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arXiv · 1804.02826

MultiView phase corrections at low frequencies for precise astrometry

Gabor Orosz·Maria J. Rioja·Richard Dodson·Hiroshi Imai·Sandor Frey
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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 MultiView provides superior astrometry to conventional phase referencing techniques (Rioja et al. 2017). We also introduce a new trial method to detect antenna based systematic errors in the observations (Orosz et al. 2017}. All presented methods and results are based on our recent papers (Orosz et al. 2017; Rioja et al. 2017).

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Gabor Orosz, Maria J. Rioja, Richard Dodson, Hiroshi Imai, Sandor Frey. 2018-04-09. MultiView phase corrections at low frequencies for precise astrometry. https://arxiv.org/abs/1804.02826

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