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, Seiji Kameno, Izumi Mizuno, Izumi Mizuno, Fumitaka Nakamura, Fumitaka Nakamura, Makoto Kuroo, Makoto Kuroo, Amane Kano, Amane Kano, Noriyuki Kawaguchi, Noriyuki Kawaguchi, Katsunori M. Shibata, Katsunori M. Shibata, Nario Kuno, Nario Kuno, Shuro Takano, Shuro Takano, Seisuke Kuji, 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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