Whereas the confidence interval for the correlogram is based solely on the number of observations, the RI value is based on the robustness of any regular fluctuations in the data.
The detections were made by observing regular fluctuations in the pulsar's rapid radio signals, indicating the planets' complex gravitational effects on the dead star.
The interaction of the two dynamos creates an oscillation of sorts, a regular fluctuation like a, well, a sort of heartbeat for the planet.
It is also classed as a variable star because of its regular fluctuations in luminosity and absolute magnitude.
KIC 05807616 has been in this stage for less than 20 million years, and in addition to its high temperatures, undergoes regular fluctuations, hence the "pulsating" part of that description.
Atmospheric tides can be measured as regular fluctuations in wind, temperature, density and pressure.
There was a small but regular fluctuation in monolatuce filament output, starting nine months ago.
If there are regular fluctuations (e.g. weekly, seasonal), these will be eradicated by using a period equal to the length of the fluctuation.
Often, however, there are regular fluctuations relating to seasonal variation (S).
Before he passed out, Conway was aware of regular fluctuations in the lighting which reminded him of something.