New surveys combining Solar Orbiter (EPD and STIX) observations and the ground based radio data at Nançay
We are pleased to announce that new surveys combining Solar Orbiter EPD and STIX observations and the ground based radio data at Nançay are now available on our website If you want to check it out, please select Solar Orbiter options in the Plot-Movies menu. You will find two different composite image : one combining Solar Orbiter and Nançay instruments for the 08-16 UT time period, and the second one is a 24h composite page combining Solar Orbiter and WIND/waves. Zooms on time intervals of, respectively, 1 and 3 hours are also available. More information can be found on the Solar Orbiter Description


The present web site is brought to you by the LESIA , UMR 8109, Observatoire de Paris-Meudon and is made possible thanks to a grant from the french Space Agency CNES.

This radio survey project is a joint effort of the Paris Observatory, the Yunnan Observatory (China), the University of Sydney (Australia), the University of Athens, the University of Ioannina (Greece), the Solar Physics Branch of the Naval Research Laboratory (USA), The Royal Observatory of Belgium and the Indian Institute of Astrophysics (Gauribidanur).

The primary goal of the project is to support multi-wavelength data analysis and space missions dedicated to research on solar activity and on solar-terrestrial relationships, more particularly the SOHO, STEREO, SDO and Solar Orbiter missions.

This site provides daily surveys which include :

  • Radio spectra covering a large frequency range obtained by combining data sets from : Orfees and NDA (Nançay France), YNAO (Yunnan,China), Culgoora or Learmonth (Australia), Artemis (Thermopyle, Greece), GLOSS (Gauribidanur, India), ARCAS and HSRS (Humain, Belguim), spectrographs from WIND and STEREO missions.
  • Processed Radio imaging at two frequencies and access to multi-frequency data from the Nançay Radioheliograph (NRH) providing files readable by Solar Soft.
  • Coronal Mass Ejections (CMEs) occurrences observed by SOHO and STEREO.