190 citations · 211 across the 5 of their papers we have counts for
5 papers
Time delay between images of the lensed quasar UM673
E. Koptelova, W. P. Chen, T. Chiueh +11
We study brightness variations in the double lensed quasar UM673 (Q0142-100) with the aim of measuring the time delay between its two images. In the paper we combine our previously…
QSO 0957+561 and other large-separated double quasars: some new results and a future observational project
V. L. Oknyanskij
We collected from literature the information about large-separated pairs of QSOs, which however once were suspected as gravitationally lensed system. We discuss some new results on…
New radio observations of QSO 0957+561 confirm optical-to radio time delay
V. L. Oknyanskij
In our previous publications have been reported about possible time delay between optical and radio (6 cm) variations in QSO 0957+561 and noted that the result can be tested with n…
Correlation of IR and Opticical Variability in NGC4151
V. L. Oknyanskij, V. M. Lyuty, O. G. Taranova +1
We combine all published NIR and optical photometrical observations of NGC 4151 as well as our new unpublished yet data which can be used for determination of time delays between o…
Multiwavelength observations of short time-scale variability in NGC 4151. IV. Analysis of multiwavelength continuum variability
R. A. Edelson et al
This paper combines data from the three preceding papers in order to analyze the multi-waveband variability and spectral energy distribution of the Seyfert~1 galaxy NGC~4151 during…