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The Atacama Cosmology Telescope: Two-season ACTPol Extragalactic Point Sources and their Polarization properties
Rahul Datta, Simone Aiola, Steve K. Choi +30
We report on measurements of the polarization of extragalactic sources at 148 GHz made during the first two seasons of the Atacama Cosmology Telescope Polarization (ACTPol) survey.…
Measurement of the Splashback Feature around SZ-selected Galaxy Clusters with DES, SPT and ACT
T. Shin, S. Adhikari, E. J. Baxter +107
We present a detection of the splashback feature around galaxy clusters selected using their Sunyaev-Zel'dovich (SZ) signal. Recent measurements of the splashback feature around op…
Development of Calibration Strategies for the Simons Observatory
Sean A. Bryan, Sara M. Simon, Martina Gerbino +19
The Simons Observatory (SO) is a set of cosmic microwave background instruments that will be deployed in the Atacama Desert in Chile. The key science goals include setting new cons…
Studies of Systematic Uncertainties for Simons Observatory: Detector Array Effects
Kevin T. Crowley, Sara M. Simon, Max Silva-Feaver +36
In this proceeding, we present studies of instrumental systematic effects for the Simons Obsevatory (SO) that are associated with the detector system and its interaction with the f…
Simons Observatory Large Aperture Telescope Receiver Design Overview
Ningfeng Zhu, John L. Orlowski-Scherer, Zhilei Xu +31
The Simons Observatory (SO) will make precision temperature and polarization measurements of the cosmic microwave background (CMB) using a series of telescopes which will cover ang…
Cooldown Strategies and Transient Thermal Simulations for the Simons Observatory
Gabriele Coppi, Zhilei Xu, Aamir Ali +19
The Simons Observatory (SO) will provide precision polarimetry of the cosmic microwave background (CMB) using a series of telescopes which will cover angular scales from arc-minute…
Simons Observatory large aperture receiver simulation overview
John L. Orlowski-Scherer, Ningfeng Zhu, Zhilei Xu +22
The Simons Observatory (SO) will make precision temperature and polarization measurements of the cosmic microwave background (CMB) using a series of telescopes which will cover ang…
Studies of Systematic Uncertainties for Simons Observatory: Optical Effects and Sensitivity Considerations
Patricio A. Gallardo, Jon Gudmundsson, Brian J. Koopman +32
The Simons Observatory (SO) is a new experiment that aims to measure the cosmic microwave background (CMB) in temperature and polarization. SO will measure the polarized sky over a…
Designs for next generation CMB survey strategies from Chile
Jason R. Stevens, Neil Goeckner-Wald, Reijo Keskitalo +20
New telescopes are being built to measure the Cosmic Microwave Background (CMB) with unprecedented sensitivity, including Simons Observatory (SO), CCAT-prime, the BICEP Array, SPT-…
Far Sidelobes from Baffles and Telescope Support Structures in the Atacama Cosmology Telescope
Patricio A. Gallardo, Nicholas F. Cothard, Roberto Puddu +5
The Atacama Cosmology Telescope (ACT) is a 6 m telescope located in the Atacama Desert, designed to measure the cosmic microwave background (CMB) with arcminute resolution. ACT, wi…
The Simons Observatory: Instrument Overview
Nicholas Galitzki, Aamir Ali, Kam S. Arnold +75
The Simons Observatory (SO) will make precise temperature and polarization measurements of the cosmic microwave background (CMB) using a set of telescopes which will cover angular…
The Simons Observatory: Science goals and forecasts
The Simons Observatory Collaboration, Peter Ade, James Aguirre +247
The Simons Observatory (SO) is a new cosmic microwave background experiment being built on Cerro Toco in Chile, due to begin observations in the early 2020s. We describe the scient…
