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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/27202
Title: The Sardinia Radio Telescope . From a technological project to a radio observatory
Authors: PRANDONI, ISABELLA 
MURGIA, MATTEO 
TARCHI, ANDREA 
BURGAY, MARTA 
CASTANGIA, PAOLA 
EGRON, ELISE MARIE JEANNE 
GOVONI, FEDERICA 
PELLIZZONI, ALBERTO PAOLO 
RICCI, ROBERTO 
RIGHINI, SIMONA 
BARTOLINI, MARCO 
CASU, Silvia 
CORONGIU, ALESSANDRO 
Iacolina, M. N.
MELIS, Andrea 
Nasir, F. T.
ORLATI, ANDREA 
PERRODIN, DELPHINE 
POPPI, Sergio 
TROIS, ALESSIO 
VACCA, VALENTINA 
ZANICHELLI, Alessandra 
BACHETTI, Matteo 
BUTTU, Marco 
COMORETTO, Giovanni 
CONCU, Raimondo 
FARA, Antonietta Angela Rita 
GAUDIOMONTE, Francesco 
Loi, F.
MIGONI, CARLO 
ORFEI, ALESSANDRO 
PILIA, Maura 
BOLLI, Pietro 
CARRETTI, ETTORE 
D'AMICO, NICOLO' 
GUIDETTI, DARIA 
LORU, SARA 
MASSI, Fabrizio 
PISANU, Tonino 
PORCEDDU, Ignazio Enrico Pietro 
RIDOLFI, ALESSANDRO 
SERRA, Giampaolo 
STANGHELLINI, CARLO 
Tiburzi, C.
Tingay, S.
Valente, G.
Issue Date: 2017
Journal: ASTRONOMY & ASTROPHYSICS 
Number: 608
First Page: A40
Abstract: Context. The Sardinia Radio Telescope (SRT) is the new 64 m dish operated by the Italian National Institute for Astrophysics (INAF). Its active surface, comprised of 1008 separate aluminium panels supported by electromechanical actuators, 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: a 7-beam K-band receiver, a mono-feed C-band receiver, and a coaxial dual-feed L/P band receiver. The SRT was officially opened in September 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 scientific capabilities of the SRT. <BR /> Aims: The scientific commissioning phase, carried out in the 2012-2015 period, proceeded in stages following the implementation and/or fine-tuning of advanced subsystems such as the active surface, the derotator, new releases of the acquisition software, etc. One of the main objectives of scientific commissioning was the identification of deficiencies in the instrumentation and/or in the telescope subsystems for further optimization. As a result, the overall telescope performance has been significantly improved. <BR /> Methods: As part of the scientific commissioning activities, different observing modes were tested and validated, and the 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. In the following, we refer to the overall scientific commissioning and software development activities as astronomical validation. <BR /> Results: 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 European VLBI Network (EVN) and Large European Array for Pulsars (LEAP) 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 year, and was concluded with the first call for shared-risk early-science observations issued at the end of 2015. As discussed in the paper, the SRT capabilities were tested (and optimized when possible) for several different observing modes: imaging, spectroscopy, pulsar timing, and transients.
URI: http://hdl.handle.net/20.500.12386/27202
URL: https://www.aanda.org/articles/aa/abs/2017/12/aa30243-16/aa30243-16.html
ISSN: 0004-6361
DOI: 10.1051/0004-6361/201630243
Bibcode ADS: 2017A&A...608A..40P
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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