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Evidence of Lensing of the Cosmic Microwave Background by Dark Matter Halos

Author(s): Madhavacheril, Mathew; Sehgal, Neelima; Allison, Rupert; Battaglia, Nick; Bond, J Richard; et al

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Abstract: We present evidence of the gravitational lensing of the cosmic microwave background by 10(13) solar mass dark matter halos. Lensing convergence maps from the Atacama Cosmology Telescope Polarimeter (ACTPol) are stacked at the positions of around 12 000 optically selected CMASS galaxies from the SDSS-III/BOSS survey. The mean lensing signal is consistent with simulated dark matter halo profiles and is favored over a null signal at 3.2 sigma significance. This result demonstrates the potential of microwave background lensing to probe the dark matter distribution in galaxy group and galaxy cluster halos.
Publication Date: 17-Apr-2015
Electronic Publication Date: 13-Apr-2015
Citation: Madhavacheril, Mathew, Sehgal, Neelima, Allison, Rupert, Battaglia, Nick, Bond, J Richard, Calabrese, Erminia, Caliguiri, Jerod, Coughlin, Kevin, Crichton, Devin, Datta, Rahul, Devlin, Mark J, Dunkley, Joanna, Duenner, Rolando, Fogarty, Kevin, Grace, Emily, Hajian, Amir, Hasselfield, Matthew, Hill, J Colin, Hilton, Matt, Hincks, Adam D, Hlozek, Renee, Hughes, John P, Kosowsky, Arthur, Louis, Thibaut, Lungu, Marius, McMahon, Jeff, Moodley, Kavilan, Munson, Charles, Naess, Sigurd, Nati, Federico, Newburgh, Laura, Niemack, Michael D, Page, Lyman A, Partridge, Bruce, Schmitt, Benjamin, Sherwin, Blake D, Sievers, Jon, Spergel, David N, Staggs, Suzanne T, Thornton, Robert, Van Engelen, Alexander, Ward, Jonathan T, Wollack, Edward J, Collab, Atacama Cosmology Telescope. (2015). Evidence of Lensing of the Cosmic Microwave Background by Dark Matter Halos. PHYSICAL REVIEW LETTERS, 114 (10.1103/PhysRevLett.114.151302
DOI: doi:10.1103/PhysRevLett.114.151302
ISSN: 0031-9007
EISSN: 1079-7114
Type of Material: Journal Article
Journal/Proceeding Title: PHYSICAL REVIEW LETTERS
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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