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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 3 CONTRIBUTI IN ATTI DI CONVEGNO (Proceedings)
  4. 3.01 Contributi in Atti di convegno
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28888
Title: ITA-JPN Broadband VLBI Experiment for Optical Clock Comparison
Authors: Sekido, M.
Takefuji, K.
Ujihara, H.
Hachisu, H.
Nemitz, N.
Pizzocaro, M.
Clivati, C.
Calonico, D.
Ido, T.
Tsutsumi, M.
Kawai, E.
Namba, K.
Okamoto, Y.
Takahashi, R.
Komuro, J.
Ichikawa, R.
Ishijima, H.
Bregolin, F.
Levi, F.
Cantoni, E.
Cerretto, G.
PERINI, FEDERICO 
MACCAFERRI, GIUSEPPE 
NEGUSINI, MONIA 
RICCI, ROBERTO 
Mura, Alberto
Issue Date: 2019
Volume: Proceedings of the 24th European VLBI Group for Geodesy and Astrometry Working Meeting
Editors: Haas, Rüdiger; García-Espada, Susana; López Fernández, José Antonio
First Page: 52
Abstract: NICT has developed a broadband VLBI (very-long-baseline interferometry) system for intercontinental frequency transfer. After domestic tests in Japan, a 2.4 m diameter VLBI station was exported and installed at Medicina astronomy observatory of INAF in Italy in 2018. We have started VLBI experiments for optical clock comparison on an Italy-Japan intercontinental baseline. Reference signals generated by an ytterbium (Yb) optical lattice clock at INRiM in Torino and by a strontium (Sr) lattice clock at NICT headquarters in Koganei are compared by a series of links, which include a coherent optical fiber link between INRiM and Medicina and intercontinental VLBI observation between Medicina and Koganei. A series of VLBI experiments was performed from Oct. 2018 to Feb. 2019. Yb and Sr lattice clocks were repeatedly operated throughout the same period for frequency comparison.
Conference Name: 24th European VLBI Group for Geodesy and Astrometry Working Meeting
Conference Place: Las Palmas de Gran Canaria, Spain
Conference Date: 17-19 March, 2019
URI: http://hdl.handle.net/20.500.12386/28888
URL: https://www.sea-astronomia.es/24th-meeting-european-vlbi-group-geodesy-and-astrometry-evga
ISBN: 978-84-416-5634-5
Bibcode ADS: 2019evga.conf...52S
Fulltext: open
Appears in Collections:3.01 Contributi in Atti di convegno

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