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arXiv 1910.03353astro-ph.IM
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使用外差接收机的实验室新技术

New laboratory techniques using heterodyne receivers

Nadine Wehres, Kirill Borisov, Katharina von Schoeler, Patrick Pütz, Cornelia E. Honingh, Frank Lewen, Stephan Schlemmer

摘要:

两个实验室发射光谱仪已设计和描述之前。在这里,我们提出了一个后续的研究,特别关注新的SURFER光谱仪(亚毫米接收器旋转跃迁发射光谱)的绝对强度校准,在300和400 GHz之间运行,主要与ALMA(阿塔卡马大型毫米/亚毫米阵列)波段7一致。此外,我们提出了一个可行性研究,以延长检测频率高达2~THz。第一个结果已经获得使用SOFIA(平流层天文台红外天文学)upGREAT实验室设置在科隆大学。本文获得了氰乙烯络合物分子的纯转动谱,并利用它估计了在2~THz波段记录具有天体物理意义的分子的转振跃迁的灵敏度。

英文摘要:

Two laboratory emission spectrometers have been designed and described previously. Here, we present a follow-up study with special focus on absolute intensity calibration of the new SURFER-spectrometer (SUbmillimeter Receiver For Emission spectroscopy of Rotational transitions), operational between 300 and 400~GHz and mostly coincident with ALMA (Atacama Large Millimeter/submillimeter Array) Band 7. Furthermore, we present a feasibility study to extend the detection frequencies up to 2~THz. First results have been obtained using the SOFIA (Stratospheric Observatory for IR Astronomy) upGREAT laboratory setup at the University of Cologne. Pure rotational spectra of the complex molecule vinyl cyanide have been obtained and are used to give an estimate on the sensitivity to record ro-vibrational transitions of molecules with astrophysical importance at 2~THz.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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