Calibration of ALMA as a Phased Array. ALMA Observations During the 2017 VLBI Campaign
Journal article, 2019

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 Baseline Interferometry (VLBI) mode. These procedures are required to turn the phased ALMA array into a fully calibrated VLBI station. As an illustration of these methodologies, we present full-polarization observations carried out with ALMA as a phased array at 3 mm (Band 3) and 1.3 mm (Band 6) as part of Cycle-4. These are the first VLBI science observations conducted with ALMA and were obtained during a 2017 VLBI campaign in concert with other telescopes worldwide as part of the Global mm-VLBI Array (GMVA, April 1-3) and the Event Horizon Telescope (EHT, April 5-11) in ALMA Bands 3 and 6, respectively.

methods: data analysis

(galaxies:) quasars: general

astronomical databases: miscellaneous

techniques: high angular resolution

submillimeter: general

methods: observational

surveys

techniques: interferometric

instrumentation: interferometers

submillimeter: galaxies

Author

C. Goddi

Leiden University

Radboud University

Ivan Marti-Vidal

Centro Astronomico de Yebes

Chalmers, Space, Earth and Environment, Onsala Space Observatory

H. Messias

Atacama Large Millimeter-submillimeter Array (ALMA)

G. B. Crew

Massachusetts Institute of Technology (MIT)

R. Herrero-Illana

European Southern Observatory Santiago

V. Impellizzeri

Atacama Large Millimeter-submillimeter Array (ALMA)

H. Rottmann

Max Planck Society

J. Wagner

Max Planck Society

E. Fomalont

Atacama Large Millimeter-submillimeter Array (ALMA)

L. D. Matthews

Massachusetts Institute of Technology (MIT)

D. Petry

European Southern Observatory Santiago

R. Tilanus

Leiden University

Radboud University

E. Villard

Atacama Large Millimeter-submillimeter Array (ALMA)

L. Blackburn

Harvard-Smithsonian Center for Astrophysics

M. Janssen

Radboud University

M. Wielgus

Harvard University

Harvard-Smithsonian Center for Astrophysics

Publications of the Astronomical Society of the Pacific

0004-6280 (ISSN) 1538-3873 (eISSN)

Vol. 131 1001 075003

Subject Categories

Meteorology and Atmospheric Sciences

Astronomy, Astrophysics and Cosmology

DOI

10.1088/1538-3873/ab136a

More information

Latest update

9/20/2019