Open Questions in 2004
If the light curve is truly
periodic, why is it that after >100 years
there is such uncertainty in the period?
–It is very worrying that we cannot do better, but…
•We have had only two well-observed outbursts
(small number statistics!)
•A lot of people have jumped on the periodicity
bandwagon with ridiculously
short light curves (£20
years!!).
What is the relationship
between the optical and radio outbursts?
Should alternatives to the binary black hole such as a precessing jet (lighthouse model) perhaps be
considered?
