Objective The magnetized planets of our solar system emit powerful magnetospheric low frequency radio radiations (due to plasma instabilities in their auroral circumpolar regions) in the hectometre to kilometre range. Due to its intense magnetic field, only Jupiter emits decameter waves which can propagate through the Earth's ionosphere and thus be studied with ground-based radiotelescopes, using receivers with high temporal and spectral resolution. It has been shown that part of the Jovian radio emission is made up of very fast and narrow-band drifting bursts, a phenomenon also suspected to exist at the other radio planets. The origin of these bursts is certainly a major key for understanding the generation of planetary, and maybe solar and stellar, radio emissions. This project is aimed at an in-depth investigation of Jupiter's fast radio bursts, with the very high sensitivity and resolutions allowed by the UTR-2 Kharkov radiotelescope, world's largest at decameter wavelengths, coupled to a superfast, wide-band receiver developed in Meudon-Nançay, France (acousto-optical-spectrograph with 30 kHz and 10 msec resolution over a 26 MHz band). In addition, a digitization device developed in Graz, Austria, will achieve down to 2 msec time resolution on 30 selected frequencies.After a first successful observational programme extensive high resolution observations will now be performed, allowing for in-depth studies, particular events, statistical studies, search for dynamical chaos in Jupiter radiation, and consequently for building detailed models of the emission generation mechanism, the so-called electron cyclotron maser instability and scenario energy, distribution and locus of accelerated electrons; topology of Jupiter's magnetic field. This will in turn allow for radio remote sensing of planetary and maybe stellar magnetospheres. Joint observations will be performed in parallel at the widely separated Nançay (France) and Graz (Austria) radio observatories, which, despite their smaller telescope areas, will allow for data comparison. In addition to the primary Jovian objective, the very high sensitivity of the UTR-2 + AOS system allows for the ground-based study of Saturnian lightning radio emission, discovered by the Voyager spacecraft. This monitoring will provide deep insights into Saturn's atmospheric dynamics and ionosphere, which is extremely valuable in view of the Cassini mission in preparation.Finally, Jupiter being the most powerful decameter wave emitter of the solar system, the high-sensitivity search for extrasolar planets (possessing a natural decameter-wave radio emission) around nearby stars will be extended to stars closer than 5 pc. The data are still being analyzed but the method appears promising and will be improved through on/off observations able to recognize and eliminate interference. Programme(s) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Topic(s) 11 - Astronomy and Astrophysics Call for proposal Data not available Funding Scheme Data not available Coordinator Centre National de la RechercheScientifique EU contribution No data Address Place Jules Janssen 5 92195 Meudon France See on map Total cost No data Participants (2) Sort alphabetically Sort by EU Contribution Expand all Collapse all National Academy of Sciences of Ukraine Ukraine EU contribution No data Address 310002 Kharkov See on map Total cost No data Space Research Institute Austria EU contribution No data Address 8010 Graz See on map Total cost No data
