Maqola

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

Frank J. QuDAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 OWA, UK; [email protected]Blake D. SherwinDAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 OWA, UK; [email protected]Mathew S. MadhavacherilDepartment of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, USADongwon HanDAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 OWA, UK; [email protected]Kevin T. CrowleyDepartment of Physics, University of California, Berkeley, CA 94720, USAIrene Abril-CabezasDAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 OWA, UK; [email protected]P. A. R. AdeSchool of Physics and Astronomy, Cardiff University, The Parade, Cardiff, Wales, CF24 3AA, UKSimone AiolaCenter for Computational Astrophysics, Flatiron Institute, 162 5th Avenue, New York, NY 10010, USATommy AlfordDepartment of Physics, University of Chicago, Chicago, IL 60637, USAM. AmiriDepartment of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z4, CanadaStefania AmodeoUniversité de Strasbourg, CNRS, Observatoire astronomique de Strasbourg, UMR 7550, F-67000 Strasbourg, FranceRui AnDepartment of Physics and Astronomy, University of Southern California, 825 Bloom Walk ACB 439, Los Angeles, CA 90089-0484, USAZachary AtkinsJoseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, NJ 08544, USAJason E. AustermannNIST Quantum Sensors Group, 325 Broadway Mailcode 817.03, Boulder, CO 80305, USANicholas BattagliaDepartment of Astronomy, Cornell University, Ithaca, NY 14853, USAE. S. BattistelliPhysics Department, Sapienza University of Rome, Piazzale Aldo Moro 5, I-00185 Rome, ItalyJames A. BeallNIST Quantum Sensors Group, 325 Broadway Mailcode 817.03, Boulder, CO 80305, USARachel BeanDepartment of Astronomy, Cornell University, Ithaca, NY 14853, USABenjamin BeringueSchool of Physics and Astronomy, Cardiff University, The Parade, Cardiff, Wales, CF24 3AA, UKTanay BhandarkarDepartment of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, USAEmily BiermannDepartment of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USABoris BollietDAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 OWA, UK; [email protected]J. Richard BondCanadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, ON M5S 3H8 CanadaHongbo CaiDepartment of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USAErminia CalabreseSchool of Physics and Astronomy, Cardiff University, The Parade, Cardiff, Wales, CF24 3AA, UKVictoria CalafutCanadian Institute for Theoretical AstrophysicsValentina CapalboPhysics Department, Sapienza University of Rome, Piazzale Aldo Moro 5, I-00185 Rome, ItalyFelipe CarreroInstituto de Astrofísica and Centro de Astro-Ingeniería, Facultad de Fìsica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, ChileJulien CarronDépartement de Physique Théorique et CAP, Université de Genève, 24 quai Ernest-Ansermet, CH-1211 Genève 4, SwitzerlandA. ChallinorDAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 OWA, UK; [email protected]Grace E. ChesmoreDepartment of Physics, University of Chicago, Chicago, IL 60637, USAHsiao-mei ChoNIST Quantum Sensors Group, 325 Broadway Mailcode 817.03, Boulder, CO 80305, USASteve K. ChoiDepartment of Astronomy, Cornell University, Ithaca, NY 14853, USASusan E. ClarkDepartment of Physics, Stanford University, Stanford, CA 94305-4085, USARodrigo Córdova RosadoDepartment of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544, USANicholas F. CothardNASA/Goddard Space Flight Center, Greenbelt, MD 20771, USAKevin CoughlinDepartment of Physics, University of Chicago, Chicago, IL 60637, USAWilliam R. CoultonCenter for Computational Astrophysics, Flatiron Institute, 162 5th Avenue, New York, NY 10010, USARoohi DalalDepartment of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544, USAOmar DarwishDépartement de Physique Théorique et CAP, Université de Genève, 24 quai Ernest-Ansermet, CH-1211 Genève 4, SwitzerlandMark J. DevlinDepartment of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, USASimon DickerDepartment of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, USAPeter DozeDepartment of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8019, USACody J. DuellDepartment of Physics, Cornell University, Ithaca, NY 14853, USAShannon M. DuffNIST Quantum Sensors Group, 325 Broadway Mailcode 817.03, Boulder, CO 80305, USAAdriaan J. DuivenvoordenCenter for Computational Astrophysics, Flatiron Institute, 162 5th Avenue, New York, NY 10010, USAJo DunkleyDepartment of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544, USARolando DünnerInstituto de Astrofísica and Centro de Astro-Ingeniería, Facultad de Fìsica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, ChileValentina FanfaniDepartment of Physics, University of Milano—Bicocca, Piazza della Scienza, 3, I-20126, Milano (MI), ItalyMax FankhanelGerrit S. FarrenDAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 OWA, UK; [email protected]S. FerraroDepartment of Physics, University of California, Berkeley, CA 94720, USARodrigo FreundtDepartment of Astronomy, Cornell University, Ithaca, NY 14853, USABrittany FuziaDepartment of Physics, Florida State University, Tallahassee, FL 32306, USAPatricio A. GallardoDepartment of Physics, University of Chicago, Chicago, IL 60637, USAX. GarridoUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay, FranceVera GluscevicDepartment of Physics and Astronomy, University of Southern California, 825 Bloom Walk ACB 439, Los Angeles, CA 90089-0484, USAJoseph E. GolecDepartment of Physics, University of Chicago, Chicago, IL 60637, USAYilun GuanDunlap Institute for Astronomy and Astrophysics, University of Toronto, 50 St. George St., Toronto, ON M5S 3H4, CanadaM. HalpernDepartment of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z4, CanadaI. HarrisonSchool of Physics and Astronomy, Cardiff University, The Parade, Cardiff, Wales, CF24 3AA, UKMatthew HasselfieldCenter for Computational Astrophysics, Flatiron Institute, 162 5th Avenue, New York, NY 10010, USAErin HealyDepartment of Physics, University of Chicago, Chicago, IL 60637, USAShawn HendersonSLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo Park, CA 94025, USABrandon S. HensleyDepartment of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544, USACarlos Hervías-CaimapoInstituto de Astrofísica and Centro de Astro-Ingeniería, Facultad de Fìsica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, ChileJ. Colin HillCenter for Computational Astrophysics, Flatiron Institute, 162 5th Avenue, New York, NY 10010, USAG. C. HiltonNIST Quantum Sensors Group, 325 Broadway Mailcode 817.03, Boulder, CO 80305, USAMatt HiltonAstrophysics Research Centre, School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Durban 4001, South AfricaAdam D. HincksDavid A. Dunlap Department of Astronomy and Astrophysics, University of Toronto, 50 St George Street, Toronto, ON M5S 3H4, CanadaRenée HložekDavid A. Dunlap Department of Astronomy and Astrophysics, University of Toronto, 50 St George Street, Toronto, ON M5S 3H4, CanadaRenée HložekJoseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, NJ 08544, USAZachary B. HuberDepartment of Physics, Cornell University, Ithaca, NY 14853, USAJohannes HubmayrNIST Quantum Sensors Group, 325 Broadway Mailcode 817.03, Boulder, CO 80305, USAK. M. HuffenbergerDepartment of Physics, Florida State University, Tallahassee, FL 32306, USAJohn P. HughesDepartment of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8019, USAK. D. IrwinDepartment of Physics, Stanford University, Stanford, CA 94305-4085, USAGiovanni IsopiPhysics Department, Sapienza University of Rome, Piazzale Aldo Moro 5, I-00185 Rome, ItalyHidde T. JenseSchool of Physics and Astronomy, Cardiff University, The Parade, Cardiff, Wales, CF24 3AA, UKBen KellerDepartment of Physics, Cornell University, Ithaca, NY 14853, USAJoshua KimDepartment of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, USAKenda KnowlesAstrophysics Research Centre, School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Durban 4001, South AfricaBrian J. KoopmanDepartment of Physics, Yale University, 217 Prospect St., New Haven, CT 06511, USAArthur KosowskyDepartment of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USADarby KramerSchool of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USAAleksandra KusiakDepartment of Physics, Columbia University, New York, NY 10027, USAAdrien La PostaUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay, FranceAlex LaguëDepartment of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, USAVictoria LakeyDepartment of Chemistry and Physics, Lincoln University, PA 19352, USAEunseong LeeDepartment of Astronomy, Cornell University, Ithaca, NY 14853, USAZack LiCanadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, ON M5S 3H8 CanadaYaqiong LiDepartment of Physics, Cornell University, Ithaca, NY 14853, USAM. LimonDepartment of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, USAMartine LokkenCanadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, ON M5S 3H8 CanadaThibaut LouisUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay, FranceMarius LunguDepartment of Physics, University of Chicago, Chicago, IL 60637, USAN. MacCrannDAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 OWA, UK; [email protected]Amanda MacInnisPhysics and Astronomy Department, Stony Brook University, Stony Brook, NY 11794, USADiego MaldonadoFelipe MaldonadoDepartment of Physics, Florida State University, Tallahassee, FL 32306, USA

