Search Results - "SPIRIDONOVA, O. I"

PN G068.1+11.0: A young pre-cataclysmic variable with an extremely hot primary by Mitrofanova, A. A., Shimansky, V. V., Borisov, N. V., Spiridonova, O. I., Gabdeev, M. M.

“…An analysis of spectroscopic and photometric data for the young pre-cataclysmic variable (PCV) PN G068.1+11.0, which passed through its common-envelope stage…”
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Spectral and photometric studies of the polar USNO-A2.0 0825-18396733 by Gabdeev, M. M., Borisov, N. V., Shimansky, V. V., Spiridonova, O. I.

“…Results of photometric and spectral studies of the new magnetic cataclysmic variable (polar) USNO-A2.0 0825-18396733 are presented. Photometric data in the B ,…”
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HBHA 4705-03: A new cataclysmic variable by Yakin, D. G., Suleimanov, V. F., Vlasyuk, V. V., Spiridonova, O. I.

“…Results of photometric and spectroscopic studies for the new eclipsing cataclysmic variable star HBHA 4705-03 with an orbital period of 0.1718 days are…”
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Non-stationary emission of the blazar S4 0954+658 over a wide range of wavelength by Volvach, A. E., Bychkova, V. S., Larionov, M. G., Kardashev, N. S., Volvach, L. N., Vlasyuk, V. V., Spiridonova, O. I., Lähteenmäki, A., Tornikoski, M., Aller, M. F., Aller, H. D., Pooley, G., Carrasco, L., Porras, A., Recillas, E.

“…Data from long-term multi-frequency monitoring are used to analyze variations in the flux density of the active galactic nucleus S4 0954+658. These data were…”
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Long-term monitoring of the blazars AO 0235+164 and S5 0716+714 in the optical and radio ranges by Bychkova, V. S., Vol’vach, A. E., Kardashev, N. S., Larionov, M. G., Vlasyuk, V. V., Spiridonova, O. I., Vol’vach, L. N., Lähteenmäki, A., Tornikoski, M., Aller, M. F., Aller, H. D.

“…Long-term, multi-frequency optical and radio monitoring data for the Active Galactic Nuclei (AGNs) AO 0235+164 and S5 0716+714 are used to derive the…”
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Modeling the optical radiation of the precataclysmic variable SDSS J212531-010745 by Shimansky, V. V., Borisov, N. V., Nurtdinova, D. N., Solovyeva, Yu. N., Sakhibullin, N. A., Spiridonova, O. I.

“…Optical observations are analyzed to derive a set of basic parameters for the precataclysmic variable star SDSS J212531-010745, whose primary is a PG1159-type…”
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Optical Study of the Polar BM CrB in a Low State by Kolbin, A. I., Borisov, N. V., Burenkov, A. N., Spiridonova, O. I., Bikmaev, I. F., Suslikov, M. V.

“…We have performed spectroscopic and photometric studies of the poorly explored polar BM CrB. Based on ZTF survey data, we have revealed three brightness states…”
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Photometry of the poorly studied galactic open star clusters King 13, King 18, King 19, King 20, NGC 136, and NGC 7245 by Glushkova, E. V., Zabolotskikh, M. V., Koposov, S. E., Spiridonova, O. I., Vlasyuk, V. V., Rastorguev, A. S.

“…We present the results of our BV R c I c CCD photometry for six Galactic open star clusters toward the Perseus spiral armperformed at the Special Astrophysical…”
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Spectroscopic and Photometric Study of the New Eclipsing Polar Gaia23cer by Kolbin, A. I., Pavlenko, E. P., Kochkina, V. Yu, Vinokurov, A. S., Shugarov, S. Yu, Sosnovskij, A. A., Antonyuk, K. A., Antonyuk, O. I., Pit’, N. V., Suslikov, M. V., Galimova, E. K., Borisov, N. V., Burenkov, A. N., Spiridonova, O. I.

“…We present the results of our optical study of the eclipsing polar Gaia23cer. We analyze the orbital brightness variability in high ( ) and low ( ) states. The…”
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The intermediate-age pre-cataclysmic variables SDSS J172406+562003 and RE J2013+4002 by Shimansky, V. V., Borisov, N. V., Nurtdinova, D. N., Mitrofanova, A. A., Vlasyuk, V. V., Spiridonova, O. I.

“…We have analyzed the physical status of the pre-cataclysmic variables SDSSJ172406+562003 and RE J2013+4002, which have evolved after their common-envelope…”
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Long-term optical and radio monitoring of the quasars S5 0716+714 and 4C 38.41 on various time scales by Volvach, A. E., Volvach, L. N., Bychkova, V. S., Kardashev, N. S., Larionov, M. G., Vlasjuk, V. V., Spiridonova, O. I., Lachteenmaki, A., Tornikoski, M., Nieppola, E., Aller, M. F., Aller, H. D.

