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)

Thursday, August 9, 2012

156 day periodicity in solar type III radiation

I refer to Lobzin, Cairns, and Robinson, 2012:


Rieger-type Periodicity in the Occurrence of Solar Type III Radio Bursts.

References at:


"This Letter presents the first observations of a Rieger-type periodicity with the period of 156 days in the occurrence rate of solar coronal type III radio bursts. The periodicity was detected during the time interval from 2000 June 22 to 2003 December 31. This interval partially contains the maximum and the declining phase of solar cycle 23.

The radio spectra were provided by the Learmonth Solar Radio Observatory in Western Australia, part of the USAF Radio Solar Telescope Network."