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arxiv 2004.01139 v2 pith:6U62ABJB submitted 2020-04-02 astro-ph.CO astro-ph.GA

The Atacama Cosmology Telescope: A CMB lensing mass map over 2100 square degrees of sky and its cross-correlation with BOSS-CMASS galaxies

Omar Darwish , Mathew S. Madhavacheril , Blake Sherwin , Simone Aiola , Nicholas Battaglia , James A. Beall , Daniel T. Becker , J. Richard Bond
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Erminia Calabrese Steve Choi Mark J. Devlin Jo Dunkley Rolando D\"unner Simone Ferraro Anna E. Fox Patricio A. Gallardo Yilun Guan Mark Halpern Dongwon Han Matthew Hasselfield J. Colin Hill Gene C. Hilton Matt Hilton Adam D. Hincks Shuay-Pwu Patty Ho J. Hubmayr John P. Hughes Brian J. Koopman Arthur Kosowsky J. Van Lanen Thibaut Louis Marius Lungu Amanda MacInnis Lo\"ic Maurin Jeffrey McMahon Kavilan Moodley Sigurd Naess Toshiya Namikawa Laura Newburgh John P. Nibarger Micheal D. Niemack Lyman A. Page Bruce Partridge Frank J. Qu Naomi Robertson Benjamin Schmitt Neelima Sehgal Crist\'obal Sif\'on David N. Spergel Suzanne Staggs Emilie Storer Alexander van Engelen Edward J. Wollack
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keywords lensingmapsatacamabackgroundcosmiccosmologycross-correlationdata
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We construct cosmic microwave background lensing mass maps using data from the 2014 and 2015 seasons of observations with the Atacama Cosmology Telescope (ACT). These maps cover 2100 square degrees of sky and overlap with a wide variety of optical surveys. The maps are signal dominated on large scales and have fidelity such that their correlation with the cosmic infrared background is clearly visible by eye. We also create lensing maps with thermal Sunyaev-Zel'dovich contamination removed using a novel cleaning procedure that only slightly degrades the lensing signal-to-noise ratio. The cross-spectrum between the cleaned lensing map and the BOSS CMASS galaxy sample is detected at $10$-$\sigma$ significance, with an amplitude of $A=1.02 \pm 0.10$ relative to the Planck best-fit LCDM cosmological model with fiducial linear galaxy bias. Our measurement lays the foundation for lensing cross-correlation science with current ACT data and beyond.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. CMB Lensing Reconstruction Using Two Years of Temperature Data from the SPT-3G Summer Survey

    astro-ph.CO 2026-07 conditional novelty 5.0

    First CMB lensing reconstruction from two years of SPT-3G Summer temperature data yields A_comb = 1.015 ± 0.053 over 50 < L < 2000, consistent with Planck 2018 ΛCDM.

  2. CMB lensing from Planck PR4 maps

    astro-ph.CO 2022-06 accept novelty 5.0

    Planck PR4 maps with optimal filtering yield CMB lensing amplitude 1.004 ± 0.024 and σ8 Ωm^0.25 = 0.599 ± 0.016, the tightest lensing constraint yet.