«These data recover the well - known solar 5 - minute oscillation at a peak of 3 mHz (5.5 min) from the
disk - averaged light with a radial - velocity amplitude of only 47 cm / s, an incredibly
small velocity from a stellar point of view», says Prof. Strassmeier, PEPSI principal investigator and director of the Cosmic
Magnetic Field branch at the Leibniz Institute for Astrophysics Potsdam (AIP).