Перегляд за Автор "Volvach, L. N."

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  • Ескіз
    Документ
    Flux density evolution of the sources 3C273, 3C279 and 3C454.3 at the frequencies 102 MHz–36.8 GHz
    (2007) Volvach, A. E.; Volvach, L. N.; Larionov, M. G.; Aller, H. D.; Aller, M. F.; Yurovskiy, Yu. Yu.; Ryabov, Myhaylo I. ; Рябов, Михайло Іванович; Madrid : Consejo Superior de Investigaciones Científicas, Instituto Miguel Asín,
    The results of long-term monitoring of the sources 3C273, 3C279 and 3C454.3 at 102 MHz–36.8 GHz are presented. Numerical analysis of irregular temporal rows of the integral fluxes allowed us to detect the quasiperiodic constituents of the emission flux variations. The analysis of the parameters of binary black holes in the central regions of non-stationary objects demonstrates that these super-massive objects have an insignificant variation between the sizes of the orbits of partners, and that they are in the stage of evolution different from the time of merging by a period of less than 104 years.
  • Ескіз
    Документ
    The catalog of periods of the variability of blazars 3C120, 3C273, 3C279, 3C345 and 3C454.3 at centimeter and millimeter wavelengths
    (Odessa I.I. Mechnikov National University, 2009) Volvach, A. E.; Ryabov, Myhaylo I. ; Volvach, L. N.; Sukharev, Artem L.; Aller, H. D.; Aller, M. F.; Рябов, Михайло Іванович
    ccVariations in the radio flux of 3C120, 3C273, 3C279, 3C345, 3C 454.3 are analyzed using long-term monitoring data at five frequencies from 4.8 to 36.8 GHz obtained at the University ofMichigan Radio Astronomy Observatory and the Crimean Astrophysical Observatory. A spectral analysis of the light curves at the various frequencies reveals the presence of periodic components. Using method of model calculations for each of the found period tested its ability to reproduce the observed flux variability at different frequencies. On the basis of the model calculations presented the catalog of the most reliable periods of flux variable of radio sources.