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OJ287 as a binary system

  • M. Valtonen
  • A. Sillanpää
  • S. Haarala
  • L. Valtaoja
  • E. Valtaoja
  • B. Sundelius
  • G. G. Byrd
  • H. Teräsranta
  • S. Urpo
I. Spectral Studies in the Optical, Ultraviolet and Infrared
Part of the Lecture Notes in Physics book series (LNP, volume 307)

Abstract

The historical optical light curve of OJ287 shows repeated outbursts at 11.65 yr intervals. Making use of computer modeling, we interpret this as resulting from a 9 yr orbital period in a binary system. Variability time scales are used to construct a mass model of the binary system, with derived masses of 5.109 M and 2·107 M, We discuss how binary systems such as in OJ287 may result from mergers of galaxies. We infer that the system must contain also a third supermassive black hole.

Keywords

Black Hole Radio Source Active Galactic Nucleus Gravitational Radiation Binary Energy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • M. Valtonen
    • 1
  • A. Sillanpää
    • 1
  • S. Haarala
    • 1
  • L. Valtaoja
    • 1
  • E. Valtaoja
    • 1
  • B. Sundelius
    • 2
  • G. G. Byrd
    • 3
  • H. Teräsranta
    • 4
  • S. Urpo
    • 4
  1. 1.Turku University ObservatoryTurkuFinland
  2. 2.Department of AstronomyUniversity of GothenburgGothenburgSweden
  3. 3.Department of Physics and AstronomyUniversity of Alabama TuscaloosaAlabamaUSA
  4. 4.Radio LaboratoryHelsinki University of TechnologyEspooFinland

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