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

Автор(и)

  • Yu. A. Kovalev Astro Space Center of the Lebedev Physical Institute, Profsoyuznaya 84/32, 117810 Moscow, Russia, Russian Federation
  • A. B. Berlin Special Astrophysical Observatory, Nizhny Arkhyz, Karachaevo-Cherkessia, 357147 Russia, Russian Federation
  • Y. Y. Kovalev Astro Space Center of the Lebedev Physical Institute, Profsoyuznaya 84/32, 117810 Moscow, Russia, Russian Federation
  • N. A. Nizhelsky Special Astrophysical Observatory, Nizhny Arkhyz, Karachaevo-Cherkessia, 357147 Russia, Russian Federation

DOI:

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

Ключові слова:

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

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.

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.

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Опубліковано

2017-03-16

Номер

Том 12 (1999)

Розділ

Статті

Ліцензія

Авторське право (c) 2017 Odessa Astronomical Publications

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Ця робота ліцензується відповідно до Creative Commons Attribution-NonCommercial 4.0 International License.

Відповідно Закону України про авторське право і суміжні права N 3792-XII від 23 грудня 1993 року