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

来源：

ASTROPHYSICAL JOURNAL | 2002年 / 579卷 / 01期

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

页码：83 / 92

页数：10

共 60 条

[1] Noncosmological signal contributions to the COBE DMR 4 year sky maps [J].