The Atacama Cosmology Telescope: DR6 maps

Journal of Cosmology and Astroparticle Physics, vol. 2025, pp. 061

Abstract

Abstract We present Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) maps of the Cosmic Microwave Background temperature and polarization anisotropy at arcminute resolution over three frequency bands centered on 98, 150 and 220 GHz. The maps are based on data collected with the AdvancedACT camera over the period 2017–2022 and cover 19,000 square degrees with a median combined depth of 10 μK arcmin. We describe the instrument, mapmaking and map properties and illustrate them with a number of figures and tables. The ACT DR6 maps and derived products are available on LAMBDA at https://lambda.gsfc.nasa.gov/product/act/actadv_prod_table.html . We also provide an interactive web atlas at https://phy-act1.princeton.edu/public/snaess/actpol/dr6/atlas and HiPS data sets in Aladin (e.g. https://alasky.cds.unistra.fr/ACT/DR4DR6/color_CMB ).

Authors 3

1. Peter A. R. Ade

   Cardiff University

   Affiliation as printed

   School of Physics and Astronomy, Cardiff University, The Parade, Cardiff, Wales CF24 3AA, U.K

2. Eleonora Barbavara

   Sapienza University of Rome

   Affiliation as printed

   Sapienza University of Rome, Physics Department, Piazzale Aldo Moro 5, 00185 Rome, Italy

3. Thibaut Louis

   Centre National de la Recherche Scientifique · Université Paris-Saclay · Institut National de Physique Nucléaire et de Physique des Particules · Laboratoire de Physique des 2 Infinis Irène Joliot-Curie

   Affiliation as printed

   Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France