Speaker
Francesca Calore
Description
Axion-like particles (ALPs) and other feebly interacting particles (FIPs) can be efficiently produced in core collapse SNe and escape the SNe envelope.
During propagation in the interstellar medium and interaction with the environment, depending on their couplings, they may leave trace of their presence in cosmic backgrounds of high-energy radiation, from X to gamma rays, as well as specific signatures such as a 511 keV line signal.
I will illustrate how high-energy astrophysics observations can be exploited to look for specific imprints of ALPs and other FIPs over a broad range of wavelengths.
