33 citations · 82 across the 8 of their papers we have counts for
Showing astro-ph.GAShow all
2 papers · 1 filter
astro-ph.GA2021★ 1 cited
Analysis of modern astrometric catalogues in the Gaia era
V. S. Akhmetov, P. N. Fedorov, V. S. Tsvetkova +1
We investigate of the systems of proper motions of stars in the ground-based catalogues HSOY, UCAC5, GPS1 and PMA derived by combining with the Gaia DR1 space data. Assuming the sy…
astro-ph.GA2018★ 1 cited
Detection of the rapid variability in the Q2237+0305 quasar
L. Berdina, V. S. Tsvetkova
Rapid intrinsic variability has been detected for the first time in the Einstein Cross QSO 2237+0305, a radio quiet flat spectrum quasar at z=1.7 that is quadruply lensed by a fore…