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

Труды ИПА РАН, вып. 40, 40–45 (2017)

Ключевые слова: VLBI, Astrometry

Аннотация

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.

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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 // Труды ИПА РАН. — 2017. — Вып. 40. — С. 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 = {Труды ИПА РАН}, 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/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 - Труды ИПА РАН 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/library/paper/1677/ ER -