2017A&A...603A..48K

Query : 2017A&A...603A..48K

2017A&A...603A..48K - Astronomy and Astrophysics, volume 603A48-48 (2017/7-1)

Fibre-optic delivery of time and frequency to VLBI station.

KREHLIK P., BUCZEK L., KOLODZIEJ J., LIPINSKI M., SLIWCZYNSKI L., NAWROCKI J., NOGAS P., MARECKI A., PAZDERSKI E., ABLEWSKI P., BOBER M., CIURYLO R., CYGAN A., LISAK D., MASLOWSKI P., MORZYNSKI P., ZAWADA M., CAMPBELL R.M., PIECZERAK J., BINCZEWSKI A. and TURZA K.

Abstract (from CDS):

The quality of Very Long Baseline Interferometry (VLBI) radio observations predominantly relies on precise and ultra-stable time and frequency (T&F) standards, usually hydrogen masers (HM), maintained locally at each VLBI station. Here, we present an operational solution in which the VLBI observations are routinely carried out without use of a local HM, but using remote synchronization via a stabilized, long-distance fibre-optic link. The T&F reference signals, traceable to international atomic timescale (TAI), are delivered to the VLBI station from a dedicated timekeeping laboratory. Moreover, we describe a proof-of-concept experiment where the VLBI station is synchronized to a remote strontium optical lattice clock during the observation.

Abstract Copyright: © ESO, 2017

Journal keyword(s): instrumentation: high angular resolution - instrumentation: interferometers - instrumentation: interferometers

Simbad objects: 2

Full paper

View the references in ADS

Number of rows : 2

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	4C 28.07	Bla	02 37 52.40567519	+28 48 08.9899986			19.30	16.99		~	654	1
2	8C 2007+777	BLL	20 05 30.9987913056	+77 52 43.248139536			16.5	17.36		~	474	1

To bookmark this query, right click on this link: simbad:objects in 2017A&A...603A..48K and select 'bookmark this link' or equivalent in the popup menu