The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and Its Implications for Structure Growth

Author:

Qu Frank J.,Sherwin Blake D.,Madhavacheril Mathew S.ORCID,Han Dongwon,Crowley Kevin T.,Abril-Cabezas IreneORCID,Ade Peter A. R.,Aiola SimoneORCID,Alford Tommy,Amiri Mandana,Amodeo Stefania,An Rui,Atkins Zachary,Austermann Jason E.ORCID,Battaglia NicholasORCID,Battistelli Elia StefanoORCID,Beall James A.,Bean Rachel,Beringue Benjamin,Bhandarkar TanayORCID,Biermann Emily,Bolliet Boris,Bond J Richard,Cai Hongbo,Calabrese Erminia,Calafut Victoria,Capalbo Valentina,Carrero Felipe,Carron Julien,Challinor Anthony,Chesmore Grace E.,Cho Hsiao-mei,Choi Steve K.ORCID,Clark Susan E.ORCID,Córdova Rosado Rodrigo,Cothard Nicholas F.,Coughlin Kevin,Coulton WilliamORCID,Dalal Roohi,Darwish Omar,Devlin Mark J.,Dicker SimonORCID,Doze PeterORCID,Duell Cody J.,Duff Shannon M.,Duivenvoorden Adriaan J.ORCID,Dunkley JoORCID,Dünner RolandoORCID,Fanfani Valentina,Fankhanel Max,Farren GerritORCID,Ferraro Simone,Freundt Rodrigo,Fuzia Brittany,Gallardo Patricio A.,Garrido Xavier,Gluscevic Vera,Golec Joseph E.,Guan YilunORCID,Halpern MarkORCID,Harrison Ian,Hasselfield Matthew,Healy Erin,Henderson Shawn,Hensley BrandonORCID,Hervías-Caimapo Carlos,Hill J. Colin,Hilton Gene C.,Hilton MattORCID,Hincks Adam D.ORCID,Hložek Renée,Ho Shuay-Pwu Patty,Huber Zachary B.,Hubmayr Johannes,Huffenberger Kevin M.ORCID,Hughes John P.ORCID,Irwin Kent,Isopi GiovanniORCID,Jense Hidde T.,Keller Ben,Kim Joshua,Knowles KendaORCID,Koopman Brian J.,Kosowsky ArthurORCID,Kramer Darby,Kusiak Aleksandra,La Posta Adrien,Lague Alex,Lakey Victoria,Lee Eunseong,Li Zack,Li Yaqiong,Limon Michele,Lokken Martine,Louis Thibaut,Lungu Marius,MacCrann Niall,MacInnis Amanda,Maldonado Diego,Maldonado Felipe,Mallaby-Kay Maya,Marques Gabriela A.,McMahon Jeff,Mehta Yogesh,Menanteau FelipeORCID,Moodley KavilanORCID,Morris Thomas W.,Mroczkowski TonyORCID,Naess SigurdORCID,Namikawa Toshiya,Nati Federico,Newburgh Laura,Nicola Andrina,Niemack Michael D.,Nolta Michael R.,Orlowski-Scherer JohnORCID,Page Lyman A.ORCID,Pandey Shivam,Partridge Bruce,Prince Heather,Puddu Roberto,Radiconi Federico,Robertson Naomi,Rojas Felipe,Sakuma Tai,Salatino Maria,Schaan EmmanuelORCID,Schmitt Benjamin L.,Sehgal NeelimaORCID,Shaikh Shabbir,Sierra Carlos,Sievers Jon,Sifón Cristóbal,Simon Sara,Sonka Rita,Spergel David N.ORCID,Staggs Suzanne T.,Storer Emilie,Switzer Eric R.,Tampier Niklas,Thornton Robert,Trac Hy,Treu Jesse,Tucker Carole,Ullom Joel,Vale Leila R.,Van Engelen Alexander,Van Lanen Jeff,van Marrewijk Joshiwa,Vargas Cristian,Vavagiakis Eve M.,Wagoner Kasey,Wang Yuhan,Wenzl LukasORCID,Wollack Edward J.ORCID,Xu ZhileiORCID,Zago Fernando,Zheng Kaiwen

Abstract

Abstract We present new measurements of cosmic microwave background (CMB) lensing over 9400 deg2 of the sky. These lensing measurements are derived from the Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) CMB data set, which consists of five seasons of ACT CMB temperature and polarization observations. We determine the amplitude of the CMB lensing power spectrum at 2.3% precision (43σ significance) using a novel pipeline that minimizes sensitivity to foregrounds and to noise properties. To ensure that our results are robust, we analyze an extensive set of null tests, consistency tests, and systematic error estimates and employ a blinded analysis framework. Our CMB lensing power spectrum measurement provides constraints on the amplitude of cosmic structure that do not depend on Planck or galaxy survey data, thus giving independent information about large-scale structure growth and potential tensions in structure measurements. The baseline spectrum is well fit by a lensing amplitude of A lens = 1.013 ± 0.023 relative to the Planck 2018 CMB power spectra best-fit ΛCDM model and A lens = 1.005 ± 0.023 relative to the ACT DR4 + WMAP best-fit model. From our lensing power spectrum measurement, we derive constraints on the parameter combination S 8 CMBL σ 8 Ω m / 0.3 0.25 of S 8 CMBL = 0.818 ± 0.022 from ACT DR6 CMB lensing alone and S 8 CMBL = 0.813 ± 0.018 when combining ACT DR6 and Planck NPIPE CMB lensing power spectra. These results are in excellent agreement with ΛCDM model constraints from Planck or ACT DR4 + WMAP CMB power spectrum measurements. Our lensing measurements from redshifts z ∼ 0.5–5 are thus fully consistent with ΛCDM structure growth predictions based on CMB anisotropies probing primarily z ∼ 1100. We find no evidence for a suppression of the amplitude of cosmic structure at low redshifts.

Funder

U.S. National science foundation

Publisher

American Astronomical Society

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3