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Metadata for the Flux Density Calibration of the April 2018 Event Horizon Telescope Data
J. Y. Koay, C. Romero-Cañizales, L. D. Matthews +29
The Event Horizon Telescope (EHT) observations carried out in 2018 April at 1.3 mm wavelengths included 9 stations in the array, comprising 7 single-dish telescopes and 2 phased ar…
Absolute Flux Density Calibration of the Greenland Telescope Data for Event Horizon Telescope Observations
J. Y. Koay, K. Asada, S. Matsushita +35
Starting from the observing campaign in April 2018, the Greenland Telescope (GLT) has been added as a new station of the Event Horizon Telescope (EHT) array. Visibilities on baseli…
Calibrating VLBI Polarization Data Using GPCAL. II. Time-Dependent Calibration
Jongho Park, Keiichi Asada, Do-Young Byun
We present a new method of time-dependent instrumental polarization calibration for Very Long Baseline Interferometry (VLBI). This method has been implemented in the recently devel…
Calibrating VLBI Polarization Data Using GPCAL. I. Frequency-Dependent Calibration
Jongho Park, Keiichi Asada, Do-Young Byun
In this series of papers, we present new methods of frequency- and time-dependent instrumental polarization calibration for Very Long Baseline Interferometry (VLBI). In most existi…