Abstract Data analysis of long-term multi-frequency monitoring of active galactic nucleus (AGN) AO 0235+164 in the millimeter wavelength range are presented. Using the harmonic analysis of observational data, the presence of orbital and precession periods in the binary system from supermassive black holes (SBHs) is determined: T orb ≈ 2 years and T pr ≈ 8 years. The indicated periods are in agreement with similar periods found for other bright AGNs. In the AO 0235+164 system, other combinations of periodic components are also determined, which are possibly related to the nutation period. According to observational data of the development of flare phenomena at different frequencies, a cross-correlation analysis was performed and the shift delays of the flare times occurring at different wavelengths were determined. It was confirmed, by analogy with other AGNs, an empirical relation, to which the delays of flux variations with a frequency are obeyed having the form of the inverse logarithmic dependence. The nature of the delays can indicate the internal character of the variability of AGN emission fluxes obtained at frequencies of the centimeter and millimeter wavelength ranges. The hypothesis of jet activity of AGNs is confirmed, in which plasma formation, moving from the sources of ejection, becomes optically thin consistently on ever longer waves. Decreasing delays between frequencies for the flare in 2015 compared to the previous flare in 2008–2009 indicates a possible configuration variation in AO 0235+164 associated with decreasing in the angle between ejections and the direction to the observer.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Flare Activity of Blazar AO 0235+164


    Beteiligte:
    Volvach, A. E. (Autor:in) / Volvach, L. N. (Autor:in) / Larionov, M. G. (Autor:in) / Lähteenmäki, A. (Autor:in) / Tornikoski, M. (Autor:in) / Tammi, J. (Autor:in) / Järvelä, E. (Autor:in) / Vera, R. J. C. (Autor:in) / Chamani, W. (Autor:in) / Enestam, S. (Autor:in)

    Erschienen in:

    Cosmic Research ; 57 , 2 ; 85-90


    Erscheinungsdatum :

    2019-03-01


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Flare Activity of Blazar AO 0235+164

    Volvach, A. E. / Volvach, L. N. / Larionov, M. G. et al. | Online Contents | 2019


    Aerodynamic Modeling and Optimization of Sideslip Perching Maneuver (AIAA 2015-0235)

    Alikhan, Mir / Go, Tiauw H. | British Library Conference Proceedings | 2015


    Collision Avoidance Maneuver Simulation of Tilt Rotor Unmanned Aerial Vehicle (AIAA 2006-0235)

    Hwang, S. / Lee, M. K. / Oh, S. et al. | British Library Conference Proceedings | 2006


    Evolution of Disturbances Due to Distributed Surface Roughness in Laminar Boundary Layers (AIAA 2014-0235)

    Sharma, A. / Drews, S. / Kuester, M.S. et al. | British Library Conference Proceedings | 2014


    Bi-Level Optimization of a Conceptual Metallic Wing Box with Stiffness Constraints (AIAA 2016-0235)

    Noevere, August T. / Wilhite, Alon W. | British Library Conference Proceedings | 2016