The automatic calibration of Korean VLBI network data

Jeffrey A. Hodgson, Sang Sung Lee, Guang Yao Zhao, Juan Carlos Algaba, Youngjoo Yun, Taehyun Jung, Do Young Byun

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

The calibration of Very Long Baseline Interferometry (VLBI) data has long been a time consuming process. The Korean VLBI Network (KVN) is a simple array consisting of three identical antennas. Because four frequencies are observed simultaneously, phase solutions can be transferred from lower frequencies to higher frequencies in order to improve phase coherence and hence sensitivity at higher frequencies. Due to the homogeneous nature of the array, the KVN is also well suited for automatic calibration. In this paper we describe the automatic calibration of single-polarisation KVN data using the KVN Pipeline and comparing the results against VLBI data that has been manually reduced. We find that the pipelined data using phase transfer produces better results than a manually reduced dataset not using the phase transfer. Additionally we compared the pipeline results with a manually reduced phase-transferred dataset and found the results to be identical.

Original languageEnglish
Pages (from-to)137-144
Number of pages8
JournalJournal of the Korean Astronomical Society
Volume49
Issue number4
DOIs
StatePublished - Aug 2016

Bibliographical note

Publisher Copyright:
© 2016. The Korean Astronomical Society. All rights reserved.

Keywords

  • KVN: pipeline: calibration

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