The Atacama Cosmology Telescope: A Measurement of the Cosmic Microwave Background Power Spectra at 98 and 150 GHz
Creators: name: Choi, Steve K.
name: Hasselfield, Matthew
name: Ho, Shuay-Pwu Patty
name: Koopman, Brian
name: Lungu, Marius
name: Abitbol, Maximilian H.
name: Addison, Graeme E.
name: Ade, Peter A. R.
name: Aiola, Simone
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: Calabrese, Erminia
name: Calafut, Victoria
name: Campusano, Luis E.
name: Carrero, Felipe
name: Chesmore, Grace E.
name: Cho, Hsiao-mei
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: Henderson, Shawn
name: Hensley, Brandon
name: Hill, J. Colin
name: Hilton, Gene C.
name: Hilton, Matt
name: Hincks, Adam D.
name: Hložek, Renée
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: Kosowsky, Arthur
name: Lakey, Victoria
name: Li, Dale
name: Li, Yaqiong
name: Li, Zack
name: Lokken, Martine
name: Louis, Thibaut
name: MacInnis, Amanda
name: Madhavacheril, Mathew
name: Maldonado, Felipe
name: Mallaby-Kay, Maya
name: Marsden, Danica
name: Maurin, Loïc
name: McMahon, Jeff
name: Menanteau, Felipe
name: Moodley, Kavilan
name: Morton, Tim
name: Naess, Sigurd
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: 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: Schmitt, Benjamin L.
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 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 $&gt;$15000 deg$^2$ at 98 and 150 GHz. For this analysis we adopt a blinding strategy to help avoid confirmation bias and, related to this, show numerous checks for systematic error done before unblinding. Using the likelihood for the cosmological analysis we constrain secondary sources of anisotropy and foreground emission, and derive a "CMB-only" spectrum that extends to $\ell=4000$. At large angular scales, foreground emission at 150 GHz is $\sim$1% of TT and EE within our selected regions and consistent with that found by Planck. Using the same likelihood, we obtain the cosmological parameters for $Λ$CDM for the ACT data alone with a prior on the optical depth of $τ=0.065\pm0.015$. $Λ$CDM is a good fit. The best-fit model has a reduced $χ^2$ of 1.07 (PTE=0.07) with $H_0=67.9\pm1.5$ km/s/Mpc. We show that the lensing BB signal is consistent with $Λ$CDM and limit the celestial EB polarization angle to $ψ_P =-0.07^{\circ}\pm0.09^{\circ}$. We directly cross correlate ACT with Planck and observe generally good agreement but with some discrepancies in TE. All data on which this analysis is based will be publicly released.
description: 44 pages, 27 figures, products available on the NASA LAMBDA website, version accepted for publication in JCAP