Search Results - "Nuritdinov, S. N"

Adaptive PSF fitting – a highly performing photometric method and light curves of the GLS H1413+117: time delays and micro-lensing effects by Akhunov, T A, Wertz, O, Elyiv, A, Gaisin, R, Artamonov, B P, Dudinov, V N, Nuritdinov, S N, Delvaux, C, Sergeyev, A V, Gusev, A S, Bruevich, V V, Burkhonov, O, Zheleznyak, A P, Ezhkova, O, Surdej, J

“…We present new photometric observations of H1413+117 acquired during seasons between 2001 and 2008 in order to estimate the time delays between the lensed…”
Get full text

Comparison of Instabilities of Annular Perturbations on the Background of Pulsating 2D and 3D Self-Gravitating Models by Mirtadjieva, K. T., Nuritdinov, S. N.

“…The problem of gravitational instability of the observed annular (ring-like) structural perturbation modes on the background of a nonlinearly pulsating…”
Get full text

On the Theory of Formation of Lopsided Spiral Galaxies by Mirtadjieva, K. T., Nuritdinov, S. N., Omonov, A. U.

“…In this paper, the phenomenon of lopsidedness associated with the observed effect of displacement of the core of a spiral galaxy from its geometric center is…”
Get full text

Dependences of Characteristics of Bulges on the Mass of the Central Black Hole and Theoretical Aspects of Their Origin by Botirov, F. U., Nuritdinov, S. N., Ashurov, A. E.

“…To study the influence of the central black hole on the formation of the bulge of spiral galaxies, we analyzed the relationship between the masses of…”
Get full text

Problems of Determining the Degree of Star Concentration Towards the Center of Globular Clusters by Turaev, S. J., Nuritdinov, S. N., Rastorguev, A. S., Tadjibaev, I. U.

“…In this paper, we analyze the apparent surface density observations of 81 globular clusters provided by Gaia DR2. The problems of analyzing these observations…”
Get full text

To the Globular Cluster Classification Problem. Calculating the Concentration of Stars for 26 Clusters by Nuritdinov, S. N., Tatjibaev, I. U., Rastorguev, A. S.

“…In view of the absence of a satisfactory solution to the globular cluster (GC) classification problem, we have searched for a physical parameter that admits of…”
Get full text

Instabilities of a Nonstationary Model of a Self-Gravitating Disk. V. New Annular Perturbation Modes by Mirtadjieva, K. T., Nuritdinov, S. N., Mannapova, K. A., Sadibekova, T. O.

“…The problem of gravitational instabilities of annular perturbation modes against the background of a self-gravitating disk model nonlinearly oscillating in its…”
Get full text

Globular Star Cluster Systems Around Galaxies. I. Search for Statistical Relationships by Nuritdinov, S. N., Tadjibaev, I. U.

“…Our earlier composite catalog [1] of systems of globular star clusters around galaxies has been substantially extended with the addition of observational data…”
Get full text

Globular Star Cluster Systems Around Galaxies. II. Spiral and Dwarf Galaxies by Tadjibaev, I. U., Nuritdinov, S. N., Ganiev, J. M.

“…Our composite catalog of globular cluster systems (GCS), which was studied in part I [1] of this paper , has been substantially extended because of a lack of…”
Get full text

PG 1115+080: variations of the A2/A1 flux ratio and new values of the time delays by 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., Gaisin, R., Akhunov, T., Burkhonov, O.

“…We report the results of our multicolour observations of PG 1115+080 with the 1.5-m telescope of the Maidanak Observatory (Uzbekistan, Central Asia) in…”
Get full text

Instabilities in a nonstationary model of self-gravitating disks. IV. Generalization of the models and comparison of results by Mirtadjieva, K. T., Nuritdinov, S. N.

“…A generalized phase model of a radially nonstationary disk with an anisotropic velocity diagram is constructed which has an exact nonlinear nonstationarity law…”
Get full text

Microlensing variability in FBQ 0951+2635: short-time-scale events or a long-time-scale fluctuation? by Shalyapin, V. N., Goicoechea, L. J., Koptelova, E., Artamonov, B. P., Sergeyev, A. V., Zheleznyak, A. P., Akhunov, T. A., Burkhonov, O. A., Nuritdinov, S. N., Ullán, A.

“…We present and analyse new R-band frames of the gravitationally lensed double quasar FBQ 0951+2635. These images were obtained with the 1.5-m AZT-22 Telescope…”
Get full text

Instabilities in a nonstationary model of self-gravitating disks. III. The phenomenon of lopsidedness and a comparison of perturbation modes by Mirtadjieva, K. T., Nuritdinov, S. N., Ruzibaev, J. K., Khalid, Muhammad

“…This is an examination of the gravitational instability of the major large-scale perturbation modes for a fixed value of the azimuthal wave number m = 1 in…”
Get full text

Instabilities in a nonstationary model of self-gravitating disks. I. Bar and ring perturbation modes by Nuritdinov, S. N., Mirtadjieva, K. T., Sultana, Mariam

“…The instabilities of bar and ring mode perturbations against the background of a disk oscillating nonlinearly in its own plane are examined in a disk model…”
Get full text

Instabilities in a nonstationary model of self-gravitating disks. II. Warp modes of vertical oscillations by Nuritdinov, S. N., Mirtadjieva, K. T., Ahmad, Iqbal, Ruzibaev, J. K.

“…Gravitational instabilities with respect to warp modes of vertical oscillations are examined for nonlinearly nonequilibrium disk models with isotropic and…”
Get full text

Time delay between images of the lensed quasar UM673 by Koptelova, E, Chen, W. P, Chiueh, T, Artamonov, B. P, Oknyanskij, V. L, Nuritdinov, S. N, Burkhonov, O, Akhunov, T, Bruevich, V. V, Ezhkova, O. V, Gusev, A. S, Sergeyev, A. A, Ehgamberdiev, Sh. A, Ibragimov, M. A

“…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…”
Get full text

Microlensing variability in FBQ 0951+2635: short-time-scale events or a long-time-scale fluctuation? by Shalyapin, V. N., Goicoechea, L. J., Koptelova, E., Artamonov, B. P., Sergeyev, A. V., Zheleznyak, A. P., Akhunov, T. A., Burkhonov, O. A., Nuritdinov, S. N., Ullán, A.

Get full text

Microlensing variability in FBQ 0951+2635: short-timescale events or a long-timescale fluctuation? by Shalyapin, V. N, Goicoechea, L. J, Koptelova, E, Artamonov, B. P, Sergeyev, A. V, Zheleznyak, A. P, Akhunov, T. A, Burkhonov, O. A, Nuritdinov, S. N, Ullan, A

“…We present and analyse new R-band frames of the gravitationally lensed double quasar FBQ 0951+2635. These images were obtained with the 1.5m AZT-22 Telescope…”
Get full text

Time delays in PG 1115+080: new estimates by 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 PG 1115+080, obtained from the monitoring data in filter R with the…”
Get full text

PG 1115+080: variations of the A2/A1 flux ratio and new values of the time delays by 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…”
Get full text