The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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Pilot observations of VLBI fringe survey at 43 GHz using VERA

  • Oh, Jung-Hwan (Korea Astronomy and Space science Institute) ;
  • Lee, Sang-Sung (Korea Astronomy and Space science Institute) ;
  • Honma, Mareki (National Astronomical Observatory of Japan) ;
  • Kovalev, Y.Y. (Astro Space Center of Lebedev Physical Institute) ;
  • Petrov, Leonid (ADNET Systems Inc./NASA GSFC) ;
  • Sohn, Bong-Won (Korea Astronomy and Space science Institute)
  • Published : 2011.10.05
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Abstract

We present the preliminary results of the pilot observations for the fringe survey at 43 GHz with the VLBI Exploration of Radio Astrometry (VERA). The main goals of the fringe survey are to establish a full list of phase calibrators for the VERA dual-beam astrometric observations, and for the KVN multi-frequency phase referencing observations. We performed two 24 hours experiments as a pilot observation to test the feasibility of the fringe survey. Each source from a list of 220 sources has been observed in one scan for 2 minutes. 67 sources were detected with the SNR threshold of 3.5. The correlated flux densities of the detected sources are presented in four ranges of projected baseline lengths.

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