Speaker
Description
The intense star-forming activity typical of starburst galaxies results in unique
conditions for high-energy particles. The enhanced supernova rate associated
with such star formation can in fact transfer a large amount of power to non-
thermal particles which, in turn, can lose most of their energy in the dense and
perturbed starburst environment before being able to escape it. I will discuss the
transport conditions in starburst galaxies and their multimessenger implications
in terms of gamma rays and high-energy neutrinos. The starburst activity can
also launch and sustain powerful galactic wind bubbles extending for several
kiloparsecs. I will illustrate how particles can be accelerated up to hundreds of
PeV at shocks produced in such winds and I will highlight the associated high-
energy radiation. Finally, by taking into account the star formation history of
the Universe, I will assess the potential contribution of starburst galaxies to the
observed diffuse flux of gamma rays, high-energy neutrinos and cosmic rays at
energies beyond the Knee.
