摘要
微波背景观测与早期宇宙研究尚处于学科发展的初期阶段,对探测方法、背景(前景)处理、系统误差及结果可靠性的认识都有待深入.发现微波探测卫星WMAP公布的宇宙微波背景辐射温度图存在严重的系统误差后,几年来我们重新进行了数据分析,修正了时钟同步、天线旁瓣误差导致的伪偶极信号,得到的背景辐射温度图和功率谱与WMAP发布的结果有重大差异,引起了广泛关注,讨论和争论.本文概述有关工作及论争的过程与现状,及其对于早期宇宙研究的影响.
Recent years we have found there notably exist systematic errors in published WMAP temperature maps, which pushed us forward to reprocess the WMAP raw data. After removing the pseudo-dipole signal generated by the asynchronous between the attitude and science data and the antenna sidelobe response to the Doppler signal, we have obtained improved CMB maps and angular power spectrum, which are significantly different with WMAP releases and induce widely intention and debating. In this paper we introduce their development and current status and discuss possible influence on the study of the early universe.
出处
《中国科学：物理学、力学、天文学》
CSCD
北大核心
2011年第4期478-482,共5页
Scientia Sinica Physica,Mechanica & Astronomica
基金
国家自然科学基金资助项目(批准号:11033003)
关键词
观测宇宙学
微波背景辐射
早期宇宙
observational cosmology
cosmic microwave background
early universe
