Galactic foregrounds and CMB polarization
arXiv:1008.4983
Abstract
The CMB polarization promises to unveil the dawn of time measuring the gravitational wave background emitted by the Inflation. The CMB signal is faint, however, and easily contaminated by the Galactic foreground emission, accurate measurements of which are thus crucial to make CMB observations successful. We review the CMB polarization properties and the current knowledge on the Galactic synchrotron emission, which dominates the foregrounds budget at low frequency. We then focus on the S-Band Polarization All Sky Survey (S-PASS), a recently completed survey of the entire southern sky designed to investigate the Galactic CMB foreground.
13 pages, 10 figures, to appear in "The Dynamic ISM: A celebration of the Canadian Galactic Plane Survey," ASP Conference Series
References in corpus (8)
- HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
- Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
- A Robotic Wide-Angle H-Alpha Survey of the Southern Sky
- An absolutely calibrated survey of polarized emission from the northern sky at 1.4 GHz
- Detectability of Inflationary Gravitational Waves with Microwave Background Polarization
- Inflationary predictions for scalar and tensor fluctuations reconsidered
- High Galactic latitude polarized emission at 1.4 GHz and implications for cosmic microwave background observations
- Detectability of tensor modes in the presence of foregrounds