Flare activity of the blazar 3C454.3 from gamma to radio wavelengths in 2004-2010
|1Volvach, AE, 2Larionov, MG, 1Volvach, LN, 2Kutkin, AM, 3Villata, M, 3Raiteri, CM, 4Lahteenmaki, A, 4Tornikoski, M, 4Savolainen, P, 4Tammi, J, 5Aller, MF, 5Aller, HD, 6Sergeev, SG, 6Doroshenko, VT, 6Efimov, Yu.S, 6Klimanov, SA, 6Nazarov, SV, 6Borman, GV, 2Pushkarev, AB, 7Zhdanov, VI, 8Fedorova, EV, 9Vavilova, IB, 9Chesnok, NG |
1Laboratory of Radio Astronomy, SRI Crimean Astrophysical Observatory, Katsiveli, AR Crimea, Ukraine
2Astro Space Center of P.N. Lebedev Physics Institute, Moscow, Russia
3Turin Astronomical Observatory of the National Astrophysics Institute, Turin, Italy
4Radio Observatory Metsahovi, University. Aalto, Finland
5Radio Observatory of the Michigan University, AnnArbor, USA
6SRI Crimean Astrophysical Observatory, Nauchnyj, AR Crimea, Ukraine
7Astronomical Observatory of the Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
8Astronomical Observatory of the Taras Shevchenko National University of Kyiv,Kyiv, Ukraine
9Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
|Kosm. nauka tehnol. 2011, 17 ;(2):68-76|
|Publication Language: Russian|
The variations of the flux from the active nucleus of the galaxy 3С454.3 are analyzed on the basis of the long-term monitoring at five radio frequencies from 4.8 to 37 GHz which was carried out at the SRI Crimean Astrophysical Observatory, the Metsahovi Radio Observatory of the Aalto University, and the Radio Observatory of the Michigan University. The dynamics of three powerful flares in this active nucleus from 2004 to 2010 is considered using observations in the gamma (0.1-300 GeV), X-ray (2-10 keV, 15-50 keV), radio and optical wavelengths.
Some delays of the flare development for the different wavelengths are determined. A logarithmic relationship between flare delays and wavelengths, from gamma to radio regions, which is retained from flare to flare, is found. Orbital periods of companions in binary systems of supermas-sive black holes, the duration of flare phenomena in optical and radio wavelengths and some characteristics of the ionized medium around central regions of active galaxy nucleus are estimated. A model for localization of emitting regions in the jet at different wavelengths during the development of flare phenomena is offered.
|Keywords: active galaxy nucleus, flare activity, wavelengths|
10. Ritzerveld R. The diffuse nature of Strömgren spheres. Astron. and Astrophys., 439 (2), L23— L26 (2005).
12. Sergeev S. G., Doroshenko V. T., Golubinskiy Y. V., et al. Lag-luminosity relationship for interband lags between variations in B, V, R, and I bands in active galactic nuclei. Astrophys. J., 622, 129—135 (2005).