Cold optical design for the Large Aperture Simons Observatory telescope
S. R. Dicker, P. A. Gallardo, J. E Gudmundsson +26
The Simons Observatory will consist of a single large (6 m diameter) telescope and a number of smaller (0.5 m diameter) refracting telescopes designed to measure the polarization o…
Advanced ACTPol TES Device Parameters and Noise Performance in Fielded Arrays
Kevin T. Crowley, Jason E. Austermann, Steve K. Choi +14
The Advanced ACTPol (AdvACT) upgrade to the Atacama Cosmology Telescope (ACT) features arrays of aluminum manganese transition-edge sensors (TESes) optimized for ground-based obser…
The optical design of the six-meter CCAT-prime and Simons Observatory telescopes
Stephen C. Parshley, Michael D. Niemack, Richard Hills +13
A common optical design for a coma-corrected, 6-meter aperture, crossed-Dragone telescope has been adopted for the CCAT-prime telescope of CCAT Observatory, Inc., and for the Large…
CCAT-prime: a novel telescope for submillimeter astronomy
Stephen C. Parshley, Jörg Kronshage, James Blair +28
The CCAT-prime telescope is a 6-meter aperture, crossed-Dragone telescope, designed for millimeter and sub-millimeter wavelength observations. It will be located at an altitude of…
Optimizing the Efficiency of Fabry-Perot Interferometers with Silicon-Substrate Mirrors
Nicholas F. Cothard, Mahiro Abe, Thomas Nikola +8
We present the novel design of microfabricated, silicon-substrate based mirrors for use in cryogenic Fabry-Perot Interferometers (FPIs) for the mid-IR to sub-mm/mm wavelength regim…
The Atacama Cosmology Telescope: CO(J = 3 - 2) mapping and lens modeling of an ACT-selected dusty star-forming galaxy
J. Rivera, A. J. Baker, P. A. Gallardo +13
We report Northern Extended Millimeter Array (NOEMA) CO() observations of the dusty star-forming galaxy ACT-S\,J020941+001557 at , which was detected as an u…
Prime-Cam: A first-light instrument for the CCAT-prime telescope
Eve M. Vavagiakis, Zeeshan Ahmed, Aamir Ali +43
CCAT-prime will be a 6-meter aperture telescope operating from sub-mm to mm wavelengths, located at 5600 meters elevation on Cerro Chajnantor in the Atacama Desert in Chile. Its no…
GMRT 610 MHz observations of galaxy clusters in the ACT equatorial sample
Kenda Knowles, Andrew J. Baker, J. Richard Bond +11
We present Giant Metrewave Radio Telescope 610 MHz observations of 14 Atacama Cosmology Telescope (ACT) clusters, including new data for nine. The sample includes 73\% of ACT equat…
BoloCalc: a sensitivity calculator for the design of Simons Observatory
Charles A. Hill, Sarah Marie M. Bruno, Sara M. Simon +34
The Simons Observatory (SO) is an upcoming experiment that will study temperature and polarization fluctuations in the cosmic microwave background (CMB) from the Atacama Desert in…
Weak-Lensing Mass Calibration of ACTPol Sunyaev-Zel'dovich Clusters with the Hyper Suprime-Cam Survey
Hironao Miyatake, Nicholas Battaglia, Matt Hilton +57
We present weak-lensing measurements using the first-year data from the Hyper Suprime-Cam Strategic Survey Program on the Subaru telescope for eight galaxy clusters selected throug…
The LABOCA/ACT Survey of Clusters at All Redshifts: multi-wavelength analysis of background submillimeter galaxies
Paula Aguirre, Robert R. Lindner, Andrew J. Baker +11
We present a multi-wavelength analysis of 48 submillimeter galaxies (SMGs) detected in the LABOCA/ACT Survey of Clusters at All Redshifts, LASCAR, which acquired new 870 m and A…
Results from the Atacama B-mode Search (ABS) Experiment
Akito Kusaka, John Appel, Thomas Essinger-Hileman +25
The Atacama B-mode Search (ABS) is an experiment designed to measure cosmic microwave background (CMB) polarization at large angular scales (). It operated from the ACT si…