Research on Power Spectrum and Sunyaev-Zel''dolvich effect of Cosmic Microwave Background
博士 === 國立臺灣大學 === 天文物理研究所 === 99 === This dissertation contains two parts : estimation of Cosmic Microwave Background (CMB) power spectrum with data from Maxipol and WMAP experiments, and investigation of cluster property through the Sunyaev-Zel’dovich effect. In the first part, we cross correlate t...
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ndltd-TW-099NTU051990092015-10-16T04:03:08Z http://ndltd.ncl.edu.tw/handle/97634145629059826155 Research on Power Spectrum and Sunyaev-Zel''dolvich effect of Cosmic Microwave Background 宇宙微波背景頻譜與SZ效應之研究 Fu-Cheng Wang 王富正 博士 國立臺灣大學 天文物理研究所 99 This dissertation contains two parts : estimation of Cosmic Microwave Background (CMB) power spectrum with data from Maxipol and WMAP experiments, and investigation of cluster property through the Sunyaev-Zel’dovich effect. In the first part, we cross correlate the CMB polarization maps from Maxipol and the temperature map from WMAP to estimate the CMB power spectrum, using Markov Chain Monte Carlo (MCMC) method to deliver the maximum-likelihood analysis. Simulations are heavily invoked to justify our analysis pipeline. Detailed calculation of likelihood function and some numerical issues are discussed. We show that our results are consistent with previous results, and the key for improvement is the data quality. In part II we describe the decade project AMiBA, with particular address on how a multi-frequency analysis can provide better constraint on the properties of galaxy clusters. We first describe the project in several aspects, including the observation strategy, data reduction, and data quality control. Data of the Sunyaev-Zel’dovich effect from AMiBA and several other experiments are then combined to deliver the multi-frequency analysis, yielding better estimation for the central Compton parameter and peculiar velocity for clusters A2163 and A2390. The future of the work presented here is also addressed. 吳俊輝 2011 學位論文 ; thesis 75 en_US |
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博士 === 國立臺灣大學 === 天文物理研究所 === 99 === This dissertation contains two parts : estimation of Cosmic Microwave Background (CMB) power spectrum with
data from Maxipol and WMAP experiments, and investigation of cluster property through
the Sunyaev-Zel’dovich effect. In the first part, we cross correlate the CMB polarization maps from
Maxipol and the temperature map from WMAP to estimate the CMB power spectrum,
using Markov Chain Monte Carlo (MCMC) method to deliver the maximum-likelihood analysis.
Simulations are heavily invoked to justify our analysis pipeline. Detailed calculation of likelihood function
and some numerical issues are discussed. We show that our results are consistent with
previous results, and the key for improvement is the data quality.
In part II we describe the decade project AMiBA, with particular address on how a multi-frequency analysis
can provide better constraint on the properties of galaxy clusters.
We first describe the project in several aspects, including the observation strategy, data reduction, and data quality control.
Data of the Sunyaev-Zel’dovich effect from AMiBA and several other experiments are then combined
to deliver the multi-frequency analysis, yielding better estimation for the central Compton parameter and peculiar velocity
for clusters A2163 and A2390.
The future of the work presented here is also addressed.
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author2 |
吳俊輝 |
author_facet |
吳俊輝 Fu-Cheng Wang 王富正 |
author |
Fu-Cheng Wang 王富正 |
spellingShingle |
Fu-Cheng Wang 王富正 Research on Power Spectrum and Sunyaev-Zel''dolvich effect of Cosmic Microwave Background |
author_sort |
Fu-Cheng Wang |
title |
Research on Power Spectrum and Sunyaev-Zel''dolvich effect of Cosmic Microwave Background |
title_short |
Research on Power Spectrum and Sunyaev-Zel''dolvich effect of Cosmic Microwave Background |
title_full |
Research on Power Spectrum and Sunyaev-Zel''dolvich effect of Cosmic Microwave Background |
title_fullStr |
Research on Power Spectrum and Sunyaev-Zel''dolvich effect of Cosmic Microwave Background |
title_full_unstemmed |
Research on Power Spectrum and Sunyaev-Zel''dolvich effect of Cosmic Microwave Background |
title_sort |
research on power spectrum and sunyaev-zel''dolvich effect of cosmic microwave background |
publishDate |
2011 |
url |
http://ndltd.ncl.edu.tw/handle/97634145629059826155 |
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