| Observation number correlation in WMAP data | |
| Li, Ti-Pei ; Liu, Hao ; Song, Li-Ming ; Xiong, Shao-Lin ; Nie, Jian-Yin | |
| 2010-10-12 ; 2010-10-12 | |
| 关键词 | methods: data analysis cosmic microwave background cosmology: observations SYSTEMATIC-ERROR LIMITS ANISOTROPY-PROBE DATA RADIOMETER CHARACTERIZATION MICROWAVE ANOMALIES ISOTROPY MAPS ALIGNMENT FIELD SKY Astronomy & Astrophysics |
| 中文摘要 | A remarkable similarity between the large-scale non-Gaussian pattern of cosmic microwave background (CMB) temperatures obtained by the Wilkinson Microwave Anisotropy Probe (WMAP) mission and the distribution features of observation numbers is noted. Motivated by such a similarity, in this work we check the WMAP data for the correlation between pixel temperature t and observation number N. Systematic effects of imbalance in the differential observations and significant t-N correlations in magnitude, distribution of non-Gaussianity and north-south asymmetry are found. Our results indicate that, for precision cosmology studies based on WMAP observations, the observation effect on released WMAP temperature maps requires further careful study. |
| 语种 | 英语 ; 英语 |
| 出版者 | WILEY-BLACKWELL PUBLISHING, INC ; MALDEN ; COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/81643]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Li, Ti-Pei,Liu, Hao,Song, Li-Ming,et al. Observation number correlation in WMAP data[J],2010, 2010. |
| APA | Li, Ti-Pei,Liu, Hao,Song, Li-Ming,Xiong, Shao-Lin,&Nie, Jian-Yin.(2010).Observation number correlation in WMAP data.. |
| MLA | Li, Ti-Pei,et al."Observation number correlation in WMAP data".(2010). |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论