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43 GHZ High-Precision Wide-Angle VLBI Astrometry of the Complete S5 Polar Cap Sample at the Technical Limit

F. J. Abellán, I. Mart´i-Vidal, J. M. Marcaide, J. C. Guirado

Transactions of IAA RAS, issue 40, 40–45 (2017)

Keywords: VLBI, Astrometry

Abstract

Minute motions of the cores of radio quasars and BL Lac objects and the chromatic dependence of the positions of those cores (the so-called core shift) can be studied by means of VLBI phase delay astrometry. We report on the results of 14.4/43.1GHz VLBA observations of the complete S5 polar cap sample carried out in 2010 compared to 15 GHz observations made in 2000. The successful 43 GHz observations in 2010, globally phase-delay connected for the first time, mark the state-of-the-art of the technique and probably its limit.

Citation

Text

BibTeX

RIS

F. J. Abellán, I. Mart´i-Vidal, J. M. Marcaide, J. C. Guirado. 43 GHZ High-Precision Wide-Angle VLBI Astrometry of the Complete S5 Polar Cap Sample at the Technical Limit // Transactions of IAA RAS. — 2017. — Issue 40. — P. 40–45.

@article{abellán2017,
  abstract = {Minute motions of the cores of radio quasars and BL Lac objects and the chromatic dependence of the positions of those cores (the so-called core shift) can be studied by means of VLBI phase delay astrometry. We report on the results of 14.4/43.1GHz VLBA observations of the complete S5 polar cap sample carried out in 2010 compared to 15 GHz observations made in 2000. The successful 43 GHz observations in 2010, globally phase-delay connected for the first time, mark the state-of-the-art of the technique and probably its limit.},
  author = {F.~J. Abellán and I. Mart´i-Vidal and J.~M. Marcaide and J.~C. Guirado},
  issue = {40},
  journal = {Transactions of IAA RAS},
  keyword = {VLBI, Astrometry},
  pages = {40--45},
  title = {43 GHZ High-Precision Wide-Angle VLBI Astrometry of the Complete S5 Polar Cap Sample at the Technical Limit},
  url = {http://iaaras.ru/en/library/paper/1677/},
  year = {2017}
}

TY  - JOUR
TI  - 43 GHZ High-Precision Wide-Angle VLBI Astrometry of the Complete S5 Polar Cap Sample at the Technical Limit
AU  - Abellán, F. J.
AU  - Mart´i-Vidal, I.
AU  - Marcaide, J. M.
AU  - Guirado, J. C.
PY  - 2017
T2  - Transactions of IAA RAS
IS  - 40
SP  - 40
AB  - Minute motions of the cores of radio quasars and BL Lac objects and
the chromatic dependence of the positions of those cores (the so-
called core shift) can be studied by means of VLBI phase delay
astrometry. We report on the results of 14.4/43.1GHz VLBA
observations of the complete S5 polar cap sample carried out in 2010
compared to 15 GHz observations made in 2000. The successful 43 GHz
observations in 2010, globally phase-delay connected for the first
time, mark the state-of-the-art of the technique and probably its
limit.
UR  - http://iaaras.ru/en/library/paper/1677/
ER  -