Emplois, stages

The work will be carried out at LESIA, on the Meudon site of the Paris Observatory. The post-doctoral fellow will be required to interact with the scientific and technical teams of LESIA but also of the Nançay Radio Astronomy Observatory. The person will benefit from IT support from the laboratory and the Observatory, like any researcher.

Large solar eruptions usually exhibit both strong flares and fast CMEs. Until now it has not been possible to disentangle the contributions of these two phenomena to particle acceleration, which is a long-standing problem in heliophysics. The objective of the project is then to clarify the mechanisms leading to particle acceleration during solar eruptive events. The whole electromagnetic spectrum from radio wavelengths to gamma rays will be utilized and imaging data as well as spectral observations will be analyzed. The state of the coronal plasma will be assessed utilizing MHD simulations that take input from magnetograms of the solar surface. The scientific focus is on coronal wave propagation and particle acceleration processes, with the aim at understanding the morphological and physical properties of coronal waves launched in solar eruptions and their role in accelerating electrons and ions to high energies. This post-doctoral fellowship is part of a European project “The Energetic Solar Eruptions : Data and Analysis Tools (SOLER)”, bringing together five laboratories, from Finland, Austria and Germany. Our team leads the WP2, which aims to provide the radio observations and the expertise to analyze them in coordination with the other WP.

–  Participate in the analysis of solar events by providing expertise in radio data (NenuFAR in particular, but also LOFAR and NDA) in collaboration with data provided by the other project collaborators ;
–  Provide a NenuFAR data processing pipeline to facilitate community use of the data ;
–  Participate in the writing of scientific articles and reporting documents necessary for the project ;
–  Present the results at international conferences.

Expertise in radio data processing in the metric-decametric range is mandatory as well as knowledge of solar physics. The person must have skills (and appetite) in programming (Python).