Simulation on Interferometric Observation of Galaxy Cluster through The Sunyaev-Zel''dovich Effect

• Main Authors: LIN, KAI-YANG, 林凱揚
• Other Authors: CHIUEH, TZIHONG
• Format: Others
• Language: en_US
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/63031826919231131000

碩士 === 國立臺灣大學 === 物理學研究所 === 89 === We use N-body simulation(GADGET) to find out the cluster SZ effect in the case clusters are not point sources to the telescope. We find the simulation result of gas properties of clusters is in good agreement with either a theoretical model or with an observation. Further, we adopt the AMiBA resolution and use a 2'' circular filter as the point-spread-function (psf) to capture SZE signals from the bound halos that range in mass from $4\times 10^{13}\sim 2\times 10^{15}$ $h^{-1}M_{\odot}$. When the psf is centered on the strongest part of a halo, the resulting signal, to be called $S_{peak}$, has quite a remarkable correlation with its mass, namely, $S_{peak}\propto M^{1.4}$. This relation can help predict a more realistic number count of clusters in an SZE survey.