The illustration shows a complex event lasting for about 3 hours at Nancay, near midday.
Late in the day, STEREO WAVES B recorded another long period of strong bursting.
Hercules A
Radio-Optical View of the Galaxy Hercules A - Many thanks to: NASA, ESA, S. Baum and C. O'Dea (RIT), R. Perley and W. Cotton (NRAO/AUI/NSF), and the Hubble Heritage Team (STScI/AURA)