Orateur
Description
Astrophysics is the Physics of the Universe. It applies the laws and principles of physics to understand how objects in the cosmos form, behave, and evolve. A key branch of this field is Nuclear Astrophysics, which focuses on how nuclear processes drive cosmic phenomena (in particular, energy production in stars, element synthesis, and stellar evolution). This talk explores the current nuclear physics needs in astrophysical modeling, with emphasis in stellar explosions. We will review which are the main nuclear paths and processes that govern nucleosynthesis in stars, identifying key uncertain nuclear reactions from sensitivity studies. We will confront experimental vs. theoretical data, needed to estimate reaction cross sections. Additional aspects, at the crossroads between nuclear and atomic physics, such as screening, EOS, and opacities, will also be discussed.
