8-12 juin, 2014

Résumé

Measuring Polarization in OMC2 with the Four-Stokes-Parameter Spectral Line Polarimeter

Scott Jones (Western University)

Martin Houde, Western University Talayeh Hezareh, Max-Planck-Institut fur Radioastronomie

Over the past couple years, we have had several observing runs to the Caltech Submillimetre Observatory (CSO) atop Mauna Kea, Hawaii. During this time we have acquired a large set of both linear and circular polarization data at a number of different frequencies, of a particular sub-cloud within the star-forming Orion Molecular Cloud (OMC) complex. Historically, this area has been peculiar in its lack of any polarization, something that is unique within the broader complex. As a first attempt to explain this discrepancy, we have obtained polarization maps across this subregion with the Western-built, Four-Stokes-Parameter Spectral Line Polarimeter (FSPPol). These measurements represent the first foray into mapping of any kind with FSPPol, and as such, I will focus largely on the techniques that have been employed towards realizing a polarization signal.

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