
The optical-infrared outburst showed a double maximum with separation »13 months.
Only the second maximum is seen in the radio data.
Even at 860GHz (0.35-mm) there is no evidence of the first maximum.
OJ287 (apparently) was not in outburst in 1994 in ISO data, but the outburst is seen clearly at 2.2
microns.
Why the differences?

