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Wideband 67-116 GHz receiver development for ALMA Band 2
P. Yagoubov, T. Mroczkowski, V. Belitsky +43
ALMA has been operating since 2011, but has not yet been populated with the full suite of intended frequency bands. In particular, ALMA Band 2 (67-90 GHz) is the final band in the…
First M87 Event Horizon Telescope Results. II. Array and Instrumentation
The Event Horizon Telescope Collaboration
The Event Horizon Telescope (EHT) is a very long baseline interferometry (VLBI) array that comprises millimeter- and submillimeter-wavelength telescopes separated by distances comp…
Wide Bandwidth Considerations for ALMA Band 2
Tony Mroczkowski, Carlos De Breuck, Ciska Kemper +9
One of the main considerations in the ALMA Development Roadmap for the future of operations beyond 2030 is to at least double its on-sky instantaneous bandwidth capabilities. Thank…
A massive nebula around the Luminous Blue Variable star RMC143 revealed by ALMA
Claudia Agliozzo, Andrea Mehner, Neil Matthew Phillips +11
The luminous blue variable (LBV) RMC143 is located in the outskirts of the 30~Doradus complex, a region rich with interstellar material and hot luminous stars. We report the s…
Calibration of ALMA as a phased array: ALMA observations during the 2017 VLBI campaign
Ciriaco Goddi, Ivan Marti-Vidal, Hugo Messias +14
We present a detailed description of the special procedures for calibration and quality assurance of Atacama Large Millimeter/submillimeter Array (ALMA) observations in Very Long B…