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, August 26, 2012

Io-A on 120826, at Paris Observatory






Many thanks to the Nancay Decametric Array Team at the Nancay Radio Astronomy Station of Paris Observatory, and Professor Imai Laboratory at Kochi National College of Technology in Japan

Sunday, August 19, 2012

Io-A with an arc and some interesting modulation lanes, on 120819, at Paris Observatory









Many thanks to the Nancay Decametric Array Team at the Nancay Radio Astronomy Station of Paris Observatory, and Professor Imai Laboratory at Kochi National College of Technology in Japan

Monday, August 13, 2012

Solar radiation of types II, III, IV, and V, on 120813, at Paris Observatory



Types V and III below


Type II below


Type II below


Type IV below

Many thanks to the Nancay Decametric Array Team at the Nancay Radio Astronomy Station of Paris Observatory

Thursday, August 9, 2012

156 day periodicity in solar type III radiation

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

http://adsabs.harvard.edu/abs/2012ApJ...754L..28L

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

References at:

http://adsabs.harvard.edu/cgi-bin/nph-ref_query?bibcode=2012ApJ...754L..28L&refs=REFERENCES&db_key=AST

Abstract:
"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."

Monday, August 6, 2012

Two beautiful graphics from the Magnetospheres of the Outer Planets Group at the University of Colorado


http://lasp.colorado.edu/mop/resources/graphics/



Fluxtubes connecting the Galilean satellites to Jupiter, plus the aurora at the foot of their fluxtubes - John Clarke & John Spencer



Trajectory of the Juno spacecraft through the magnetosphere of Jupiter - Fran Bagenal & Steve Bartlett

Many thanks !