Descrizione del progetto
Comprensione della struttura degli urti senza collisioni
Le onde d’urto sono presenti nell’aria e nell’acqua sulla Terra e in una vasta gamma di plasmi nell’universo, i quali generalmente sono senza collisione. Il progetto SHARP, finanziato dall’Unione europea, intende contribuire alla comprensione della struttura degli urti senza collisione in ambienti diversi e dei processi di accelerazione in tutte le fasi degli urti. Il progetto intensificherà lo sfruttamento dei dati eliosferici ed eseguirà un’analisi comparativa inclusiva dell’arco terrestre e delle collisioni planetarie e interplanetarie. SHARP combinerà i risultati delle misurazioni in situ di urti eliosferici e di supernove residue con l’osservazione remota di urti astrofisici a distanza. Il progetto svilupperà anche una banca dati di alto livello di urti e strumenti innovativi per l’analisi degli stessi.
Obiettivo
"SHARP aims to achieve a major leap in understanding of the structure of collisionless shocks in various environments and of the acceleration processes at all shock scales. This will be done by: (a) intensifying exploitation of the heliospheric data and performing a comprehensive comparative analysis of the Earth bow shock, planerary shocks, and interplanetary shocks, (b) establishing a collaboration of the world renown groups working together on all aspects of the shock physics, (c) utilizing and combining the knowledge obtained in in situ measurements on heliospheric shocks and in remote observations of distant astrophysical shocks, and (d) developing a high-level databases of shocks and advanced tools for the shock analysis and making them public. The research will encompass the three ""pillars"" of the shock physics: the shock structure, the shock energy deposition, and the radiation from the shock energized particles. The study will address the most fundamental unsolved issues of the shock physics: the structural changes of the shock with the increase of the Mach number, the intimate relation between the shock fields and the particle distributions, the injection problem, and the electron acceleration puzzle. The research will bridge over the in situ observed heliospheric shocks and supernovae remnant (SNR) shocks which are observed only indirectly, by emission from energized particles, by combining the knowledge of the heliospheric shock structure and constraints provided by the radiation measurements from SNR shocks. Starting with the observational data, the research will ultimately provide new diagnostic measures for the ongoing and future experiments, such that will allow to improve the efficiency of the measurements and data analysis, contribute to understanding of solar wind interaction with the Earth, and advance understanding of the most powerful accelerators in the Universe."
Campo scientifico
Programma(i)
Argomento(i)
Meccanismo di finanziamento
RIA - Research and Innovation actionCoordinatore
00560 Helsinki
Finlandia