Bayesian analysis of weak gravitational lensing and Sunyaev-Zel'dovich data for six galaxy clusters
We present an analysis of observations made with the Arcminute Microkelvin Imager (AMI) and the CanadaFranceHawaii Telescope (CFHT) of six galaxy clusters in a redshift range of 0.160.41. The cluster gas is modelled using the SunyaevZeldovich (SZ) data provided by AMI, while the total mass is modell...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Oxford University Press
2012
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/38029 |
| _version_ | 1848755208728870912 |
|---|---|
| author | Hurley-Walker, Natasha Bridle, S. Cypriano, E. Davies, M. Erben, T. Feroz, F. Franzen, Thomas Grainge, K. Hobson, M. Lasenby, A. Marshall, P. Olamaie, M. Pooley, G. Rodriguez-Gonzalvez, C. Saunders, R. Scaife, A. Schammel, M. Scott, P. Shimwell, T. Titterington, D. Waldram, E. Zwart, J. |
| author_facet | Hurley-Walker, Natasha Bridle, S. Cypriano, E. Davies, M. Erben, T. Feroz, F. Franzen, Thomas Grainge, K. Hobson, M. Lasenby, A. Marshall, P. Olamaie, M. Pooley, G. Rodriguez-Gonzalvez, C. Saunders, R. Scaife, A. Schammel, M. Scott, P. Shimwell, T. Titterington, D. Waldram, E. Zwart, J. |
| author_sort | Hurley-Walker, Natasha |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present an analysis of observations made with the Arcminute Microkelvin Imager (AMI) and the CanadaFranceHawaii Telescope (CFHT) of six galaxy clusters in a redshift range of 0.160.41. The cluster gas is modelled using the SunyaevZeldovich (SZ) data provided by AMI, while the total mass is modelled using the lensing data from the CFHT. In this paper, we (i) find very good agreement between SZ measurements (assuming large-scale virialization and a gas-fraction prior) and lensing measurements of the total cluster masses out to r200; (ii) perform the first multiple-component weak-lensing analysis of A115; (iii) confirm the unusual separation between the gas and mass components in A1914 and (iv) jointly analyse the SZ and lensing data for the relaxed cluster A611, confirming our use of a simulation-derived masstemperature relation for parametrizing measurements of the SZ effect. |
| first_indexed | 2025-11-14T08:52:39Z |
| format | Journal Article |
| id | curtin-20.500.11937-38029 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:52:39Z |
| publishDate | 2012 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-380292017-09-13T14:09:28Z Bayesian analysis of weak gravitational lensing and Sunyaev-Zel'dovich data for six galaxy clusters Hurley-Walker, Natasha Bridle, S. Cypriano, E. Davies, M. Erben, T. Feroz, F. Franzen, Thomas Grainge, K. Hobson, M. Lasenby, A. Marshall, P. Olamaie, M. Pooley, G. Rodriguez-Gonzalvez, C. Saunders, R. Scaife, A. Schammel, M. Scott, P. Shimwell, T. Titterington, D. Waldram, E. Zwart, J. galaxies gravitational lensing clusters non-thermal radiation mechanisms cosmic background radiation weak cosmology general observations We present an analysis of observations made with the Arcminute Microkelvin Imager (AMI) and the CanadaFranceHawaii Telescope (CFHT) of six galaxy clusters in a redshift range of 0.160.41. The cluster gas is modelled using the SunyaevZeldovich (SZ) data provided by AMI, while the total mass is modelled using the lensing data from the CFHT. In this paper, we (i) find very good agreement between SZ measurements (assuming large-scale virialization and a gas-fraction prior) and lensing measurements of the total cluster masses out to r200; (ii) perform the first multiple-component weak-lensing analysis of A115; (iii) confirm the unusual separation between the gas and mass components in A1914 and (iv) jointly analyse the SZ and lensing data for the relaxed cluster A611, confirming our use of a simulation-derived masstemperature relation for parametrizing measurements of the SZ effect. 2012 Journal Article http://hdl.handle.net/20.500.11937/38029 10.1111/j.1365-2966.2011.19937.x Oxford University Press fulltext |
| spellingShingle | galaxies gravitational lensing clusters non-thermal radiation mechanisms cosmic background radiation weak cosmology general observations Hurley-Walker, Natasha Bridle, S. Cypriano, E. Davies, M. Erben, T. Feroz, F. Franzen, Thomas Grainge, K. Hobson, M. Lasenby, A. Marshall, P. Olamaie, M. Pooley, G. Rodriguez-Gonzalvez, C. Saunders, R. Scaife, A. Schammel, M. Scott, P. Shimwell, T. Titterington, D. Waldram, E. Zwart, J. Bayesian analysis of weak gravitational lensing and Sunyaev-Zel'dovich data for six galaxy clusters |
| title | Bayesian analysis of weak gravitational lensing and Sunyaev-Zel'dovich data for six galaxy clusters |
| title_full | Bayesian analysis of weak gravitational lensing and Sunyaev-Zel'dovich data for six galaxy clusters |
| title_fullStr | Bayesian analysis of weak gravitational lensing and Sunyaev-Zel'dovich data for six galaxy clusters |
| title_full_unstemmed | Bayesian analysis of weak gravitational lensing and Sunyaev-Zel'dovich data for six galaxy clusters |
| title_short | Bayesian analysis of weak gravitational lensing and Sunyaev-Zel'dovich data for six galaxy clusters |
| title_sort | bayesian analysis of weak gravitational lensing and sunyaev-zel'dovich data for six galaxy clusters |
| topic | galaxies gravitational lensing clusters non-thermal radiation mechanisms cosmic background radiation weak cosmology general observations |
| url | http://hdl.handle.net/20.500.11937/38029 |