The Atacama Cosmology Telescope: Weighing Distant Clusters with the Most Ancient Light

Madhavacheril, Mathew S. and Sifón, Cristóbal and Battaglia, Nicholas and Aiola, Simone and Amodeo, Stefania and Austermann, Jason E. and Beall, James A. and Becker, Daniel T. and Bond, J. Richard and Calabrese, Erminia and Choi, Steve K. and Denison, Edward V. and Devlin, Mark J. and Dicker, Simon R. and Duff, Shannon M. and Duivenvoorden, Adriaan J. and Dunkley, Jo and Dünner, Rolando and Ferraro, Simone and Gallardo, Patricio A. and Guan, Yilun and Han, Dongwon and Hill, J. Colin and Hilton, Gene C. and Hilton, Matt and Hubmayr, Johannes and Huffenberger, Kevin M. and Hughes, John P. and Koopman, Brian J. and Kosowsky, Arthur and Lanen, Jeff Van and Lee, Eunseong and Louis, Thibaut and MacInnis, Amanda and McMahon, Jeffrey and Moodley, Kavilan and Naess, Sigurd and Namikawa, Toshiya and Nati, Federico and Newburgh, Laura and Niemack, Michael D. and Page, Lyman A. and Partridge, Bruce and Qu, Frank J. and Robertson, Naomi C. and Salatino, Maria and Schaan, Emmanuel and Schillaci, Alessandro and Schmitt, Benjamin L. and Sehgal, Neelima and Sherwin, Blake D. and Simon, Sara M. and Spergel, David N. and Staggs, Suzanne and Storer, Emilie R. and Ullom, Joel N. and Vale, Leila R. and Engelen, Alexander van and Vavagiakis, Eve M. and Wollack, Edward J. and Xu, Zhilei (2020) The Atacama Cosmology Telescope: Weighing Distant Clusters with the Most Ancient Light. The Astrophysical Journal, 903 (1). L13. ISSN 2041-8213

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Abstract

We use gravitational lensing of the cosmic microwave background (CMB) to measure the mass of the most distant blindly selected sample of galaxy clusters on which a lensing measurement has been performed to date. In CMB data from the the Atacama Cosmology Telescope and the Planck satellite, we detect the stacked lensing effect from 677 near-infrared-selected galaxy clusters from the Massive and Distant Clusters of WISE Survey (MaDCoWS), which have a mean redshift of $\langle z\rangle =1.08$. There are currently no representative optical weak lensing measurements of clusters that match the distance and average mass of this sample. We detect the lensing signal with a significance of $4.2\sigma $. We model the signal with a halo model framework to find the mean mass of the population from which these clusters are drawn. Assuming that the clusters follow Navarro–Frenk–White (NFW) density profiles, we infer a mean mass of $\langle {M}_{500c}\rangle =\left(1.7\pm 0.4\right)\times {10}^{14}\,{M}_{\odot }$. We consider systematic uncertainties from cluster redshift errors, centering errors, and the shape of the NFW profile. These are all smaller than 30% of our reported uncertainty. This work highlights the potential of CMB lensing to enable cosmological constraints from the abundance of distant clusters populating ever larger volumes of the observable universe, beyond the capabilities of optical weak lensing measurements.

Item Type: Article
Subjects: Science Repository > Physics and Astronomy
Depositing User: Managing Editor
Date Deposited: 20 May 2023 03:57
Last Modified: 12 Jan 2024 04:57
URI: http://research.manuscritpub.com/id/eprint/2262

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