Extended Q-band (eQ) receiver for Nobeyama 45-m Telescope-猫眼课题宝

DOI：

10.1117/12.2629811

发表时间：

2022-08

期刊：

影响因子：

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其他

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作者：

Chau-Ching Chiong;F. Nakamura;Atsushi Nishimura;R. Burns;Chen Chien;K. Dobashi;Y. Fujii;Chin-Ting Ho;Ted Huang;Yuh-Jing Hwang;Shou-Ting Jian;R. Kawabe;K. Kimura;Sheng-Yuan Liu;S. Lai;H. Ogawa;N. Okada;S. Kameno;T. Shimoikura;S. Takakuwa;K. Taniguchi;Wei-hao Wang;You-Ting Yeh;Y. Yamasaki;Y. Yonekura

电磁光谱微波波段的Ka/Q波段对于天体物理和天体化学研究，特别是星际介质子场的研究具有重要意义。这两条谱带不仅覆盖了丰富的稠密气体示踪剂CS及其同位素的基本谱线，而且还覆盖了相对较大、长链和/或复杂有机物种的大量跃迁。在这里，通过台湾和日本的合作，为Nobeama 45米望远镜制造了一个扩展的Q波段(30-50 GHz)接收器。接收器前端于2021年11月安装在Nobeama 45米望远镜上，并在同月获得第一束光。接收器的调试和科学验证(CSV)于2022年上半年进行。调试后，该接收机将是世界上唯一一台能够同时覆盖安装在大型单碟式望远镜上的7 mm波长3个塞曼跃迁的接收机。它将是探索前原恒星核心磁场的最强大的设备之一。

The Ka-/Q-band in the microwave region of the electromagnetic spectrum is important for astrophysical and astrochemical research, particularly in the subfield of interstellar medium (ISM). The two bands cover not only the fundamental lines of the abundant dense gas tracer CS and its isotopologues but also a vast number of transitions of relatively large, long-chain, and/or complex organic species. Here, through a Taiwan-Japan collaboration, an extended Q-band (30-50GHz) receiver is built for Nobeyama 45-m telescope. The receiver front-end was installed at Nobeyama 45-m telescope in Nov. 2021 and obtained its first light in the same month. Commissioning and science verification (CSV) of the receiver was conducted in the first half of 2022. After commissioning, this receiver will be the only one in the world providing capability to cover 3 Zeeman transitions simultaneously at 7mm wavelength installed at large single dish telescope. It will be one of the most powerful facilities to explore the magnetic fields towards the pre-protostellar cores.

Extended Q-band (eQ) receiver for Nobeyama 45-m Telescope

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