Dr. Irene Salmaso (INAF/OACN)
17 November 2025
11:30, Aula Piazzi
Abstract:
Supernovae (SNe) interacting with a dense circumstellar medium (CSM) provide unique insights into the final evolutionary stages of massive stars. The interaction between the SN ejecta and the CSM influences the light curves, often prolonging and enhancing their luminosity, and significantly affects the spectrophotometric evolution. Moreover, properties of the progenitor, as well as mass and geometry of the CSM, contribute to the observed diversity of interacting SNe. The strong shock formed by the fast-expanding ejecta colliding with the CSM also creates ideal conditions for particle acceleration, facilitating the production of high-energy (HE) neutrinos above 1 TeV. However, no secure detection of a HE neutrino associated with a SN has been confirmed to date, largely due to the high frequency of SN events and the large error boxes for neutrino detection. In this talk, I will discuss our current understanding of strongly interacting SNe, showing the diversity in their parameters and examining how these factors influence HE neutrino production.