“…We present the results of long-term radio and optical monitoring of two radio-loud quasars. The aim of the work was to study the objects’ variability on…”
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PG 1316+678: A young pre-cataclysmic binary with weak reflection effects by Shimansky, V. V., Borisov, N. V., Bikmaev, I. F., Sakhibullin, N. A., Shimanskaya, N. N., Spiridonova, O. I., Irtuganov, E. N.

“…The PG 1316+678 star is classified as a pre-cataclysmic binary, as is evidenced by its photometric and spectroscopic observations. Its orbital period is…”
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Is WD 1437-008 a cataclysmic variable? by Shimansky, V. V., Nurtdinova, D. N., Borisov, N. V., Spiridonova, O. I.

“…Comprehensive observations of a close binary candidate WD 1437-008 are performed. The shape and amplitude of the observed brightness variations are shown to be…”
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Optical and Radio Variability of the Blazar S4 0954+658 by Vlasyuk, V. V., Sotnikova, Yu. V., Volvach, A. E., Spiridonova, O. I., Stolyarov, V. A., Mikhailov, A. G., Kovalev, Yu. A., Kovalev, Y. Y., Khabibullina, M. L., Kharinov, M. A., Yang, L., Mingaliev, M. G., Semenova, T. A., Zhekanis, P. G., Mufakharov, T. V., Udovitskiy, R. Yu, Kudryashova, A. A., Volvach, L. N., Erkenov, A. K., Moskvitin, A. S., Emelianov, E. V., Fatkhullin, T. A., Tsybulev, P. G., Nizhelsky, N. A., Zhekanis, G. V., Kravchenko, E. V.

“…We present an optical-to-radio study of the BL Lac object S4 0954+658 observations during 1998–2023. The measurements were obtained with the SAO RAS Zeiss-1000…”
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Analysis of the optical emission of the young precataclysmic variables HS 1857+5144 and ABELL 65 by Shimansky, V. V., Pozdnyakova, S. A., Borisov, N. V., Bikmaev, I. F., Vlasyuk, V. V., Spiridonova, O. I., Galeev, A. I., Mel’nikov, S. S.

“…We analyze the physical state and the properties of the close binary systems HS 1857+5144 and Abell 65. We took the spectra of both systems over a wide range…”
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Photometric study of open clusters Berkeley 96, Berkeley 97, King 12, NGC 7261, NGC 7296 and NGC 7788 by Glushkova, E. V., Zabolotskikh, M. V., Koposov, S. E., Spiridonova, O. I., Leonova, S. I., Vlasyuk, V. V., Rastorguev, A. S.

“…We present BVR c I c CCD photometry in the fields of six Galactic open clusters toward the Perseus spiral arm. These data, complemented with J, H and K S…”
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Optical Photometric and Radio Monitoring of Gamma-ray Loud Blazars by Bychkova, V. S., Kardashev, N. S., Larionov, M. G., Volvach, A. E., Vlasjuk, V. V., Spiridonova, O. I., Lächteenmäki, A., Tornikoski, M., Hovatta, T., Nieppola, E., Torniainen, I., Aller, H. D., Aller, M. F.

“… We present the results of multi-years optical and radio monitoring of radio-loud quasars 0716+714 and 1633+382, aimed at searching the flux variations and…”
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Characteristics of the Flare Phenomenon in Blazar AO0235+164 in Gamma, Optical, and Radio Bands by Bychkova, V. S., Volvach, A. E., Volvach, L. N., Kardashev, N. S., Larionov, M. G., Vlasyuk, V. V., Spiridonova, O. I., Lähteenmäki, A., Tornikoski, M., Tammi, J., Järvelä, E., Vera, R. J. C., Chamani, W., Enestam, S.

“…The active core of the galaxy AO0235+164 is monitored in the optical and radio bands at millimeter wavelengths. Using the multifrequency data obtained in…”
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Astronomical searches for axions: observations at the SAO 6-m telescope by Gnedin, Yu. N., Dodonov, S. N., Vlasyuk, V. V., Spiridonova, O. I., Shakhverdov, A. V.

“…The astronomical methods of searching for light Goldstone bosons are discussed. The basic idea is to use processes of coupling between Goldstone bosons and…”
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The rapid variability of blazars at optical wavelengths by Bychkova, V S, Kardashev, N S, Vlasyuk, V V, Spiridonova, O I

“…We monitored five active galactic nuclei in the R optical band with a CCD mounted on the 1-m Zeiss-1000 telescope of the Special Astrophysical Observatory from…”
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