The Lehto & Valtonen Model
Finnish astronomers Mauri Valtonen & Harry Lehto propose
that OJ287 has:
A binary black hole with masses 17x10
A rest frame orbital period of 8.9 years.
Eccentric orbit, rather like a comet such as Encke.
35º per orbit.
Superflares due to massive infall from the accretion disk caused by
gravitational perturbations at pericentre.
Lifetime against decay by emission of gravitational radiation of
Implies progressive decrease of orbital period (