The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and Its Implications for Structure Growth
The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and Its Implications for Structure Growth
复制标题
DOI：
10.3847/1538-4357/acfe06
复制
发表时间：
2023-04
期刊：
影响因子：
--
通讯作者：
F. J. Qu;B. Sherwin;M. Madhavacheril;Dongwon Han;K. Crowley;I. Abril-Cabezas;P. Ade;S. Aiola;T. Alford;M. Amiri;S. Amodeo;R. An;Zachary R. Atkins;J. Austermann;N. Battaglia;E. Battistelli;J. Beall;R. Bean;B. Beringue;Tanay Bhandarkar;Emily Biermann;B. Bolliet;J. Bond;Hongbo Cai;E. Calabrese;Victoria Calafut;V. Capalbo;Felipe Carrero;J. Carron;A. Challinor;G. Chesmore;Hsiao-mei Cho.;Steve K. Choi;S. Clark;Rodrigo C'ordova Rosado;N. Cothard;K. Coughlin;W. Coulton;R. Dalal;O. Darwish;M. Devlin;S. Dicker;P. Doze;C. Duell;S. Duff;A. Duivenvoorden;J. Dunkley;R. Dunner;Valentina Fanfani;M. Fankhanel;G. Farren;S. Ferraro;R. Freundt;Brittany Fuzia;P. Gallardo;X. Garrido;V. Gluscevic;J. Golec;Yilun Guan;M. Halpern;I. Harrison;M. Hasselfield;E. Healy;Shawn W. Henderson;B. Hensley;Carlos Herv'ias-Caimapo;J. Hill;G. Hilton;M. Hilton;A. Hincks;R. Hlovzek;S. Ho;Z. Huber;J. Hubmayr;K. Huffenberger;J. Hughes;K. Irwin;G. Isopi;H. Jense;B. Keller;Joshua Kim;K. Knowles;B. Koopman;A. Kosowsky;D. Kramer;A. Kusiak;A. L. Posta;Alex Lague;Victoria Lakey;Eunseong Lee;Zack Li;Yaqiong Li;M. Limon;M. Lokken;T. Louis;M. Lungu;N. MacCrann;Amanda Macinnis;Diego Maldonado;Felipe Maldonado;M. Mallaby-Kay;G. Marques;J. McMahon;Yogesh Mehta;F. Menanteau;K. Moodley;Thomas W. Morris;T. Mroczkowski;S. Naess;T. Namikawa;F. Nati;L. Newburgh;A. Nicola;M. Niemack;M. Nolta;J. Orlowski-Scherer;L. Page;Shivam Pandey;B. Partridge;H. Prince;R. Puddu;F. Radiconi;N. Robertson;Felipe Rojas;T. Sakuma;M. Salatino;E. Schaan;B. Schmitt;N. Sehgal;S. Shaikh;C. Sierra;J. Sievers;C. Sif'on;S. Simon;Rita F. Sonka;D. Spergel;S. Staggs;E. Storer;E. Switzer;Niklas Tampier;R. Thornton;H. Trac;J. Treu;C. Tucker;Joel Ulluom;L. Vale;A. V. Engelen;J. Lanen;J. V. Marrewijk;C. Vargas;E. Vavagiakis;K. Wagoner;Yuhan Wang;L. Wenzl;Edward J. Wollack;Zhilei Xu;Fernando Zago;Kaiwen Zhang
中科院分区：
文献类型：
--
作者：
