重力透鏡效應對宇宙微波背景輻射之影響

Gravitational Lensing Effect on Cosmic Microwave Background

王富正(Fu-Cheng Wang)

指導教授 ： 吳俊輝

國立臺灣大學/理學院/物理研究所/碩士(2004年)

https://doi.org/10.6342/NTU.2004.02162

摘要

無資料

關鍵字

重力透鏡效應 ； 重力透鏡 ； 偏極化,廣義相對論 ； 宇宙微波背景輻射

並列摘要

Matter distribution in the Universe can cause the gravitational lensing effect, which would contaminate the cosmic microwave background (CMB) pattern we have observed today. So we did the N-body simulation as the matter distribution in the Universe, combined with the ray-tracing method to simulate the gravitational lensing effect.
From observation we have found the anisotropy of temperature distribution, which means that there could be anisotropy of energy distribution on the last scattering surface. This implies that there are opportunities to find polarization in cosmic microwave background. Thus we also simulate the temperature, and polarization distribution pattern of cosmic microwave background with the help of the simulation code of my advisor. Add the gravitational lensing effect into the cosmic microwave background pattern, we found from the results that the CMB temperature and polarization are affected mainly in small scale.

並列關鍵字

gravitational lensing ； gravitational lensing effect ； cosmic microwave background,polarization ； relativity ； lenses

參考文獻

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\bibitem{7} Martin White, Chris Vale, Simulations of weak gravitational lensing, astro-ph/031133

\bibitem{8} Premana Premadi, Hugo Martel, Richard Matzner, Toshifumi Futamase Light propagation in inhomogeneous Universe II. Cosmological parameter survey, astro-ph/0101359

\bibitem{9} H.M.P Couchman, P.A. Thomas, F.R. Pearce, Hydra : an adaptive-mesh implementation of P3m-SPH, APJ 1995 452 797-813