In the previous post I spoke of GK Persei cataclysmic variable, without realizing that it had entered one of its quasi-periodic outbursts.
These systems usually alternate long and short eruptions. And for now it This time is quite long, in which GK Per and takes about 20 days above the scale 12. As often happens in these maximum-length, are usually not flat, but they will experience a slow increase in brightness after the quick burst.
at this stage is particularly interesting to study the brightness variations of small amplitude (sometimes not so small) that occur in time spans of hours. They are a real window to watch the behavior of the binary system that causes all the variability in brightness.
These short periods time variations usually appear somewhat recurring charged with high frequency, these are the eclipses between components of the binary system, a feature that occurs almost all cataclysmic variables since most have a favorable inclination to offer the eclipses. However, the appearance of the brightness curve is continually changing and is influenced by the accretion disk (around the compact component of the system), which is the element that brings more light to the brightness of the system. This album has its own rotation and revolution combined with the dual system will result in a whore complex variation, which combine either period.
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