F. J. Qu;B. Sherwin;M. Madhavacheril;Dongwon Han;K. Crowley;I. Abril-Cabezas;P. Ade;S. Aiola;T. Alford;M. Amiri;S. Amodeo;R. An;Zachary R. Atkins;J. Austermann;N. Battaglia;E. Battistelli;J. Beall;R. Bean;B. Beringue;Tanay Bhandarkar;Emily Biermann;B. Bolliet;J. Bond;Hongbo Cai;E. Calabrese;Victoria Calafut;V. Capalbo;Felipe Carrero;J. Carron;A. Challinor;G. Chesmore;Hsiao-mei Cho.;Steve K. Choi;S. Clark;Rodrigo C'ordova Rosado;N. Cothard;K. Coughlin;W. Coulton;R. Dalal;O. Darwish;M. Devlin;S. Dicker;P. Doze;C. Duell;S. Duff;A. Duivenvoorden;J. Dunkley;R. Dunner;Valentina Fanfani;M. Fankhanel;G. Farren;S. Ferraro;R. Freundt;Brittany Fuzia;P. Gallardo;X. Garrido;V. Gluscevic;J. Golec;Yilun Guan;M. Halpern;I. Harrison;M. Hasselfield;E. Healy;Shawn W. Henderson;B. Hensley;Carlos Herv'ias-Caimapo;J. Hill;G. Hilton;M. Hilton;A. Hincks;R. Hlovzek;S. Ho;Z. Huber;J. Hubmayr;K. Huffenberger;J. Hughes;K. Irwin;G. Isopi;H. Jense;B. Keller;Joshua Kim;K. Knowles;B. Koopman;A. Kosowsky;D. Kramer;A. Kusiak;A. L. Posta;Alex Lague;Victoria Lakey;Eunseong Lee;Zack Li;Yaqiong Li;M. Limon;M. Lokken;T. Louis;M. Lungu;N. MacCrann;Amanda Macinnis;Diego Maldonado;Felipe Maldonado;M. Mallaby-Kay;G. Marques;J. McMahon;Yogesh Mehta;F. Menanteau;K. Moodley;Thomas W. Morris;T. Mroczkowski;S. Naess;T. Namikawa;F. Nati;L. Newburgh;A. Nicola;M. Niemack;M. Nolta;J. Orlowski-Scherer;L. Page;Shivam Pandey;B. Partridge;H. Prince;R. Puddu;F. Radiconi;N. Robertson;Felipe Rojas;T. Sakuma;M. Salatino;E. Schaan;B. Schmitt;N. Sehgal;S. Shaikh;C. Sierra;J. Sievers;C. Sif'on;S. Simon;Rita F. Sonka;D. Spergel;S. Staggs;E. Storer;E. Switzer;Niklas Tampier;R. Thornton;H. Trac;J. Treu;C. Tucker;Joel Ulluom;L. Vale;A. V. Engelen;J. Lanen;J. V. Marrewijk;C. Vargas;E. Vavagiakis;K. Wagoner;Yuhan Wang;L. Wenzl;Edward J. Wollack;Zhilei Xu;Fernando Zago;Kaiwen Zhang
我们提出了宇宙微波背景(CMB)透镜超过9400°2天空的新测量结果。这些透镜测量来自阿塔卡马宇宙学望远镜(ACT)数据发布6(DR6)CMB数据集，该数据集包括ACT CMB温度和偏振观测的五季。我们使用一种新的管道，最大限度地降低了对前景和噪声特性的敏感度，以2.3%的精度(43σ显著)确定了CMB透镜功率谱的幅度。为了确保我们的结果是稳健的，我们分析了大量的空测试、一致性测试和系统误差估计，并使用了盲目分析框架。我们的CMB透镜功率谱测量对宇宙结构的振幅提供了不依赖于普朗克或星系测量数据的约束，从而提供了关于大尺度结构增长和结构测量中潜在张力的独立信息。相对于Planck 2018 CMB功率谱最佳拟合ΛCDM模型，A透镜=1.013±0.023；相对于ACT DR4+WMAP最佳匹配模型，A透镜=1.005±0.023很好地拟合了基线光谱。从我们的透镜功率谱测量中，我们得到了参数组合S8CMBL≡σ8Ωm/0.30.25的约束条件：ACTDR6 CMB透镜的参数组合S8CMBL=0.818±0.022，ACTDR6和Planck NPIPE CMB透镜的联合参数组合S8CMBL=0.813±0.018。这些结果与来自普朗克或ACTDR4+WMAP CMB功率谱测量的ΛCDM模型约束非常一致。因此，我们对红移z∼0.5-5的透镜测量与基于主要探测zΛ1100的∼各向异性的CMB清洁发展机制结构增长的预测完全一致。我们没有发现在低红移时宇宙结构的振幅受到抑制的证据。
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 S8CMBL≡σ8Ωm/0.30.25 of S8CMBL=0.818±0.022 from ACT DR6 CMB lensing alone and S8CMBL=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.