Physics
Scientific paper
Apr 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atnf.prop.2298h&link_type=abstract
ATNF proposal P624, Semester: April, 2009
Physics
Galactic, Parkes
Scientific paper
This is the third semester proposal for the large project P624, the Southern Twenty-centimeter All-sky Polarization Survey (STAPS), a 1.4GHz broadband all-sky survey piggy-backing on the 2.3GHz survey S-PASS (P560). STAPS/S-PASS take data in long azimuth scans at fixed elevation. Starting times of scans are determined exactly, so that scans cover adjacent bands across the sky, eventually resulting in a Nyquist-coverage of the southern sky. The science goals of STAPS focus on the Galactic interstellar medium and magnetism. Using rotation measure synthesis, we can disentangle synchrotron emitting and Faraday rotating sources along the line of sight, allowing a new view of the polarized radio sky. The data will be used to advance models of the large-scale Galactic magnetic field, for characterization of depolarization and interstellar turbulence and for studies of magnetism in discrete structures such as supernova remnants. On- and off-axis instrumental polarization will be characterized and removed. Initial calibration indicates on-axis instrumental polarization of about one percent, which is expected to go down using more sophisticated calibration methods.
Carretti Ettore
Gaensler Bryan
Haverkorn Marijke
Heiles Carl
Kesteven Michael
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