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...
Published in: | Monthly Notices of the Royal Astronomical Society |
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/263260 2023-10-29T02:40:12+01:00 A measurement of CMB cluster lensing with SPT and DES year 1 data Baxter, E. J. Raghunathan, S. Crawford, T.M. Hartley, William G. 2018-05 application/application/pdf https://hdl.handle.net/20.500.11850/263260 https://doi.org/10.3929/ethz-b-000263260 en eng Oxford University Press info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty305 info:eu-repo/semantics/altIdentifier/wos/000430940900094 http://hdl.handle.net/20.500.11850/263260 doi:10.3929/ethz-b-000263260 info:eu-repo/semantics/openAccess http://rightsstatements.org/page/InC-NC/1.0/ In Copyright - Non-Commercial Use Permitted Monthly Notices of the Royal Astronomical Society, 476 (2) gravitational lensing: weak galaxies: clusters: general cosmic background radiation info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftethz https://doi.org/20.500.11850/26326010.3929/ethz-b-00026326010.1093/mnras/sty305 2023-10-01T23:50:28Z 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 17 per cent 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. ISSN:0035-8711 ISSN:1365-2966 Article in Journal/Newspaper South pole ETH Zürich Research Collection Monthly Notices of the Royal Astronomical Society 476 2 2674 2688 |
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Open Polar |
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ETH Zürich Research Collection |
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ftethz |
language |
English |
topic |
gravitational lensing: weak galaxies: clusters: general cosmic background radiation |
spellingShingle |
gravitational lensing: weak galaxies: clusters: general cosmic background radiation Baxter, E. J. Raghunathan, S. Crawford, T.M. Hartley, William G. A measurement of CMB cluster lensing with SPT and DES year 1 data |
topic_facet |
gravitational lensing: weak galaxies: clusters: general cosmic background radiation |
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 17 per cent 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. ISSN:0035-8711 ISSN:1365-2966 |
format |
Article in Journal/Newspaper |
author |
Baxter, E. J. Raghunathan, S. Crawford, T.M. Hartley, William G. |
author_facet |
Baxter, E. J. Raghunathan, S. Crawford, T.M. Hartley, William G. |
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 |
https://hdl.handle.net/20.500.11850/263260 https://doi.org/10.3929/ethz-b-000263260 |
genre |
South pole |
genre_facet |
South pole |
op_source |
Monthly Notices of the Royal Astronomical Society, 476 (2) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty305 info:eu-repo/semantics/altIdentifier/wos/000430940900094 http://hdl.handle.net/20.500.11850/263260 doi:10.3929/ethz-b-000263260 |
op_rights |
info:eu-repo/semantics/openAccess http://rightsstatements.org/page/InC-NC/1.0/ In Copyright - Non-Commercial Use Permitted |
op_doi |
https://doi.org/20.500.11850/26326010.3929/ethz-b-00026326010.1093/mnras/sty305 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
476 |
container_issue |
2 |
container_start_page |
2674 |
op_container_end_page |
2688 |
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1781068148710047744 |