CV Disks through outburst
€By
following the X-ray and optical brightness of the disk during an outburst
(needs coordinated
observations) it can be seen that the X-ray brightness lags the optical brightness
€This is
because the outburst starts in the middle/outer parts of the disk,
then propagates
inwards
€This is the result of an instability, or because of increased mass
accretion rates from the secondary (Bath/Osaki debate)
Baptista & Catalàn (2000)
Mason et al (1978)