Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.sao.ru/cats/~satr/RFSymp/abs/39_Volvach.ps Дата изменения: Mon Oct 9 11:14:25 2006 Дата индексирования: Tue Oct 2 08:57:20 2012 Кодировка: Поисковые слова: annular solar eclipse

THE COMBINED RADIO AND OPTICAL INVESTIGATIONS
OF THE INTRADAY VARIABILITY OF ACTIVE GALACTIC
NUCLEI
A.E. Volvach 1 , V.S. Bychkova 2 , N.S. Kardashev 2 ,
M.G. Larionov 2 , V.V. Vlasyuk 3 , O.I. Spiridonova 3
1 SRI Crimean Astrophysical Observatory, Ukraine,
2 Astro Space Centre of the Lebedev Physical Institute, Russia
3 Special Astrophysical Observatory of the Academy Science, Russia
volvach@crao.crimea.ua
The combined radio and optical observations of the active galactic nuclei 0133+476, 1633+382,
2145+067, 2251+158 were performed in 2004­2006. The aim of analysis was to detect an
intraday flux variability and to search for its possible correlation in radio and optical wave­
lengths. Observations were conducted with the use of the RT­22 radio telescope (SRI
CrAO) at 22 and 36 GHz and the 1­m Zeiss­1000 reflector of SAO RAS with CCD camera.
During observations we found no significant fluctuations of fluxes at both ranges. At
the level of 10% from the average amplitude more high activity of the object 1633+382
was detected at 36 GHz in May 2004 then the one in May 2005. The reason of it may
be a passive phase of the object after the burst in 2002. The observable flux variation in
0133+476 at the time scale of one hour were noticed in October 2005 but not optical range.
Such flux behaviour may indicate to absence of the identical area for radio and optical
emission after matter collimation in the black hole polar region.
References
Volvach A.E., Larionov M.G., Aller M., Aller H.: Radio Astronomy and Radio Physics,
2005. 10, N.4, 377.