宇宙微波背景辐射的大尺度极化与重联
天体物理学
2009-10-22 v2
摘要
我们讨论了物质重联对标准 CDM 模型下宇宙微波背景辐射（CMBR）大尺度各向异性与极化的影响。我们将其划分为纯标量、纯张量和混合度规扰动分别引起的各向异性。发现若重联发生足够早，极化可达顺序 、 和 的各向异性水平。一般而言，极化程度越高，表明张量模或在早期重联贡献占主导。由于早期重联将显著抑制小尺度 CMBR 各向异性与极化，测量少数角尺度的极化可直接探测早宇宙的重联历史。
引用
@article{arxiv.astro-ph/9412097,
title = {Large-angle Polarization of the Cosmic Microwave Background Radiation and Reionization},
author = {Ka Lok Ng and Kin-Wang Ng and 19 pages and latex and 10 figures and available upon request},
journal= {arXiv preprint arXiv:astro-ph/9412097},
year = {2009}
}
备注
Changes in the revised version: 1. Below Eq. (2), we demonstrate the method of our numerical work, by adding the evolution equations for the Legendre coefficents for both the scalar and tensor mode pertubations. 2. Below Eq. (9), we added a paragraph on discussing the basis we employed in computing the polarization correlation function. 3. In Sec. 4, we have rewritten the first and second paragraphs, where we illustrate how to the explain the discrepancies with the previous work