ANALYSIS OF THE VARIABILITY AND THE SPECTRUM OF PERIODS OF EXTRAGALACTIC SOURCE OJ 287 IN THE RADIO WAVES
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Файли
Дата
2013
Назва журналу
Номер ISSN
Назва тому
Видавець
Astroprint
Анотація
We analyzed long-term monitoring of data
flux of extragalactic source OJ 287 obtained at frequencies of 14.5 GHz (1974-2011), 8 GHz (1971-2011), 4.8GHz and (1979-2010), on the RT-26, University of Michigan, USA. Variability of the flux of the radio source was investigated by applying wavelet analysis. There were identified long-period
(in the range of 3.6 to 13.6 years) and short (in the range from 1.2 to 1.8 years) components at all studied frequencies and it
was determined the time of their existence. The "spectra periods" for each year of observation were built to assess the
contribution of individual periods in the formation of the most powerful phase of activity of the radio source. The
dynamics of the manifestations of active periods at different frequencies was observed. The obtained data was compared
with the results of MOJAVE VLBI monitoring for the period of 1995-2012 years at a frequency of 15.4 GHz. It allowed to
investigate the structure of emissions during periods of manifestation activity maxima.
Опис
Odessa Astronomical publications / Одесская астроном. обсерватория . – Одесса : Астропринт, 2013 . – Vol.26/2
Ключові слова
long-term monitoring, RT-26, extragalactic source OJ 287, activity of the radio source, MOJAVE VLBI monitoring, activity maxima
Бібліографічний опис
Odessa Astronomical Publications