33 citations · 109 across the 9 of their papers we have counts for
9 papers
Liverpool-Maidanak monitoring of the Einstein Cross in 20062019. I. Light curves in the optical bands and microlensing signatures
L. J. Goicoechea, B. P. Artamonov, V. N. Shalyapin +8
Quasar microlensing offers a unique opportunity to resolve tiny sources in distant active galactic nuclei and study compact object populations in lensing galaxies. We therefore sea…
Long-term trends in the solar activity. Variations of solar indices in last 40 years
E. A. Bruevich, V. V. Bruevich
The analysis of long-term variations of several solar activity indices (AI) since in last 40 years has been performed. We studied the AI which characterize the fluxes from differen…
A spectral and photometric study of 102 star forming regions in seven spiral galaxies
A. S. Gusev, F. Sakhibov, A. E. Piskunov +7
We present a study of complexes of young massive star clusters (YMCs), embedded in extragalactic giant HII regions, based on the coupling of spectroscopic with photometric and spec…
Study of young stellar groupings in HII regions based on the spectral and photometric data
A. S. Gusev, F. Kh. Sakhibov, A. E. Piskunov +10
We studied 102 star forming regions in seven spiral galaxies (NGC 628, NGC 783, NGC 2336, NGC 6217, NGC 6946, NGC 7331, and NGC 7678) on the basis of complex spectroscopic, photome…
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…
Time delays in PG1115+080: new estimates
V. G. Vakulik, V. M. Shulga, R. E. Schild +13
We report new estimates of the time delays in the quadruple gravitationally lensed quasar PG1115+080, obtained from the monitoring data in filter R with the 1.5-m telescope at the…
The time-delay of the gravitationally lensed double quasar UM 673
T. A. Akhunov, R. W. Schmidt, O. Burkhonov +11
The paper has been withdrawn because double checking and comparison with other data sets after the original submission showed that a broken R-band filter at the Maidanak telescope…
Time delay of SBS 0909+532
A. Ullan, L. J. Goicoechea, A. P. Zheleznyak +4
The time delays between the components of a lensed quasar are basic tools to analyze the expansion of the Universe and the structure of the main lens galaxy halo. In this paper, we…
Image reconstruction technique and optical monitoring of the QSO2237+0305 from Maidanak Observatory in 2002 -- 2003
E. A. Koptelova, E. V. Shimanovskaya, B. P. Artamonov +4
We have observed the gravitational lens system Q2237+0305 from the Maidanak Observatory over the period from August 2002 to November 2003. Here we report the results of our observa…