Description du projet
Des modèles améliorés pour l’étude des éléments chimiques dans les explosions de supernovas
Les supernovas à effondrement de cœur sont des explosions spectaculaires d’étoiles géantes à la fin de leur évolution, qui donnent naissance à des étoiles à neutrons et à des trous noirs. Elles figurent parmi les phénomènes énergétiques les plus puissants de l’Univers. Elles jouent un rôle crucial dans notre compréhension de la composition chimique de l’Univers et sont des laboratoires idéaux pour l’étude de la physique des neutrinos et des particules. Financé par le programme Actions Marie Skłodowska-Curie, le projet NUC4SIM vise à améliorer plus avant les modèles de pointe de prédiction de la composition des supernovas qui ne traitent pas les étoiles comme des corps en 1D à symétrie sphérique. À la place, les chercheurs utiliseront des calculs tridimensionnels de premier principe pour étudier plus précisément la composition des éjectas de l’explosion. Ils étudieront également les implications des asymétries au niveau de l’émission de neutrinos et des conversions de saveur des neutrinos.
Objectif
Core-collapse supernova (CCSN) explosions mark the end of the life of stars heavier than 10 times the mass of our sun, they play a crucial role for our understanding of the chemical composition of the universe and they are ideal laboratories for effects of neutrino and particle physics. Current research in astrophysics, astronomy and cosmochemistry that requires theoretical CCSN models still, however, relies predominantly on one-dimensional, i.e. spherically symmetric parameterized calculations. This project aims at advancing the state-of-the-art by calculating the composition of CCSN material based on the most recent, first-principles 3D simulations and by providing the results to the community in accordance with FAIR data management principles. The researcher's background in nuclear and neutrino physics will also allow him to study the implications of uniquely multi-dimensional asymmetries in the neutrino emission and the consequences of neutrino flavor conversions, a quantum effect that changes the particles' spectra, for nucleosynthesis, both of which have never been explored and may lead to observational signatures. To achieve the goals, a new and innovative framework for nucleosynthesis calculations at the Max-Planck Institute for Astrophysics in Garching will be developed, based on an open-source reaction network code, which the researcher has contributed to and that he will apply to unique cutting-edge models. The fellow will obtain in-depth knowledge about supernovae and learn state-of-the-art techniques from the world-class team of Prof. Janka and apply them. He will broaden the scope of his work, complemented by a career development plan, training courses and coaching as well as detailed dissemination and public outreach plans to maximize the impact of the project's outcome. The completion of the project will allow the fellow to become a mature and independent scientist, well-recognized in his field of research.
Champ scientifique
Mots‑clés
Programme(s)
- HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA) Main Programme
Régime de financement
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European FellowshipsCoordinateur
80539 Munchen
Allemagne