Zobrazeno 1 - 10
of 260
pro vyhledávání: '"Tsvetkova V"'
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 systematic differences of stellar proper motions of two catalogues to be
Externí odkaz:
http://arxiv.org/abs/2104.00438
Publikováno v:
A&A 645, A78 (2021)
The interband time lags between the flux variations of the Q2237+0305 quasar have been determined from light curves in the Johnson-Cousins V, R, and I spectral bands. The values of the time lags for filter pairs R-V, I-R, and I-V are significantly hi
Externí odkaz:
http://arxiv.org/abs/2012.12025
We consider problem of constructing purely Voronoi mesh where the union of uncut Voronoi cells approximates the planar computational domain with piecewise-smooth boundary. Smooth boundary fragments are approximated by the Voronoi edges and Voronoi ve
Externí odkaz:
http://arxiv.org/abs/1809.05332
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 461, 2016, 3714-3723
A method for determining the time delays in gravitationally lensed quasars is proposed, which offers a simple and transparent procedure to mitigate the effects of microlensing. The method is based on fundamental properties of representation of quadra
Externí odkaz:
http://arxiv.org/abs/1802.02620
Autor:
Berdina, L., Tsvetkova, V. S.
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 foreground galaxy at z=0.04. The observed short-period event at the time s
Externí odkaz:
http://arxiv.org/abs/1801.05650
Autor:
Belli, P., Berdina, L. A., Bernabei, R., Bogdan, A., Boiko, R. S., Burgazli, A. Yu., Cappella, F., Cerulli, R., Chernyak, D. M., Danevich, F. A., d'Angelo, A., Eingorn, M. V., Fakhr, S. H., Fedorova, E., Galashov, E. N., Giuliani, A., Hnatyk, B. I., Incicchitti, A., Ivashchenko, G., Kobychev, V. V., Kobzar, O. O., Kraus, H., Kropivyansky, B. N., Kudinova, A. V., Kulinich, Yu. A., Laubenstein, M., Marchenko, V. V., Marnieros, S., Mikhailik, V. B., Minakov, A. A., Mokina, V. M., Nagornaya, L. L., Nikolaiko, A. S., Nones, C., Novosyadlyj, B. S., Olivieri, E., Pelykh, V. O., Poda, D. V., Podviyanuk, R. B., Polischuk, O. G., Sergijenko, O. N., Shlegel, V. N., Shulga, V. M., Sliusar, V. M., Sushchov, O. B., Taistra, Y. V., Tenconi, M., Torbaniuk, O., Tretyak, V. I., Tsvetkova, V. S., Vakulik, V. G., Vasiliev, Ya. V., Vasylenko, A., Vasylenko, O., Zhdanov, V. I., Zhuk, A. I.
The Workshop on results of the Project Kosmomikrofizyka-2 (Astroparticle Physics) of the National Academy of Sciences (NAS) of Ukraine "Astrophysical and cosmological problems of invisible mass and dark energy in the Universe" was held on November 21
Externí odkaz:
http://arxiv.org/abs/1304.4611
Autor:
Tsvetkova, V. S., Vakulik, V. G., Shulga, V. M., Schild, R. E., Dudinov, V. N., Minakov, A. A., Nuritdinov, S. N., Artamonov, B. P., Kochetov, A. Ye., Smirnov, G. V., Sergeyev, A. A., Konichek, V. V., Sinelnikov, I. Ye., Zheleznyak, A. P., Bruevich, V. V., Gaysin, R., Akhunov, T., Burkhonov, O.
We report the results of our multicolor observations of PG 1115+080 with the 1.5-m telescope of the Maidanak Observatory (Uzbekistan, Central Asia) in 2001-2006. Monitoring data in filter R spanning the 2004, 2005 and 2006 seasons (76 data points) de
Externí odkaz:
http://arxiv.org/abs/1004.3443
Autor:
Vakulik, V. G., Shulga, V. M., Schild, R. E., Tsvetkova, V. S., Dudinov, V. N., Minakov, A. A., Nuritdinov, S. N., Artamonov, B. P., Kochetov, A. Ye., Smirnov, G. V., Sergeyev, A. A., Konichek, V. V., Sinelnikov, I. Ye., Bruevich, V. V., Akhunov, T., Burkhonov, O.
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 Maidanak Mountain (Uzbekistan, Central Asia) in 2004-2006. The time de
Externí odkaz:
http://arxiv.org/abs/0910.1260
Autor:
Tsvetkova, V. A., Makhno, O. O.
Publikováno v:
Automatic Documentation & Mathematical Linguistics; Apr2024, Vol. 58 Issue 2, p141-148, 8p
Assuming a two-component quasar structure model consisting of a central compact source and an extended outer feature, we produce microlensing simulations for a population of star-like objects in the lens galaxy. Such a model is a simplified version o
Externí odkaz:
http://arxiv.org/abs/0708.1082