The auroral heartbeat of Saturn

At www.physorg.com/print200123247.html … a paper in Geophysical Research Letters (Aug 6th) claims that Saturn’s aurora, a low ultraviolet glow which illuminates the upper atmosphere near the poles, pulses roughly at one a day (Saturnian time). The study used Hubble Space Telescope images from 2005 to 2009. There is a pulse to radio emissions too and the aurora heartbeat appears to be in tandem with the radio emissions