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Evolution of the Milliarcsecond Polarization Structure of the BL Lacertae Object OJ287

Published online by Cambridge University Press:  03 August 2017

D. H. Roberts ,
D. C. Gabuzda  and
J. F. C. Wardle
D. H. Roberts
Affiliation:
Department of Physics, Brandeis University, Waltham, MA 02254 USA
D. C. Gabuzda
Affiliation:
Department of Physics, Brandeis University, Waltham, MA 02254 USA
J. F. C. Wardle
Affiliation:
Department of Physics, Brandeis University, Waltham, MA 02254 USA

Abstract

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The λ6 cm total intensity and polarization structures of OJ287 have been determined at two epochs a year apart. At each epoch the source can be modeled as a linear structure consisting of a core and two knots at position angle PA ≃ −115°. This structure expanded slightly over a year, each knot increasing its separation from the core by ≃ 0.3 mas, suggesting an apparent superluminal velocity of ≃ 3.3h−1c for each.

Type
Extragalactic
Information
Symposium - International Astronomical Union , Volume 129: The Impact of VLBI on Astrophysics and Geophysics , 1988 , pp. 159 - 160
Copyright
Copyright © Reidel 1988 

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