Séminaire Doctoral / Seminar PhD |
| « Feedback in galaxies: the role of cosmic rays » |
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Nimatou Seydi Diallo |
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Cosmic rays are high-energy particles that interact with plasma via magnetic fields. They are an important energy component of galaxies, and numerical simulations have shown that cosmic rays can significantly affect galaxy dynamics and thus constitute a major source of feedback in galaxies.
However, this influence depends on the propagation properties of cosmic rays, which are still uncertain, and accurate modeling of their energy distribution is needed to better constrain theoretical models with direct observations. To address this issue, I have developed a new module for cosmic rays that will be implemented in the RAMSES code for galaxy simulation, and which takes into account their spectral energy distribution. In this talk, after a brief review of the state of the art, I will present the numerical scheme of my code and the results of the various simulations of cosmic ray evolution under different processes that I have carried out. |
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vendredi 26 janvier 2024 - 16:00 Salle Entresol Daniel Chalonge, Institut d'Astrophysique |
| Page web du séminaire / Seminar's webpage |