This site provides a summary on the joint radio multi-wavelengths  and  SOHO/LASCO data  analysis  performed for  the events included in  the   article: “Statistical analysis of solar events associated with SSC over one year of solar maximum during cycle 23: propagation and effects from the Sun to the Earth”. Authors: Bocchialini, B. Grison, M. Menvielle,  and other 9 co-authors, under revision, MS No. SOLAR-D-0029_R3.

One of the authors, M. Pick, warmly thanks Florence Henry for her constant help and advices in the realization of this site.

Four criteria based on radio observations were tested:

  • A microwave burst of long duration with a frequency range with a highest frequency reaching  ∼ 2 GHz (A) ;
  • the existence of a radio continuum of long duration typically at metric, decametric or kilometric wavelengths (B);
  • the existence of a type II burst observed by WIND/Waves, i. e. at kilometric wavelengths and, when identified the origin of the type II burst;
  • the possible interaction between the CME, identified as associated with the radio event, with the ambient medium or with another CME; or the presence of two concomitant and very close CMEs.

Observatories list

SOHO is a project of international collaboration between ESA and NASA. The SOHO/LASCO data used here are produced by a consortium of the Naval Research Laboratory (USA), Max-Planck-Institut fur Aeronomie (Germany), Laboratire dAstronomie Spatiale (France), and the University of Birmingham (UK). WIND/Waves radio products and plots are provided by the National Aeronautics and Space Administration (GSFC).
The Nancay Radioheliograph (NRH) and Decameter arrays (DAM) are operated by the Paris Observatory; the data are accessible through the Radio Monitoring site ( and DAM data by request through the Nancay site. The Radio Solar Telescope Network (RSTN) is operated by the U.S. Air Force Weather Agency.
We acknowledge the access to the radio data archives from several sites managed by solar observatories: ARTEMIS, Thermopylae, Athens University; HIRAISO, Japon; Nobeyama, Japon; Ondrejov, Czech Republic; ETH Zurich Radioastronomy, Switzerland. We thank Prof G. Mann and Dr J. Rendtel for providing us with the Potsdam radio spectra.