On the calibration of full-polarization 86GHz global VLBI observations
Artikel i vetenskaplig tidskrift, 2012
We report the development of a semi-automatic pipeline for the calibration of 86GHz full-polarization observations performed with the Global Millimeter-VLBI array (GMVA) and describe the calibration strategy followed in the data reduction. Our calibration pipeline involves non-standard procedures, since VLBI polarimetry at frequencies above 43GHz has not yet been well established. We also present, for the first time, a full-polarization global-VLBI image at 86GHz (source 3C 345), as an example of the final product of our calibration pipeline, and discuss the effect of instrumental limitations on the fidelity of the polarization images. Our calibration strategy is not exclusive to the GMVA, and could be applied to other VLBI arrays at millimeter wavelengths. The use of this pipeline will allow GMVA observers to obtain fully calibrated datasets shortly after the data correlation.
jet
quasars
radio continuum: general
3c-279
polarimetry
techniques: interferometric
instrumentation: interferometers
wavelength
black-hole
generation
86 ghz
Författare
Ivan Marti-Vidal
Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium
T. P. Krichbaum
Max-Planck-Gesellschaft
A. Marscher
Boston University
W. Alef
Max-Planck-Gesellschaft
A. Bertarini
Max-Planck-Gesellschaft
Universität Bonn
U. Bach
Max-Planck-Gesellschaft
F. K. Schinzel
University of New Mexico
Max-Planck-Gesellschaft
H. Rottmann
Max-Planck-Gesellschaft
J. M. Anderson
Max-Planck-Gesellschaft
A.J. Zensus
Max-Planck-Gesellschaft
M. Bremer
Institut de Radioastronomie Millimétrique (IRAM)
S. Sanchez
Institut de Radioastronomie Millimétrique (IRAM)
Michael Lindqvist
Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium
Ari Mujunen
Aalto-Yliopisto
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 542 A107- A107Ämneskategorier
Astronomi, astrofysik och kosmologi
Fundament
Grundläggande vetenskaper
Infrastruktur
Onsala rymdobservatorium
DOI
10.1051/0004-6361/201218958