Projected two-dimensional map of baryonic fraction for galaxy clusters

• Main Authors: Shang-Ping Pai, 白尚平
• Other Authors: Jiun-Huei Wu
• Format: Others
• Language: en_US
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/13545321367371500167

碩士 === 國立臺灣大學 === 天文物理研究所 === 105 === We demonstrate a new method to produce the projected 2D baryonic-fraction maps of galaxy clusters. In this work, the projected 2D baryonic-fraction maps are obtained by processing the images from Sunyaev-Zel''dovich effect and the kappa maps from gravitational lensing directly. The data we use are from two sources: (1) Array for Microwave Background Anisotropy (AMiBA) Sunyaev-Zel''dovich effect observations and (2) results from gravitational lensing analysis in Canada France Hawaii Telescope (CFHT) data and Hubble Space Telescope (HST) data of the Cluster Lensing And Supernova survey with Hubble (CLASH) sample combined with X-ray temperature. For the purpose of facilitating comparison, we use numerical simulations to reconstruct the cold dark matter halo in the clusters with NFW model and the intracluster medium (ICM) with KS01 model.