2024en

ABI

Annotatsiya

Abstract We present new measurements of cosmic microwave background (CMB) lensing over 9400 deg 2 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 (43 σ 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 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msubsup> <mml:mrow> <mml:mi>S</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>8</mml:mn> </mml:mrow> <mml:mrow> <mml:mi>CMBL</mml:mi> </mml:mrow> </mml:msubsup> <mml:mo>≡</mml:mo> <mml:msub> <mml:mrow> <mml:mi>σ</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>8</mml:mn> </mml:mrow> </mml:msub> <mml:msup> <mml:mrow> <mml:mfenced close=")" open="("> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">Ω</mml:mi> </mml:mrow> <mml:mrow> <mml:mi>m</mml:mi> </mml:mrow> </mml:msub> <mml:mrow> <mml:mo stretchy="true">/</mml:mo> </mml:mrow> <mml:mn>0.3</mml:mn> </mml:mrow> </mml:mfenced> </mml:mrow> <mml:mrow> <mml:mn>0.25</mml:mn> </mml:mrow> </mml:msup> </mml:math> of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msubsup> <mml:mrow> <mml:mi>S</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>8</mml:mn> </mml:mrow> <mml:mrow> <mml:mi>CMBL</mml:mi> </mml:mrow> </mml:msubsup> <mml:mo>=</mml:mo> <mml:mn>0.818</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.022</mml:mn> </mml:math> from ACT DR6 CMB lensing alone and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msubsup> <mml:mrow> <mml:mi>S</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>8</mml:mn> </mml:mrow> <mml:mrow> <mml:mi>CMBL</mml:mi> </mml:mrow> </mml:msubsup> <mml:mo>=</mml:mo> <mml:mn>0.813</mml:mn> <mml:mo>±</mml:mo> <mml:mn>0.018</mml:mn> </mml:math> 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.

Identifikatorlar

DOI: 10.3847/1538-4357/acfe06

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