Observations of OJ 287 from the Geodetic VLBI Archive of the Washington Correlator

Details Observations of OJ 287 from the Geodetic VLBI Archive of the Washington Correlator Observations of OJ 287 from the Geodetic VLBI Archive of the Washington Correlator

1999-03-02

arxiv.org/abs/astro-ph/9903047v1

Astronomy and Astrophysics

Astrophysics

9 pages, 5 included figures, emulateapj.sty, accepted to The Astrophysical Journal

Scientific paper

10.1086/307475

We present 27 geodetic VLBI maps of OJ 287 obtained from the archive of the Washington correlator. The observations presented here were made between 1990 October and 1996 December. During this period a sequence of six superluminal components has been identified. We measured the proper motion of these components to be approximately 0.5 mas/yr, which is about twice as high as that seen in previous VLBI observations. These results imply a higher component ejection rate than previously observed, in good agreement with the observed occurrences of radio outbursts. We have examined a possible connection between VLBI components and optical flares in the framework of a binary black hole system.

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