High Energy Astrophysics Colloquium
| Date | Presenter | Contents/Abstract |
|---|---|---|
| 26.6.10 14:00- |
Gaetano Di Marco （Instituto de Física Teórica） |
"The highest-energy gamma-ray and neutrino fluxes: interconnection, propagation and new physics" |
| This presentation aims to dive into the imprints of propagation effects on the highest-energy neutrino and gamma-ray fluxes. Once generated by interconnected processes in the most extreme sources of the Universe, these energetic particles travel vast distances before reaching the Earth, traversing dense background low-energy particles and magnetic fields along the way. Interactions with background particles can initiate cascades, with charged secondaries being deflected by magnetic fields. To characterise propagation effects across astrophysical and cosmological distances, a particular focus is given to the properties of non-thermal sources, but also of the galactic and extragalactic environments. These effects could potentially alter the interpretation of the detected fluxes in current and forthcoming neutrino and gamma-ray experiments. The propagation topics discussed in the talk are put in context with searches for environmental properties and for signatures of non-standard physics, such as heavy dark matter and axion-like particles. |