http://arxiv.org/abs/2301.04543
The development of the Atacama Large Millimeter/submillimeter Array (ALMA) phasing system (APS) has allowed ALMA to function as an extraordinarily sensitive station for very long baseline interferometry (VLBI) at frequencies of up to 230 GHz (~1.3 mm). Efforts are now underway to extend use of the APS to 345 GHz (~0.87 mm). Here we report a characterization of APS performance at 345 GHz based on a series of tests carried out between 2015-2021, including a successful global VLBI test campaign conducted in 2018 October in collaboration with the Event Horizon Telescope (EHT).
G. Crew, C. Goddi, L. Matthews, et. al.
Thu, 12 Jan 23
15/68
Comments: 22 pages, 11 figures, 7 tables, accepted for publication in PASP