JETS IN 20 AGNS WITH STRONG LONG-TERM VARIABILITY OF 1 - 22 GHZ SPECTRA

Yu. A. Kovalev, A. B. Berlin, Y. Y. Kovalev, N. A. Nizhelsky

Анотація


Results of multifrequency broad band spectra observations and their interpretations by the Hedgehog relativistic jet model are presented for 20 strong variable radio sources. The many years strong variability of well known objects, including BL Lac and OJ 287 for 20 years, is analyzed. Instantaneous 5-7 frequency spectra were measured at the RATAN-600 radio telescope over the period from 1979 to 1999. The strong long-term variability of the spectra is explained by the variability of a continuous relativistic jet with a variable ejection of it from an active nucleus in quasi radial magnetic field.

Ключові слова


galaxies; active - galaxies; jets - BL Lacertae objects; general - quasars; general

Повний текст:

PDF (English)

Посилання


Kardashev N.S.: 1969, Epilogue to the russian edition of the book Burbidge J., Burbidge M., Quasars, Mir, Moscow.

Kovalev Yu.A., & Kovalev Y.Y.: 1996, Odessa Astron. Publ., 9, 163.

Kovalev Yu.A. & Kovalev Y.Y.: 1997, Astrophys. Space Sci., 252, 133.

Kovalev Yu.A.: 1998, Bull SAO, 44, 50.

Kovalev Y.Y., Nizhelsky N.A., Kovalev Yu.A., Berlin A.B., Zhekanis G.V., Mingaliev M.G., Bogdantsov A.V.: 1999, Astron. Astrophys. Suppl., 139, 545.




DOI: https://doi.org/10.18524/1810-4215.1999.12.93033

Посилання

  • Поки немає зовнішніх посилань.


Copyright (c) 2017 Odessa Astronomical Publications

Creative Commons License
Ця робота ліцензована Creative Commons Attribution-NonCommercial 4.0 International License.