397 citations
- Institute of Applied AstronomyRU10 papers
- Centre National de la Recherche ScientifiqueFR9 papers
- University of TasmaniaAU8 papers
- Konkoly ObservatoryHU7 papers
- Shanghai Astronomical ObservatoryCN7 papers
- Systèmes de Référence Temps-EspaceFR7 papers
- HUN-REN Research Centre for Astronomy and Earth SciencesHU6 papers
- Observatoire de ParisFR6 papers
- Yebes ObservatoryES6 papers
- Australian National UniversityAU5 papers
- Eötvös Loránd UniversityHU5 papers
- Pulkovo ObservatoryRU5 papers
9 papers · 1 filter
Interstellar scintillation is an indicator of astrometric stability
Robert Schaap, Stanislav Shabala, Simon Ellingsen +2
We examine the relationship between astrometric stability and astrophysical properties in flat-spectrum radio-loud quasars making up the celestial reference frame. We use position…
The effects of frequency-dependent quasar variability on the celestial reference frame
Stanislav Shabala, Jonathan Rogers, Jamie McCallum +4
We examine the relationship between source position stability and astrophysical properties of radio-loud quasars making up the International Celestial Reference Frame. Understandin…
Optical Spectra of Candidate Southern Hemisphere International Celestial Reference Frame (ICRF) radio sources
O. Titov, D. L. Jauncey, H. M. Johnston +2
We present the results of spectroscopic observations of the optical counterparts of 47 southern radio sources from the candidate International Celestial Reference Catalogue (ICRC),…
On the connection of the apparent proper motion and the VLBI structure of compact radio sources
A. Moór, S. Frey, S. B. Lambert +2
Many of the compact extragalactic radio sources that are used as fiducial points to define the celestial reference frame are known to have proper motions detectable with long-term…
VLBI measurement of the secular aberration drift
O. Titov, S. B. Lambert, A. -M. Gontier
While analyzing decades of very long baseline interferometry (VLBI) data, we detected the secular aberration drift of the extragalatic radio source proper motions caused by the rot…
Secular Aberration Drift and IAU Definition of ICRS
Oleg Titov
The gravitational attraction of the Galactic centre leads to the centrifugal acceleration of the Solar system barycentre. It results in secular aberration drift which displaces the…