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6th of November 2023
Long Baseline Array observing
The angular resolution of a telescope improves with the diameter of the dish, or with the spacing between elements of the array. The technique of Very Long Baseline Interferometry uses antennas spaced hundreds to thousands of kilometres apart to achieve angular resolutions measured in milli-arcseconds. The ATNF telescopes work together with those from the University of Tasmania, the South African Radio Astronomy Observatory, and SpaceOps New Zealand to form the Long Baseline Array. A five-day LBA session is currently underway, with projects scheduled being "Physics of Gamma Ray Emitting Active Galactic Nuclei", "Pinpointing an ultra-long period magnetar", "Probing Gaia parallax zero-points at low Galactic latitudes using VLBI astrometry of radio stars", "The EMU-VLBI pilot survey - uncovering milliarcsecond radio structures in the Southern sky", "Zooming in on a white dwarf around a reignited star", and "Parsec-scale structure of radio sources showing HI-21cm absorption". Data is correlated using the DiFX software correlator at the Pawsey Supercomputing Research Centre in Perth.

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