activity
20232026
most citedThe Atacama Cosmology Telescope: Quantifying Atmospheric Emission above Cerro Toco

3 citations · 5 across the 6 of their papers we have counts for

collaborators

7 papers

astro-ph.CO2026

Improved Constraints on Cosmic Microwave Background Circular Polarization with CLASS

Thomas Essinger-Hileman, Caleigh Ryan, Yunyang Li +25

We present improved constraints on circular polarization in the cosmic microwave background (CMB) from the Cosmology Large Angular Scale Surveyor (CLASS) experiment using data at 9…

astro-ph.CO2025

A Measurement of the Largest-Scale CMB E-mode Polarization with CLASS

Yunyang Li, Joseph Eimer, John Appel +34

We present measurements of large-scale cosmic microwave background (CMB) E-mode polarization from the Cosmology Large Angular Scale Surveyor (CLASS) 90 GHz data. Using 115 det-yr o…

astro-ph.IM2024★ 1 cited

High-Efficiency and Low-Noise Detectors for the Upgraded CLASS 90 GHz Focal Plane

Carolina Núñez, John W. Appel, Rahul Datta +22

We present the in-lab and on-sky performance for the upgraded 90 GHz focal plane of the Cosmology Large Angular Scale Surveyor (CLASS), which had four of its seven detector wafers…

astro-ph.IM2024★ 3 cited

The Atacama Cosmology Telescope: Quantifying Atmospheric Emission above Cerro Toco

Thomas W. Morris, Elia Battistelli, Ricardo Bustos +17

At frequencies below 1 Hz, fluctuations in atmospheric emission in the Chajnantor region in northern Chile are the primary source of interference for bolometric millimeter-wave obs…

astro-ph.CO2024

Sensitivity-Improved Polarization Maps at 40 GHz with CLASS and WMAP data

Rui Shi, John W. Appel, Charles L. Bennett +18

Improved polarization measurements at frequencies below 70 GHz with degree-level angular resolution are crucial for advancing our understanding of the Galactic synchrotron radiatio…

astro-ph.IM2023

CLASS Observations of Atmospheric Cloud Polarization at Millimeter Wavelengths

Yunyang Li, John W. Appel, Charles L. Bennett +21

The dynamic atmosphere imposes challenges to ground-based cosmic microwave background observation, especially for measurements on large angular scales. The hydrometeors in the atmo…

astro-ph.CO2023★ 1 cited

CLASS Angular Power Spectra and Map-Component Analysis for 40 GHz Observations through 2022

Joseph R. Eimer, Yunyang Li, Michael K. Brewer +31

Measurement of the largest angular scale () features of the cosmic microwave background (CMB) polarization is a powerful way to constrain the optical depth to reionizati…