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  1. No Access

    Article

    Variability of Cyg X-1 (V1357 Cyg) in 1995–1996 during the hard and soft X-ray spectral states

    We report photoelectric UBVR observations of Cyg X-1 with the 1-m Tien-Shan and 48-cm Mount Maidanak reflectors from October 1995 through November 1996. The orbital light curve is represented by the model of a ti...

    E. A. Karitskaya, V. P. Goranskii, K. N. Grankin, S. Yu. Mel'nikov in Astronomy Letters (2000)

  2. No Access

    Chapter and Conference Paper

    Optical Flares of Cygnus X-1

    Photoelectric observations of Cyg X-l in 1996-97 fulfilled in Tien-Shan, Kazakhstan (WBVR), Mt. Maidanak, Uzbekistan (UBVR) and in Crimea, Ukraine (UBV) have detected unusual optical flare activity. During May...

    N. G. Bochkarev, E. A. Karitskaya, V. M. Lyuty in The Hot Universe (1998)

  3. No Access

    Article

    Optical pre-nova identification for the X-ray Nova GRO J0422+32 (Nova Persei, 1992)

    The X-ray Nova GRO J0422+32 in its low brightness has been identified with a B∼ 21 m , R∼20 m star on Palomar Sky Survey glass copies. The scan...

    E. A. Karitskaya, V. P. Goranskij in Space Science Reviews (1995)

  4. No Access

    Article

    Polarization of intrinsic radiation of tidally distorted stars with electron-scattering atmospheres

    Linear polarization of radiation emitted by tidally distorted stars as a function of the binary system phase is computed, taking into account true absorption and the scattering of light on free and bound elect...

    N. G. Bochkarev, E. A. Karitskaya in Astrophysics and Space Science (1985)

  5. No Access

    Article

    Distribution of polarization and intensity of radiation across the stellar disk and numberical values of atmospheric characteristics governing this distribution

    Computations of polarization and intensity of radiation from a unit stellar surface area are presented, as well as a study of the numerical characteristics of atmospheres — single-scattering albedo Ωλ and the ini...

    N. Bochkarev, E. A. Karitskaya, N. A. Sakhibullin in Astrophysics and Space Science (1985)

  6. No Access

    Article

    Polarization of intrinsic radiation of tidally distorted stars with electron-scattering atmospheres

    The variable linear polarization of the intrinsic radiation emitted by tidally distorted stars was computed with approximation of pure electron or Rayleigh scattering in the atmospheres. A precise form of the ...

    N. G. Bochkarev, E. A. Karitskaya, N. I. Shakura in Astrophysics and Space Science (1985)