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arXiv · 1410.0353

An influence of the matter distribution on the positional accuracy of reference sources

T. I. Larchenkova·A. A. Lutovinov·N. S. Lyskova
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Abstract

We consider an influence of a non-stationary gravitational field of the Galaxy on the visible positions of extragalactic sources. A contribution of the baryonic component of the galactic matter as well as of the hidden matter (including a population of brown dwarfs) were took into account. The observed variations of the deflection angle of light rays in a gravitational field of randomly moving point-like masses can be considered as a stochastic process. Using such an approach we constructed an autocorrelation function of studied stochastic process and found that its relative changes are about 15% for one year and about 35% for ten years.

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T. I. Larchenkova, A. A. Lutovinov, N. S. Lyskova. 2014-10-01. An influence of the matter distribution on the positional accuracy of reference sources. https://arxiv.org/abs/1410.0353

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