Galactic foregrounds in Owens Valley Radio Observatory and UCSB South Pole 1994 cosmic microwave background anisotropy data

被引:12
作者
Mukherjee, P
Dennison, B
Ratra, B
Simonetti, JH
Ganga, K
Hamilton, JC
机构
[1] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA
[2] Virginia Polytech Inst & State Univ, Dept Phys, Blacksburg, VA 24061 USA
[3] Virginia Polytech Inst & State Univ, Inst Particle Phys & Astrophys, Martin Observ, Blacksburg, VA 24061 USA
[4] CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA
[5] Coll France, F-75231 Paris, France
[6] Inst Sci Nucl Grenoble, F-38026 Grenoble, France
基金
美国国家科学基金会;
关键词
cosmic microwave background; cosmology : observations; diffuse radiation; dust; extinction;
D O I
10.1086/342702
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We study Galactic emission foreground contamination of the Owens Valley Radio Observatory and UCSB South Pole 1994 cosmic microwave background anisotropy data by cross-correlating with templates of infrared dust emission and new high-resolution Virginia Tech Spectral Line Survey (VTSS) and Southern Halpha Sky Survey Atlas (SHASSA) Halpha data. Halpha data provide rough upper limits on the level of free-free emission in the data sets. The cross-correlation analysis does not contradict a two-component foreground emission hypothesis, with the two dust-correlated components being free-free emission and spinning-dust emission.
引用
收藏
页码:83 / 92
页数:10
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