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28 March 2024
 
  » arxiv » 1703.9673

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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. 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 ;
Date 28 Mar 2017
Abstract[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.
Source arXiv, 1703.9673
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