Orateur
Description
Axion-like particles (ALPs) are hypothetical pseudo Nambu Goldstone bosons predicted in numerous extensions of the standard model, which may represent viable dark matter candidates and are closely related to the axion.
Axions and ALPs produced in stars, and notably in core collapse supernovae, can be detected through their coupling to photons, which induces conversion of ALPs into photon and back when travelling through external magnetic fields.
In my presentation, I will illustrate how high-energy astrophysics observations of galactic and extragalactic sources can be exploited to look for specific imprints of the ALPs-photon coupling, over a broad range of wavelengths, from radio to high-energy gamma rays. I will review current constraints on the ALPs parameter space, and provide an outlook on future experiments’ sensitivity to ALPs discovery.
Finally, I will present how we can constrain also other feebly interacting particles with high-energy astrophysics.
