Two-season Atacama Cosmology Telescope polarimeter lensing power spectrum

作     者：Blake D. Sherwin Alexander van Engelen Neelima Sehgal Mathew Madhavacheril Graeme E. Addison Simone Aiola Rupert Allison Nicholas Battaglia Daniel T. Becker James A. Beall J. Richard Bond Erminia Calabrese Rahul Datta Mark J. Devlin Rolando Dünner Joanna Dunkley Anna E. Fox Patricio Gallardo Mark Halpern Matthew Hasselfield Shawn Henderson J. Colin Hill Gene C. Hilton Johannes Hubmayr John P. Hughes Adam D. Hincks Renée Hlozek Kevin M. Huffenberger Brian Koopman Arthur Kosowsky Thibaut Louis Loïc Maurin Jeff McMahon Kavilan Moodley Sigurd Naess Federico Nati Laura Newburgh Michael D. Niemack Lyman A. Page Jonathan Sievers David N. Spergel Suzanne T. Staggs Robert J. Thornton Jeff Van Lanen Eve Vavagiakis Edward J. Wollack 

作者机构：Berkeley Center for Cosmological Physics Lawrence Berkeley National Laboratory Berkeley California 94720 USA Canadian Institute for Theoretical Astrophysics University of Toronto Toronto Ontario Canada M5S 3H8 Physics and Astronomy Department Stony Brook University Stony Brook New York 11794 USA Department of Astrophysical Sciences Peyton Hall Princeton University Princeton New Jersey 08544 USA Dept. of Physics and Astronomy The Johns Hopkins University 3400 North Charles Street Baltimore Maryland 21218-2686 USA Joseph Henry Laboratories of Physics Jadwin Hall Princeton University Princeton New Jersey 08544 USA Department of Physics and Astronomy University of Pittsburgh Pittsburgh Pennsylvania 15260 USA Pittsburgh Particle Physics Astrophysics and Cosmology Center University of Pittsburgh Pittsburgh Pennsylvania 15260 USA Institute of Astronomy Cambridge Madingley Road Cambridge CB3 0HA United Kingdom NIST Quantum Devices Group 325 Broadway Mailcode 817.03 Boulder Colorado 80305 USA Sub-Department of Astrophysics University of Oxford Keble Road Oxford OX1 3RH United Kingdom Department of Physics University of Michigan Ann Arbor Michigan 48103 USA Department of Physics and Astronomy University of Pennsylvania Philadelphia Pennsylvania 19104 USA Instituto de Astrofísica and Centro de Astro-Ingeniería Facultad de Física Pontificia Universidad Católica de Chile Av. Vicuña Mackenna 4860 7820436 Macul Santiago Chile Department of Physics Cornell University Ithaca New York 14853 USA Department of Physics and Astronomy University of British Columbia Vancouver British Columbia Canada V6T 1Z4 Department of Astronomy and Astrophysics The Pennsylvania State University University Park Pennsylvania 16802 USA Institute for Gravitation and the Cosmos The Pennsylvania State University University Park Pennsylvania 16802 Department of Astronomy Pupin Hall Columbia University New York NY 10027 USA Department of Physics and Astronomy Rutgers The State University of New Jersey Piscataway New Jersey 08854-8019 USA Department of Physics University of Rome “La Sapienza” Piazzale Aldo Moro 5 I-00185 Rome Italy Dunlap Institute University of Toronto 50 St. George Street Toronto Ontario Canada M5S 3H4 USA Department of Physics Florida State University Tallahassee Florida 32306 USA UPMC Univ Paris 06 UMR7095 Institut d’Astrophysique de Paris F-75014 Paris France Astrophysics and Cosmology Research Unit School of Mathematics Statistics and Computer Science University of KwaZulu-Natal Durban 4041 South Africa Center for Computational Astrophysics 162 5th Avenue New York New York 10003 USA Astrophysics and Cosmology Research Unit School of Chemistry and Physics University of KwaZulu-Natal Durban South Africa National Institute for Theoretical Physics Durban 4000 KwaZulu-Natal South Africa Department of Physics West Chester University of Pennsylvania West Chester Pennsylvania 19383 USA NASA/Goddard Space Flight Center Greenbelt Maryland 20771 USA 

出 版 物：《Physical Review D》 (Phy. Rev. D)

年 卷 期：2017年第95卷第12期

页      面：123529-123529页

核心收录：

基　　金：National Science Foundation, NSF, (0408698, 1312380, 1440226, 1454881, 1513618) National Science Foundation, NSF Economic and Social Research Council, ESRC, (ES/N013956/1) Economic and Social Research Council, ESRC Science and Technology Facilities Council, STFC, (ST/N000927/1) Science and Technology Facilities Council, STFC 

主　　题：Cosmic microwave background Cosmological parameters Gravitational lenses Large scale structure of the Universe 

摘      要：We report a measurement of the power spectrum of cosmic microwave background (CMB) lensing from two seasons of Atacama Cosmology Telescope polarimeter (ACTPol) CMB data. The CMB lensing power spectrum is extracted from both temperature and polarization data using quadratic estimators. We obtain results that are consistent with the expectation from the best-fit Planck ΛCDM model over a range of multipoles L=80–2100, with an amplitude of lensing Alens=1.06±0.15(stat)±0.06(sys) relative to Planck. Our measurement of the CMB lensing power spectrum gives σ8Ωm0.25=0.643±0.054; including baryon acoustic oscillation scale data, we constrain the amplitude of density fluctuations to be σ8=0.831±0.053. We also update constraints on the neutrino mass sum. We verify our lensing measurement with a number of null tests and systematic checks, finding no evidence of significant systematic errors. This measurement relies on a small fraction of the ACTPol data already taken; more precise lensing results can therefore be expected from the full ACTPol data set.