Sunyaev–Zel’dovich effect and X-ray scaling relations from weak lensing mass calibration of 32 South Pole Telescope selected galaxy clusters
© 2018 The Author(s). Uncertainty in mass-observable scaling relations is currently the limiting factor for galaxycluster-based cosmology. Weak gravitational lensing can provide direct mass calibration and reduce the mass uncertainty. We present new ground-based weak lensing observations of 19 South...
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ftmit:oai:dspace.mit.edu:1721.1/132338 2023-06-11T04:16:45+02:00 Sunyaev–Zel’dovich effect and X-ray scaling relations from weak lensing mass calibration of 32 South Pole Telescope selected galaxy clusters 2020-11-04T16:51:48Z application/pdf https://hdl.handle.net/1721.1/132338 en eng Oxford University Press (OUP) 10.1093/MNRAS/STY3088 Monthly Notices of the Royal Astronomical Society https://hdl.handle.net/1721.1/132338 Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ arXiv Article http://purl.org/eprint/type/JournalArticle 2020 ftmit 2023-05-29T07:31:36Z © 2018 The Author(s). Uncertainty in mass-observable scaling relations is currently the limiting factor for galaxycluster-based cosmology. Weak gravitational lensing can provide direct mass calibration and reduce the mass uncertainty. We present new ground-based weak lensing observations of 19 South Pole Telescope (SPT) selected clusters at redshifts 0.29 = z = 0.61 and combine them with previously reported space-based observations of 13 galaxy clusters at redshifts 0.576 = z = 1.132 to constrain the cluster mass scaling relations with the Sunyaev-Zel'dovich effect (SZE), the cluster gas mass Mgas and YX, the product of Mgas and X-ray temperature. We extend a previously used framework for the analysis of scaling relations and cosmological constraints obtained from SPT-selected clusters to make use of weak lensing information. We introduce a new approach to estimate the effective average redshift distribution of background galaxies and quantify a number of systematic errors affecting the weak lensing modelling. These errors include a calibration of the bias incurred by fitting a Navarro-Frenk-White profile to the reduced shear using N-body simulations. We blind the analysis to avoid confirmation bias. We are able to limit the systematic uncertainties to 5.6% in cluster mass (68% confidence). Our constraints on the mass-X-ray observable scaling relation parameters are consistent with those obtained by earlier studies and our constraints for the mass-SZE scaling relation are consistent with the simulation-based prior used in the most recent SPT-SZ cosmology analysis. We can now replace the external mass calibration priors used in previous SPT-SZ cosmology studies with a direct, internal calibration obtained for the same clusters. Article in Journal/Newspaper South pole DSpace@MIT (Massachusetts Institute of Technology) Navarro ENVELOPE(-62.167,-62.167,-64.650,-64.650) New Ground ENVELOPE(-55.215,-55.215,49.567,49.567) South Pole |
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DSpace@MIT (Massachusetts Institute of Technology) |
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ftmit |
language |
English |
description |
© 2018 The Author(s). Uncertainty in mass-observable scaling relations is currently the limiting factor for galaxycluster-based cosmology. Weak gravitational lensing can provide direct mass calibration and reduce the mass uncertainty. We present new ground-based weak lensing observations of 19 South Pole Telescope (SPT) selected clusters at redshifts 0.29 = z = 0.61 and combine them with previously reported space-based observations of 13 galaxy clusters at redshifts 0.576 = z = 1.132 to constrain the cluster mass scaling relations with the Sunyaev-Zel'dovich effect (SZE), the cluster gas mass Mgas and YX, the product of Mgas and X-ray temperature. We extend a previously used framework for the analysis of scaling relations and cosmological constraints obtained from SPT-selected clusters to make use of weak lensing information. We introduce a new approach to estimate the effective average redshift distribution of background galaxies and quantify a number of systematic errors affecting the weak lensing modelling. These errors include a calibration of the bias incurred by fitting a Navarro-Frenk-White profile to the reduced shear using N-body simulations. We blind the analysis to avoid confirmation bias. We are able to limit the systematic uncertainties to 5.6% in cluster mass (68% confidence). Our constraints on the mass-X-ray observable scaling relation parameters are consistent with those obtained by earlier studies and our constraints for the mass-SZE scaling relation are consistent with the simulation-based prior used in the most recent SPT-SZ cosmology analysis. We can now replace the external mass calibration priors used in previous SPT-SZ cosmology studies with a direct, internal calibration obtained for the same clusters. |
format |
Article in Journal/Newspaper |
title |
Sunyaev–Zel’dovich effect and X-ray scaling relations from weak lensing mass calibration of 32 South Pole Telescope selected galaxy clusters |
spellingShingle |
Sunyaev–Zel’dovich effect and X-ray scaling relations from weak lensing mass calibration of 32 South Pole Telescope selected galaxy clusters |
title_short |
Sunyaev–Zel’dovich effect and X-ray scaling relations from weak lensing mass calibration of 32 South Pole Telescope selected galaxy clusters |
title_full |
Sunyaev–Zel’dovich effect and X-ray scaling relations from weak lensing mass calibration of 32 South Pole Telescope selected galaxy clusters |
title_fullStr |
Sunyaev–Zel’dovich effect and X-ray scaling relations from weak lensing mass calibration of 32 South Pole Telescope selected galaxy clusters |
title_full_unstemmed |
Sunyaev–Zel’dovich effect and X-ray scaling relations from weak lensing mass calibration of 32 South Pole Telescope selected galaxy clusters |
title_sort |
sunyaev–zel’dovich effect and x-ray scaling relations from weak lensing mass calibration of 32 south pole telescope selected galaxy clusters |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
https://hdl.handle.net/1721.1/132338 |
long_lat |
ENVELOPE(-62.167,-62.167,-64.650,-64.650) ENVELOPE(-55.215,-55.215,49.567,49.567) |
geographic |
Navarro New Ground South Pole |
geographic_facet |
Navarro New Ground South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
arXiv |
op_relation |
10.1093/MNRAS/STY3088 Monthly Notices of the Royal Astronomical Society https://hdl.handle.net/1721.1/132338 |
op_rights |
Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ |
_version_ |
1768375331146694656 |