23 July 2014 The software-based polarization spectrometer PolariS
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Abstract
We report the development of the software-based polarization spectrometer‘ PolariS ’and early results from commissioning on the Nobeyama 45-m radio telescope. PolariS aims to detect the Zeeman effect of CCS line to measure ~ 100 μG magnetic fields in star-forming molecular cores. The PolariS consists of the K5/VSSP32 digitizer and a Linux-based PC with a GPU to process full-Stokes spectroscopy of 2 x 131072 ch for bandwidth of 4 or 8 MHz. We have verified performance of PolariS and succeeded to take full-stokes spectra of SiO masers. Since the code is open at GitHub everybody can utilize it.
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Seiji Kameno, Izumi Mizuno, Fumitaka Nakamura, Makoto Kuroo, Amane Kano, Noriyuki Kawaguchi, Katsunori M. Shibata, Nario Kuno, Shuro Takano, Seisuke Kuji, "The software-based polarization spectrometer PolariS", Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, 91532D (23 July 2014); doi: 10.1117/12.2055205; https://doi.org/10.1117/12.2055205
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