Galactic Foregrounds in OVRO and UCSB South Pole 1994 Cosmic Microwave Background Anisotropy Data

Pia Mukherjee; Brian Dennison; Bharat Ratra; John H. Simonetti; Ken Ganga; Jean-Christophe Hamilton

doi:10.1086/342702

Galactic Foregrounds in OVRO and UCSB South Pole 1994 Cosmic Microwave Background Anisotropy Data

Astrophysics 2009-11-07 v2

Authors: Pia Mukherjee , Brian Dennison , Bharat Ratra , John H. Simonetti , Ken Ganga , Jean-Christophe Hamilton

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Abstract

We study Galactic emission foreground contamination of the OVRO and UCSB South Pole 1994 cosmic microwave background (CMB) anisotropy data by cross-correlating with templates of infrared dust emission and new high resolution $H_{\alpha}$ data. $H_{\alpha}$ 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.

Keywords

cosmic microwave background Galactic foregrounds dust emission free-free emission spinning dust cross-correlation H-alpha

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@article{arxiv.astro-ph/0110457,
  title  = {Galactic Foregrounds in OVRO and UCSB South Pole 1994 Cosmic Microwave Background Anisotropy Data},
  author = {Pia Mukherjee and Brian Dennison and Bharat Ratra and John H. Simonetti and Ken Ganga and Jean-Christophe Hamilton},
  journal= {arXiv preprint arXiv:astro-ph/0110457},
  year   = {2009}
}

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21 pages, 3 figures, ApJ, in press

Galactic Foregrounds in OVRO and UCSB South Pole 1994 Cosmic Microwave Background Anisotropy Data

Abstract

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