Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26at...24..403v&link_type=abstract
Astronomical and Astrophysical Transactions, vol. 24, Issue 5, p.403-408
Astronomy and Astrophysics
Astronomy
1
Extragalactic Radio Sources, Evolution Of Flux Variability
Scientific paper
Observations of galactic and extragalactic radio sources have been made at the DKR-1000 radio telescope at 102MHz and at the 22m Crimean Astrophysical Observatory radio telescope at 22 and 36GHz. Here, the results of observations of six sources are presented. Time series analysis of the sources reveals quasiperiodic flux variability with timescales from 5 to 8 years. Variations are probably connected with the global evolution of the sources. A new outburst in the 3C 454.3 source, which started in May 2005 at 36 GHz was found. The variability of 3C 454.3 was found to be cyclic, with a mean period of 6.6 years at 22 and 36GHz.
Ryabov Michail
Volvach Alexandr
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