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Paper: Polarization with the Submillimeter Array (SMA)
Volume: 343, Astronomical Polarimetry: Current Status and Future Directions
Page: 59
Authors: Rao, R.; Marrone, D.P.
Abstract: Polarimetry at far-infrared, submillimeter and millimeter wavelengths is an important probe of the magnetic field structure in astronomical sources. Most previous polarization observations have been conducted with single dish telescopes which have limited angular resolution (greater than 10″). Interferometer arrays can provide higher angular resolution (about 1″), but current arrays can only make polarization observations at frequencies up to 230 GHz. We present here the details of a proposed 345 GHz polarimetry system for the Submillimeter Array, an 8-element interferometer on Mauna Kea. This system will provide the first submillimeter polarization images at high angular resolution. Initial results from full-system tests in April and May 2004 are reported. Scientific observations have also begun and should expand over the remainder of the year. In the future the Submillimeter Array will be upgraded with dual polarization capable receivers and thus become a powerful instrument for mapping the magnetic field structure.
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