The Atacama Cosmology Telescope: High-resolution component-separated maps across one-third of the sky
Abstract
Observations of the millimeter sky contain valuable information on a number of signals, including the blackbody cosmic microwave background (CMB), Galactic emissions, and the Compton- distortion due to the thermal Sunyaev-Zel'dovich (tSZ) effect. Extracting new insight into cosmological and astrophysical questions often requires combining multi-wavelength observations to spectrally isolate one component. In this work, we present a new arcminute-resolution Compton- map, which traces out the line-of-sight-integrated electron pressure, as well as maps of the CMB in intensity and E-mode polarization, across a third of the sky (around 13,000 sq.~deg.). We produce these through a joint analysis of data from the Atacama Cosmology Telescope (ACT) Data Release 4 and 6 at frequencies of roughly 93, 148, and 225 GHz, together with data from the \textit{Planck} satellite at frequencies between 30 GHz and 545 GHz. We present detailed verification of an internal linear combination pipeline implemented in a needlet frame that allows us to efficiently suppress Galactic contamination and account for spatial variations in the ACT instrument noise. These maps provide a significant advance, in noise levels and resolution, over the existing \textit{Planck} component-separated maps and will enable a host of science goals including studies of cluster and galaxy astrophysics, inferences of the cosmic velocity field, primordial non-Gaussianity searches, and gravitational lensing reconstruction of the CMB.
Keywords
Cite
@article{arxiv.2307.01258,
title = {The Atacama Cosmology Telescope: High-resolution component-separated maps across one-third of the sky},
author = {William R. Coulton and Mathew S. Madhavacheril and Adriaan J. Duivenvoorden and J. Colin Hill and Irene Abril-Cabezas and Peter A. R. Ade and Simone Aiola and Tommy Alford and Mandana Amiri and Stefania Amodeo and Rui An and Zachary Atkins and Jason E. Austermann and Nicholas Battaglia and Elia Stefano Battistelli and James A. Beall and Rachel Bean and Benjamin Beringue and Tanay Bhandarkar and Emily Biermann and Boris Bolliet and J Richard Bond and Hongbo Cai and Erminia Calabrese and Victoria Calafut and Valentina Capalbo and Felipe Carrero and Grace E. Chesmore and Hsiao-mei Cho and Steve K. Choi and Susan E. Clark and Rodrigo Córdova Rosado and Nicholas F. Cothard and Kevin Coughlin and Kevin T. Crowley and Mark J. Devlin and Simon Dicker and Peter Doze and Cody J. Duell and Shannon M. Duff and Jo Dunkley and Rolando Dünner and Valentina Fanfani and Max Fankhanel and Gerrit Farren and Simone Ferraro and Rodrigo Freundt and Brittany Fuzia and Patricio A. Gallardo and Xavier Garrido and Jahmour Givans and Vera Gluscevic and Joseph E. Golec and Yilun Guan and Mark Halpern and Dongwon Han and Matthew Hasselfield and Erin Healy and Shawn Henderson and Brandon Hensley and Carlos Hervías-Caimapo and Gene C. Hilton and Matt Hilton and Adam D. Hincks and Renée Hložek and Shuay-Pwu Patty Ho and Zachary B. Huber and Johannes Hubmayr and Kevin M. Huffenberger and John P. Hughes and Kent Irwin and Giovanni Isopi and Hidde T. Jense and Ben Keller and Joshua Kim and Kenda Knowles and Brian J. Koopman and Arthur Kosowsky and Darby Kramer and Aleksandra Kusiak and Adrien La Posta and Victoria Lakey and Eunseong Lee and Zack Li and Yaqiong Li and Michele Limon and Martine Lokken and Thibaut Louis and Marius Lungu and Niall MacCrann and Amanda MacInnis and Diego Maldonado and Felipe Maldonado and Maya Mallaby-Kay and Gabriela A. Marques and Joshiwa van Marrewijk and Fiona McCarthy and Jeff McMahon and Yogesh Mehta and Felipe Menanteau and Kavilan Moodley and Thomas W. Morris and Tony Mroczkowski and Sigurd Naess and Toshiya Namikawa and Federico Nati and Laura Newburgh and Andrina Nicola and Michael D. Niemack and Michael R. Nolta and John Orlowski-Scherer and Lyman A. Page and Shivam Pandey and Bruce Partridge and Heather Prince and Roberto Puddu and Frank J. Qu and Federico Radiconi and Naomi Robertson and Felipe Rojas and Tai Sakuma and Maria Salatino and Emmanuel Schaan and Benjamin L. Schmitt and Neelima Sehgal and Shabbir Shaikh and Blake D. Sherwin and Carlos Sierra and Jon Sievers and Cristóbal Sifón and Sara Simon and Rita Sonka and David N. Spergel and Suzanne T. Staggs and Emilie Storer and Eric R. Switzer and Niklas Tampier and Robert Thornton and Hy Trac and Jesse Treu and Carole Tucker and Joel Ullom and Leila R. Vale and Alexander Van Engelen and Jeff Van Lanen and Cristian Vargas and Eve M. Vavagiakis and Kasey Wagoner and Yuhan Wang and Lukas Wenzl and Edward J. Wollack and Zhilei Xu and Fernando Zago and Kaiwen Zheng},
journal= {arXiv preprint arXiv:2307.01258},
year = {2023}
}
Comments
The Compton-y map and associated products will be made publicly available upon publication of the paper. The CMB T and E mode maps will be made available when the DR6 maps are made public