Galactic Foregrounds in Owens Valley Radio Observatory and UCSB South Pole 1994 Cosmic Microwave Background Anisotropy Data

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...

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Bibliographic Details
Published in:The Astrophysical Journal
Main Authors: Mukherjee, P., Dennison, B., Ratra, B., Simonetti, John H., Ganga, K., Hamilton, J. C.
Other Authors: Institute for Particle, Nuclear and Astronomical Sciences (IPNAS), Physics
Format: Article in Journal/Newspaper
Language:English
Published: IOP PUBLISHING LTD 2002
Subjects:
cosmic microwave background
cosmology : observations
diffuse
radiation
dust
extinction
dark-matter cosmogonies
spinning dust grains
h-alpha emission
measurement constraints
sky maps
infrared cirrus
tenerife data
scales
power
South Pole
South pole
Online Access:http://hdl.handle.net/10919/25853
http://iopscience.iop.org/0004-637X/579/1/83
https://doi.org/10.1086/342702
Description
Summary: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. NSF AST 98-00476, AST 00-98487, AST 98-75031 Horton Foundation Grant

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