Thornton , Hy Trac , Jesse Treu , Carole Tucker , Leila R. Vale , Alexander Van Engelen , Jeff Van Lanen , Eve M. Vavagiakis , Kasey Wagoner , Yuhan Wang , Jonathan T. Ward , Edward J. Wollack , Zhilei Xu , Fernando Zago , Ningfeng Zhu

We describe the QUaD experiment, a millimeter-wavelength polarimeter designed to observe the Cosmic Microwave Background (CMB) from a site at the South Pole. The experiment comprises a 2.64 m Cassegrain telescope equipped with a…

The highly sensitive millimeter-wave telescope is an important tool for accurate measurement of Cosmic Microwave Background (CMB) radiation, and its core component is a detector array located in a cryogenic focal plane. The feasibility of…

Instrumentation and Methods for Astrophysics · Physics 2024-01-29 Ye Chai , Shibo Shu , Yongping Li , Jiamin Sun , Zhouhui Liu , Yu Xu , Daikang Yan , Zhengwei Li , Yang Liu , Yiwen Wang , Weijie Guo , Juexian Cao , Congzhan Liu