A measurement of CMB cluster lensing with SPT and DES year 1 data
Clusters of galaxies gravitationally lens the cosmic microwave background (CMB) radiation, resulting in a distinct imprint in the CMB on arcminute scales. Measurement of this effect offers a promising way to constrain the masses of galaxy clusters, particularly those at high redshift. We use CMB map...
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Online Access: | http://raiith.iith.ac.in/4714/ https://doi.org/10.1093/mnras/sty305 |
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ftiith:oai:raiith.iith.ac.in:4714 2023-05-15T18:22:32+02:00 A measurement of CMB cluster lensing with SPT and DES year 1 data Baxter, E J Desai, Shantanu al, et 2018 http://raiith.iith.ac.in/4714/ https://doi.org/10.1093/mnras/sty305 unknown Oxford University Press Baxter, E J and Desai, Shantanu and al, et (2018) A measurement of CMB cluster lensing with SPT and DES year 1 data. Monthly Notices of the Royal Astronomical Society, 476 (2). pp. 2674-2688. ISSN 0035-8711 Physics Article PeerReviewed 2018 ftiith https://doi.org/10.1093/mnras/sty305 2022-09-28T08:34:52Z Clusters of galaxies gravitationally lens the cosmic microwave background (CMB) radiation, resulting in a distinct imprint in the CMB on arcminute scales. Measurement of this effect offers a promising way to constrain the masses of galaxy clusters, particularly those at high redshift. We use CMB maps from the South Pole Telescope Sunyaev–Zel'dovich (SZ) survey to measure the CMB lensing signal around galaxy clusters identified in optical imaging from first year observations of the Dark Energy Survey. The cluster catalogue used in this analysis contains 3697 members with mean redshift of z¯=0.45. We detect lensing of the CMB by the galaxy clusters at 8.1σ significance. Using the measured lensing signal, we constrain the amplitude of the relation between cluster mass and optical richness to roughly 17percent precision, finding good agreement with recent constraints obtained with galaxy lensing. The error budget is dominated by statistical noise but includes significant contributions from systematic biases due to the thermal SZ effect and cluster miscentring. Article in Journal/Newspaper South pole Research Archive of Indian Institute of Technology, Hyderabad (RAIITH) South Pole Monthly Notices of the Royal Astronomical Society 476 2 2674 2688 |
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Research Archive of Indian Institute of Technology, Hyderabad (RAIITH) |
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Physics |
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Physics Baxter, E J Desai, Shantanu al, et A measurement of CMB cluster lensing with SPT and DES year 1 data |
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Physics |
description |
Clusters of galaxies gravitationally lens the cosmic microwave background (CMB) radiation, resulting in a distinct imprint in the CMB on arcminute scales. Measurement of this effect offers a promising way to constrain the masses of galaxy clusters, particularly those at high redshift. We use CMB maps from the South Pole Telescope Sunyaev–Zel'dovich (SZ) survey to measure the CMB lensing signal around galaxy clusters identified in optical imaging from first year observations of the Dark Energy Survey. The cluster catalogue used in this analysis contains 3697 members with mean redshift of z¯=0.45. We detect lensing of the CMB by the galaxy clusters at 8.1σ significance. Using the measured lensing signal, we constrain the amplitude of the relation between cluster mass and optical richness to roughly 17percent precision, finding good agreement with recent constraints obtained with galaxy lensing. The error budget is dominated by statistical noise but includes significant contributions from systematic biases due to the thermal SZ effect and cluster miscentring. |
format |
Article in Journal/Newspaper |
author |
Baxter, E J Desai, Shantanu al, et |
author_facet |
Baxter, E J Desai, Shantanu al, et |
author_sort |
Baxter, E J |
title |
A measurement of CMB cluster lensing with SPT and DES year 1 data |
title_short |
A measurement of CMB cluster lensing with SPT and DES year 1 data |
title_full |
A measurement of CMB cluster lensing with SPT and DES year 1 data |
title_fullStr |
A measurement of CMB cluster lensing with SPT and DES year 1 data |
title_full_unstemmed |
A measurement of CMB cluster lensing with SPT and DES year 1 data |
title_sort |
measurement of cmb cluster lensing with spt and des year 1 data |
publisher |
Oxford University Press |
publishDate |
2018 |
url |
http://raiith.iith.ac.in/4714/ https://doi.org/10.1093/mnras/sty305 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
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South pole |
op_relation |
Baxter, E J and Desai, Shantanu and al, et (2018) A measurement of CMB cluster lensing with SPT and DES year 1 data. Monthly Notices of the Royal Astronomical Society, 476 (2). pp. 2674-2688. ISSN 0035-8711 |
op_doi |
https://doi.org/10.1093/mnras/sty305 |
container_title |
Monthly Notices of the Royal Astronomical Society |
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476 |
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2 |
container_start_page |
2674 |
op_container_end_page |
2688 |
_version_ |
1766201943396450304 |