2012A&A...542A.107M


Query : 2012A&A...542A.107M

2012A&A...542A.107M - Astronomy and Astrophysics, volume 542A, 107-107 (2012/6-1)

On the calibration of full-polarization 86GHz global VLBI observations.

MARTI-VIDAL I., KRICHBAUM T.P., MARSCHER A., ALEF W., BERTARINI A., BACH U., SCHINZEL F.K., ROTTMANN H., ANDERSON J.M., ZENSUS J.A., BREMER M., SANCHEZ S., LINDQVIST M. and MUJUNEN A.

Abstract (from CDS):

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 3C345), 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.

Abstract Copyright:

Journal keyword(s): instrumentation: interferometers - techniques: interferometric - radio continuum: general

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 14.17 14.27   ~ 1206 1
2 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 5555 1
3 3C 345 QSO 16 42 58.8102993888 +39 48 37.002763188   16.81 16.59 16.84   ~ 1615 2
4 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2125 1

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2022.05.22-13:05:32

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