Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..438..296s&link_type=abstract
The Dynamic Interstellar Medium: A Celebration of the Canadian Galactic Plane Survey. Proceedings of a conference held at the Na
Astronomy and Astrophysics
Astronomy
Scientific paper
Polarized emission from a source may undergo Faraday Rotation when passing through a medium with free electrons and a magnetic field. Observationally, we are able to measure the rotation measure (RM) of a source, which allows us to derive information about the strength of the magnetic field and free-electron density. Typically the determination of the rotation measure (RM) of a source requires observing in several separate frequency bands, in order to resolve the nπ ambiguity, as an unknown number of wraps could have occurred between frequency bands. We present an analysis to determine 37,543 RMs from the NRAO VLA Sky Survey (NVSS) using just two frequencies and bandwidth depolarization, and some results from the catalogue of rotation measures. We also perform source matching against optical catalogues in order to analyze the intrinsic properties of polarized sources.
Stil Jeroen
Sunstrum Caleb
Taylor Russ A.
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