The 2005 outburst and the pre-1948 data show
that the light curve
is not really periodic (sorry guys, but youre wrong!).
OJ287
will show periodicity for »50 years at a time, but no longer.
The
periodicity has just broken down (again).
But
the binary singularity model can explain this behaviour.
The
lifetime of the system against gravitational radiation is ~106 years
π There will be very few close AGN binaries because they have a short
lifetime. The black holes coalesce rapidly.
The
next 12 months will make or break the rival theories.
To
a large degree it will be amateur astronomers who show which theory (if any) is correct.