IHEP OpenIR  > 粒子天体物理中心
SIGNIFICANT FOREGROUND UNRELATED NON-ACOUSTIC ANISOTROPY ON THE 1 DEGREE SCALE IN WILKINSON MICROWAVE ANISOTROPY PROBE 5-YEAR OBSERVATIONS
Jiang, BZ; Lieu, R; Zhang SN(张双南); Zhang, SN; Wakker, B
2010
发表期刊ASTROPHYSICAL JOURNAL
卷号708期号:1页码:375-380
通讯作者[Jiang, Bi-Zhu ; Zhang, Shuang-Nan] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China ; [Jiang, Bi-Zhu ; Zhang, Shuang-Nan] Tsinghua Univ, Ctr Astrophys, Beijing 100084, Peoples R China ; [Jiang, Bi-Zhu ; Lieu, Richard ; Zhang, Shuang-Nan] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA ; [Zhang, Shuang-Nan] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing, Peoples R China ; [Wakker, Bart] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA
摘要The spectral variation of the cosmic microwave background (CMB) as observed by WMAP was tested using foreground reduced WMAP5 data, by producing subtraction maps at the 1 degrees angular resolution between the two cosmological bands of V and W, for masked sky areas that avoid the Galactic disk. The resulting V-W map revealed a non-acoustic signal over and above the WMAP5 pixel noise, with two main properties. First, it possesses quadrupole power at the approximate to 1 mu K level which may be attributed to foreground residuals. Second, it fluctuates also at all values of l > 2, especially on the 1 degrees scale (200 less than or similar to l less than or similar to 300). The behavior is random and symmetrical about zero temperature with an rms approximate to 7 mu K, or 10% of the maximum CMB anisotropy, which would require a "cosmic conspiracy" among the foreground components if it is a consequence of their existence. Both anomalies must be properly diagnosed and corrected if "precision" cosmology is the claim. The second anomaly is, however, more interesting because it opens the question on whether the CMB anisotropy genuinely represents primordial density seeds.
文章类型Article
关键词cosmic microwave background ISM: clouds methods: data analysis
学科领域Astronomy & Astrophysics
DOI10.1088/0004-637X/708/1/375
研究领域[WOS]Astronomy & Astrophysics
URL查看原文
语种英语
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000272790400033
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237225
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Jiang, BZ,Lieu, R,Zhang SN,et al. SIGNIFICANT FOREGROUND UNRELATED NON-ACOUSTIC ANISOTROPY ON THE 1 DEGREE SCALE IN WILKINSON MICROWAVE ANISOTROPY PROBE 5-YEAR OBSERVATIONS[J]. ASTROPHYSICAL JOURNAL,2010,708(1):375-380.
APA Jiang, BZ,Lieu, R,张双南,Zhang, SN,&Wakker, B.(2010).SIGNIFICANT FOREGROUND UNRELATED NON-ACOUSTIC ANISOTROPY ON THE 1 DEGREE SCALE IN WILKINSON MICROWAVE ANISOTROPY PROBE 5-YEAR OBSERVATIONS.ASTROPHYSICAL JOURNAL,708(1),375-380.
MLA Jiang, BZ,et al."SIGNIFICANT FOREGROUND UNRELATED NON-ACOUSTIC ANISOTROPY ON THE 1 DEGREE SCALE IN WILKINSON MICROWAVE ANISOTROPY PROBE 5-YEAR OBSERVATIONS".ASTROPHYSICAL JOURNAL 708.1(2010):375-380.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
3577.pdf(1151KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Jiang, BZ]的文章
[Lieu, R]的文章
[张双南]的文章
百度学术
百度学术中相似的文章
[Jiang, BZ]的文章
[Lieu, R]的文章
[张双南]的文章
必应学术
必应学术中相似的文章
[Jiang, BZ]的文章
[Lieu, R]的文章
[张双南]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。