The Atacama Cosmology Telescope: DR4 Maps and Cosmological Parameters
Creators: name: Aiola, Simone
name: Calabrese, Erminia
name: Maurin, Loïc
name: Naess, Sigurd
name: Schmitt, Benjamin L.
name: Abitbol, Maximilian H.
name: Addison, Graeme E.
name: Ade, Peter A. R.
name: Alonso, David
name: Amiri, Mandana
name: Amodeo, Stefania
name: Angile, Elio
name: Austermann, Jason E.
name: Baildon, Taylor
name: Battaglia, Nick
name: Beall, James A.
name: Bean, Rachel
name: Becker, Daniel T.
name: Bond, J Richard
name: Bruno, Sarah Marie
name: Calafut, Victoria
name: Campusano, Luis E.
name: Carrero, Felipe
name: Chesmore, Grace E.
name: Cho, Hsiao-mei
name: Choi, Steve K.
name: Clark, Susan E.
name: Cothard, Nicholas F.
name: Crichton, Devin
name: Crowley, Kevin T.
name: Darwish, Omar
name: Datta, Rahul
name: Denison, Edward V.
name: Devlin, Mark J.
name: Duell, Cody J.
name: Duff, Shannon M.
name: Duivenvoorden, Adriaan J.
name: Dunkley, Jo
name: Dünner, Rolando
name: Essinger-Hileman, Thomas
name: Fankhanel, Max
name: Ferraro, Simone
name: Fox, Anna E.
name: Fuzia, Brittany
name: Gallardo, Patricio A.
name: Gluscevic, Vera
name: Golec, Joseph E.
name: Grace, Emily
name: Gralla, Megan
name: Guan, Yilun
name: Hall, Kirsten
name: Halpern, Mark
name: Han, Dongwon
name: Hargrave, Peter
name: Hasselfield, Matthew
name: Helton, Jakob M.
name: Henderson, Shawn
name: Hensley, Brandon
name: Hill, J. Colin
name: Hilton, Gene C.
name: Hilton, Matt
name: Hincks, Adam D.
name: Hložek, Renée
name: Ho, Shuay-Pwu Patty
name: Hubmayr, Johannes
name: Huffenberger, Kevin M.
name: Hughes, John P.
name: Infante, Leopoldo
name: Irwin, Kent
name: Jackson, Rebecca
name: Klein, Jeff
name: Knowles, Kenda
name: Koopman, Brian
name: Kosowsky, Arthur
name: Lakey, Victoria
name: Li, Dale
name: Li, Yaqiong
name: Li, Zack
name: Lokken, Martine
name: Louis, Thibaut
name: Lungu, Marius
name: MacInnis, Amanda
name: Madhavacheril, Mathew
name: Maldonado, Felipe
name: Mallaby-Kay, Maya
name: Marsden, Danica
name: McMahon, Jeff
name: Menanteau, Felipe
name: Moodley, Kavilan
name: Morton, Tim
name: Namikawa, Toshiya
name: Nati, Federico
name: Newburgh, Laura
name: Nibarger, John P.
name: Nicola, Andrina
name: Niemack, Michael D.
name: Nolta, Michael R.
name: Orlowski-Sherer, John
name: Page, Lyman A.
name: Pappas, Christine G.
name: Partridge, Bruce
name: Phakathi, Phumlani
name: Pisano, Giampaolo
name: Prince, Heather
name: Puddu, Roberto
name: Qu, Frank J.
name: Rivera, Jesus
name: Robertson, Naomi
name: Rojas, Felipe
name: Salatino, Maria
name: Schaan, Emmanuel
name: Schillaci, Alessandro
name: Sehgal, Neelima
name: Sherwin, Blake D.
name: Sierra, Carlos
name: Sievers, Jon
name: Sifon, Cristobal
name: Sikhosana, Precious
name: Simon, Sara
name: Spergel, David N.
name: Staggs, Suzanne T.
name: Stevens, Jason
name: Storer, Emilie
name: Sunder, Dhaneshwar D.
name: Switzer, Eric R.
name: Thorne, Ben
name: Thornton, Robert
name: Trac, Hy
name: Treu, Jesse
name: Tucker, Carole
name: Vale, Leila R.
name: Van Engelen, Alexander
name: Van Lanen, Jeff
name: Vavagiakis, Eve M.
name: Wagoner, Kasey
name: Wang, Yuhan
name: Ward, Jonathan T.
name: Wollack, Edward J.
name: Xu, Zhilei
name: Zago, Fernando
name: Zhu, Ningfeng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present new arcminute-resolution maps of the Cosmic Microwave Background temperature and polarization anisotropy from the Atacama Cosmology Telescope, using data taken from 2013-2016 at 98 and 150 GHz. The maps cover more than 17,000 deg$^2$, the deepest 600 deg$^2$ with noise levels below 10 $μ$K-arcmin. We use the power spectrum derived from almost 6,000 deg$^2$ of these maps to constrain cosmology. The ACT data enable a measurement of the angular scale of features in both the divergence-like polarization and the temperature anisotropy, tracing both the velocity and density at last-scattering. From these one can derive the distance to the last-scattering surface and thus infer the local expansion rate, $H_0$. By combining ACT data with large-scale information from WMAP we measure $H_0 = 67.6 \pm 1.1$ km/s/Mpc, at 68% confidence, in excellent agreement with the independently-measured Planck satellite estimate (from ACT alone we find $H_0 = 67.9 \pm 1.5$ km/s/Mpc). The $Λ$CDM model provides a good fit to the ACT data, and we find no evidence for deviations: both the spatial curvature, and the departure from the standard lensing signal in the spectrum, are zero to within 1$σ$; the number of relativistic species, the primordial Helium fraction, and the running of the spectral index are consistent with $Λ$CDM predictions to within $1.5 - 2.2σ$. We compare ACT, WMAP, and Planck at the parameter level and find good consistency; we investigate how the constraints on the correlated spectral index and baryon density parameters readjust when adding CMB large-scale information that ACT does not measure. The DR4 products presented here will be publicly released on the NASA Legacy Archive for Microwave Background Data Analysis.
description: 33 pages, 24 figures, products available on the NASA LAMBDA website, version accepted for publication in JCAP