The influence of Galactic aberration on precession parameters determined from VLBI observations
Cosmology and Nongalactic Astrophysics
2011-09-05 v1 Instrumentation and Methods for Astrophysics
Abstract
The influence of proper motions of sources due to Galactic aberration on precession models based on VLBI data is determined. Comparisons of the linear trends in the coordinates of the celestial pole obtained with and without taking into account Galactic aberration indicate that this effect can reach 20 as per century, which is important for modern precession models. It is also shown that correcting for Galactic aberration influences the derived parameters of low-frequency nutation terms. It is therefore necessary to correct for Galactic aberration in the reduction of modern astrometric observations.
Keywords
Cite
@article{arxiv.1109.0514,
title = {The influence of Galactic aberration on precession parameters determined from VLBI observations},
author = {Z. M. Malkin},
journal= {arXiv preprint arXiv:1109.0514},
year = {2011}
}