The blazar 0059+581: Successful prognosis of activity |
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| Authors: | T B Pyatunina D C Gabuzda S G Jorstad N A Kudryavtseva M F Aller H D Aller H Teräsranta |
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| Institution: | (1) Institute of Applied Astronomy, St. Petersburg, Russia;(2) University College of Cork, Cork, Ireland;(3) Institute of Astrophysics, Boston University, Boston, USA;(4) Sobolev Astronomical Institute, St. Petersburg State University, Bibliotechnaya pl. 2, Petrodvorets, 198904, Russia;(5) Astronomy Department, University of Michigan, Ann Arbor, USA;(6) Metsahovi Radio Astronomy Observatory, Metsahovi, Finland |
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| Abstract: | Our earlier joint analysis of light curves for the blazar 0059+581 at 4.8, 8, 14.5, 22, and 37 GHz with high-resolution VLBI images led us to suggest that the activity in this source develops in cycles, or periods, with a duration of about four years, with a “typical scenario” for the development of the source’s activity taking place over a cycle. Based on this analysis, we predicted in 2002 that a new superluminal component would be ejected from the core of this source in a structural position angle ～170° no later than by the end of 2003. A 43-GHz VLBI image obtained on September 14, 2003, as part of a program to monitor the structure of reference sources used for a radio astronomical coordinate system, convincingly confirms the correctness of this prediction. This is the first time in the history of radio astronomy that a new superluminal component has been detected at a predicted time and in a predicted structural position angle. |
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