Hercules A

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)

Sunday, January 24, 2010

Io-D arc January 21 2010

The arc is visible in the STEREO WAVES Behind spectrum. The Io-D and Io-C regions are the result of radiation from the Jovian southern hemisphere. Io-D radiation comes from the leading side of the radiation cones of cyclotron masers near the Jovian auroral regions. Io-C is radiated from the lagging side of the cones.

This page shows other examples of recent Io-D events recorded by SWAVES.

Above is an Io-D event on November 6 2009.