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arXiv 1703.09673astro-ph.IM
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撒丁岛Radio Telescope:从技术项目到射电观测站

The Sardinia Radio Telescope: From a Technological Project to a Radio Observatory

I. Prandoni, M. Murgia, A. Tarchi, M. Burgay, P. Castangia, E. Egron, F. Govoni, A. Pellizzoni, R. Ricci, S. Righini, M. Bartolini, S. Casu, A. Corongiu, M. N. … 展开作者

I. Prandoni, M. Murgia, A. Tarchi, M. Burgay, P. Castangia, E. Egron, F. Govoni, A. Pellizzoni, R. Ricci, S. Righini, M. Bartolini, S. Casu, A. Corongiu, M. N. Iacolina, A. Melis, F. T. Nasir, A. Orlati, D. Perrodin, S. Poppi, A. Trois, V. Vacca, A. Zanichelli, M. Bachetti, M. Buttu, G. Comoretto, R. Concu, A. Fara, F. Gaudiomonte, F. Loi, C. Migoni, A. Orfei, M. Pilia, P. Bolli, E. Carretti, N. D'Amico, D. Guidetti, S. Loru, F. Massi, T. Pisanu, I. Porceddu, A. Ridolfi, G. Serra, C. Stanghellini, C. Tiburzi, S. Tingay, G. Valente

摘要:

撒丁岛射电望远镜(SRT)是由INAF(意大利)运营的新的64米碟形望远镜。它的活动表面将允许我们在高达116 GHz的频率下进行观察。目前已安装和测试了三个接收器,每个焦点位置一个。SRT于2013年10月在完成技术调试阶段后正式启用。在本文中,我们概述了SRT的主要科学驱动因素,描述了望远镜科学调试的主要成果,并讨论了一组展示SRT科学能力的观测结果。科学调试的主要目标之一是查明仪器和(或)望远镜分系统的缺陷,以便进一步优化。因此,望远镜的总体性能得到了显著改善。作为科学调试活动的一部分,对不同的观测模式进行了测试和验证,并进行了首次天文观测,以展示SRT的科学能力。此外,我们还开发了面向天文学家的软件工具,以支持未来的现场观察员。天文学验证活动根据技术准备程度和科学影响确定了优先次序。最高优先事项是将SRT作为欧洲网络的一部分用于联合观测。因此,SRT于2014年初开始(以风险共担模式)参与EVN(欧洲VLBI网络)和LEAP(欧洲大型脉冲星阵列)观测会议。在接下来的几年里,SRT第一批光接收器和后端套件的单碟操作验证继续进行,并在2015年底发布了第一次风险分担/早期科学观测呼吁。

英文摘要:

[Abridged] The Sardinia Radio Telescope (SRT) is the new 64-m dish operated by INAF (Italy). Its active surface will allow us to observe at frequencies of up to 116 GHz. At the moment, three receivers, one per focal position, have been installed and tested. The SRT was officially opened in October 2013, upon completion of its technical commissioning phase. In this paper, we provide an overview of the main science drivers for the SRT, describe the main outcomes from the scientific commissioning of the telescope, and discuss a set of observations demonstrating the SRT's scientific capabilities. One of the main objectives of scientific commissioning was the identification of deficiencies in the instrumentation and/or in the telescope sub-systems for further optimization. As a result, the overall telescope performance has been significantly improved. As part of the scientific commissioning activities, different observing modes were tested and validated, and first astronomical observations were carried out to demonstrate the science capabilities of the SRT. In addition, we developed astronomer-oriented software tools, to support future observers on-site. The astronomical validation activities were prioritized based on technical readiness and scientific impact. The highest priority was to make the SRT available for joint observations as part of European networks. As a result, the SRT started to participate (in shared-risk mode) in EVN (European VLBI Network) and LEAP (Large European Array for Pulsars) observing sessions in early 2014. The validation of single-dish operations for the suite of SRT first light receivers and backends continued in the following years, and was concluded with the first call for shared-risk/early-science observations issued at the end of 2015.

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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