Galactic Foregrounds in Owens Valley Radio Observatory and UCSB South Pole 1994 Cosmic Microwave Background Anisotropy Data
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Date
2002-11
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IOP PUBLISHING LTD
Abstract
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.
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Keywords
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, radiation, scales, power
Citation
Pia Mukherjee et al. 2002 ApJ 579 83 doi:10.1086/342702