TY - JOUR
T1 - Calibration of ALMA as a Phased Array. ALMA Observations During the 2017 VLBI Campaign
AU - Goddi, C.
AU - Martí-Vidal, I.
AU - Messias, H.
AU - Crew, G. B.
AU - Herrero-Illana, R.
AU - Impellizzeri, V.
AU - Rottmann, H.
AU - Wagner, J.
AU - Fomalont, E.
AU - Matthews, L. D.
AU - Petry, D.
AU - Phillips, N.
AU - Tilanus, R.
AU - Villard, E.
AU - Blackburn, L.
AU - Janssen, M.
AU - Wielgus, M.
N1 - Publisher Copyright:
© 2019. The Astronomical Society of the Pacific. All rights reserved.
PY - 2019/7
Y1 - 2019/7
N2 - 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 3mm (Band 3) and 1.3mm (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.
AB - 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 3mm (Band 3) and 1.3mm (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.
KW - (galaxies:) quasars: general
KW - astronomical databases: miscellaneous
KW - instrumentation: interferometers
KW - methods: data analysis
KW - methods: observational
KW - submillimeter: galaxies
KW - submillimeter: general
KW - surveys
KW - techniques: high angular resolution
KW - techniques: interferometric
UR - https://www.scopus.com/pages/publications/85064450814
UR - https://www.scopus.com/pages/publications/85064450814#tab=citedBy
U2 - 10.1088/1538-3873/ab136a
DO - 10.1088/1538-3873/ab136a
M3 - Article
AN - SCOPUS:85064450814
SN - 0004-6280
VL - 131
JO - Publications of the Astronomical Society of the Pacific
JF - Publications of the Astronomical Society of the Pacific
IS - 1001
M1 - 075003
ER -