Early Results from SPARO: Instrument Characterization and Polarimetry of NGC 6334
Early Results from SPARO: Instrument Characterization and Polarimetry of NGC 6334
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SPARO 的早期结果：NGC 6334 的仪器表征和旋光测量
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
R. Pernic
中科院分区：
文献类型：
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作者：
T. Renbarger;D. Chuss;J. L. Dotson;G. Griffin;J. L. Hanna;R. Loewenstein;P. Malhotra;J. Marshall;G. Novak;R. Pernic
用于南极远程观测的亚毫米偏振计（SPARO）采用两个9元3He冷却热辐射计阵列来测量λ = 450 μm处的线偏振。它是在位于阿蒙森-斯科特南极站的毒蛇望远镜的焦平面上操作的。SPARO对度尺度偏振亚毫米发射的灵敏度比目前任何其他实验都高。我们描述了SPARO的光学，探测器和电子设计。我们还回顾了SPARO低温恒温器的设计，这在之前的论文中已经讨论过了。本文讨论了SPARO和Viper在2000年南极观测中的表现，并给出了SPARO对NGC 6334的偏振观测结果。最后，我们将这些观测结果与加州理工学院亚毫米天文台和詹姆斯·克拉克·麦克斯韦望远镜的亚毫米偏振观测结果进行了比较，并讨论了这三个数据集对NGC 6334磁场的影响。
The Submillimeter Polarimeter for Antarctic Remote Observations (SPARO) employs two nine‐element arrays of 3He‐cooled bolometers to measure linear polarization at λ = 450 μm. It is operated at the focal plane of the Viper telescope, located at the Amundsen‐Scott South Pole Station. SPARO obtains better sensitivity to degree‐scale polarized submillimeter emission than can be currently achieved with any other experiment. We describe the design of SPARO’s optics, detectors, and electronics. We also review the design of the SPARO cryostat, which has already been discussed in a previous paper. We discuss the performance of SPARO and Viper during observations at the South Pole in 2000, and we present polarimetric observations of NGC 6334 made with SPARO. Finally, we compare these observations with submillimeter polarimetric observations of the same source made at the Caltech Submillimeter Observatory and the James Clerk Maxwell Telescope, and we discuss the implications of these three data sets for the magnetic field in NGC 6334.