Speaker
Francesco Schiavone
(Università degli Studi di Bari (UNIBA))
Description
We consider the axion flux emitted as Hawking radiation by primordial black holes (PBHs). If these axions are coupled with photons, they can convert into these particles in the cosmic magnetic fields. We explore the possible consequences of this mechanism on the cosmic X-ray background (CXB), the soft X-ray excess from galaxy clusters, and the reionization history of the Universe. We also briefly discuss the possibility of direct detection of this axionic radiation by Earth-based experiments such as IAXO.
Authors
Alessandro Mirizzi
Prof.
Daniele Montanino
(Università del Salento)
Francesco Schiavone
(Università degli Studi di Bari (UNIBA))
