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Multiview Phase Corrections at Low Frequencies for Precise Astrometry

Transactions of IAA RAS, issue 40, 34–39 (2017)

Keywords: VLBI, astrometry, technique, radio continuum, masers

Abstract

We present a multi-calibrator solution, i. e. MultiView, to achieve accurate astrometry on the level of the thermal noise at low VLBI frequencies dominated by ionospheric residuals. We demonstrate on L-band VLBA observations how Multi- View provides superior astrometry to conventional phase referencing techniques [1]. We also introduce a new trial method to detect antenna based systematic errors in the observations [2]. All presented methods and results are based on our recent papers [2, 1].

Citation

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G. Orosz, M. J. Rioja, R. Dodson, H. Imai, S. Frey5. Multiview Phase Corrections at Low Frequencies for Precise Astrometry // Transactions of IAA RAS. — 2017. — Issue 40. — P. 34–39. @article{orosz2017, abstract = {We present a multi-calibrator solution, i. e. MultiView, to achieve accurate astrometry on the level of the thermal noise at low VLBI frequencies dominated by ionospheric residuals. We demonstrate on L-band VLBA observations how Multi- View provides superior astrometry to conventional phase referencing techniques [1]. We also introduce a new trial method to detect antenna based systematic errors in the observations [2]. All presented methods and results are based on our recent papers [2, 1].}, author = {G. Orosz and M.~J. Rioja and R. Dodson and H. Imai and S. Frey5}, issue = {40}, journal = {Transactions of IAA RAS}, keyword = {VLBI, astrometry, technique, radio continuum, masers}, pages = {34--39}, title = {Multiview Phase Corrections at Low Frequencies for Precise Astrometry}, url = {http://iaaras.ru/en/library/paper/1676/}, year = {2017} } TY - JOUR TI - Multiview Phase Corrections at Low Frequencies for Precise Astrometry AU - Orosz, G. AU - Rioja, M. J. AU - Dodson, R. AU - Imai, H. AU - Frey5, S. PY - 2017 T2 - Transactions of IAA RAS IS - 40 SP - 34 AB - We present a multi-calibrator solution, i. e. MultiView, to achieve accurate astrometry on the level of the thermal noise at low VLBI frequencies dominated by ionospheric residuals. We demonstrate on L-band VLBA observations how Multi- View provides superior astrometry to conventional phase referencing techniques [1]. We also introduce a new trial method to detect antenna based systematic errors in the observations [2]. All presented methods and results are based on our recent papers [2, 1]. UR - http://iaaras.ru/en/library/paper/1676/ ER -