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## Estimating PPN Parameter γ from Processing VLBI Series

Transactions of IAA RAS, issue 47, 43–52 (2018)

Keywords: PPN formalism, VLBI observations.

### Abstract

The paper is devoted to estimation of PPN parameter γ over all available at 2016 VLBI observations from geodetic and astrometric programs. We make a short review of previous articles on estimations by light deflection. The calculations has been done using full partial with respect to γ, we take into account gravitational delay from main Solar system bodies and geometric part from transformation to barycentre. In order to show connection between γ and other model parameters we perform number of solutions with different parametrisations and a priory data. It was shown that intraday variations of EOP and ocean loading models mostly affect estimations. There are no significant correlations between γ and other global solution parameters.

### Citation

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RIS
S. L. Kurdubov, S. M. Mironova. Estimating PPN Parameter γ from Processing VLBI Series // Transactions of IAA RAS. — 2018. — Issue 47. — P. 43–52. @article{kurdubov2018, abstract = {The paper is devoted to estimation of PPN parameter γ over all available at 2016 VLBI observations from geodetic and astrometric programs. We make a short review of previous articles on estimations by light deflection. The calculations has been done using full partial with respect to γ, we take into account gravitational delay from main Solar system bodies and geometric part from transformation to barycentre. In order to show connection between γ and other model parameters we perform number of solutions with different parametrisations and a priory data. It was shown that intraday variations of EOP and ocean loading models mostly affect estimations. There are no significant correlations between γ and other global solution parameters.}, author = {S.~L. Kurdubov and S.~M. Mironova}, doi = {10.32876/ApplAstron.47.43-52}, issue = {47}, journal = {Transactions of IAA RAS}, keyword = {PPN formalism, VLBI observations}, pages = {43--52}, title = {Estimating PPN Parameter γ from Processing VLBI Series}, url = {http://iaaras.ru/en/library/paper/1892/}, year = {2018} } TY - JOUR TI - Estimating PPN Parameter γ from Processing VLBI Series AU - Kurdubov, S. L. AU - Mironova, S. M. PY - 2018 T2 - Transactions of IAA RAS IS - 47 SP - 43 AB - The paper is devoted to estimation of PPN parameter γ over all available at 2016 VLBI observations from geodetic and astrometric programs. We make a short review of previous articles on estimations by light deflection. The calculations has been done using full partial with respect to γ, we take into account gravitational delay from main Solar system bodies and geometric part from transformation to barycentre. In order to show connection between γ and other model parameters we perform number of solutions with different parametrisations and a priory data. It was shown that intraday variations of EOP and ocean loading models mostly affect estimations. There are no significant correlations between γ and other global solution parameters. DO - 10.32876/ApplAstron.47.43-52 UR - http://iaaras.ru/en/library/paper/1892/ ER -