S-band Polarization All Sky Survey (S-PASS)

Details S-band Polarization All Sky Survey (S-PASS) S-band Polarization All Sky Survey (S-PASS)

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atnf.prop.2538c&link_type=abstract

ATNF proposal P560, Semester: October, 2009

Astronomy and Astrophysics

Astrophysics

Interstellar Medium In And Around The Milky Way, Magnetic Fields, Parkes

Scientific paper

S-PASS is surveying the entire southern sky in polarization at the frequency of 2.3 GHz and is aimed at carrying out a full characterization of the synchrotron polarized emission for advancement of studies in the field of CMB cosmology and Galactic magnetism. WMAP results show that CMB polarization is severely contaminated by the synchrotron emission, making a careful determination of this astrophysical foreground mandatory to subtract it from CMB observations. The proposed survey will enable accurate cleaning of this contaminant, improving the limit with which CMB can measure cosmic Inflation parameters. S-PASS will provide an invaluable resource for magnetic field structure in the Galactic disc, halo, and their transition, giving us a first detailed look at the role of the magnetic field in these areas and at its evolution from the plane into the halo. Besides gaps because of either wind parks or system failures, the survey is expected to be completed in July 2009. This proposal regards the time request to fill gaps.

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