Speaker
Theodoros Papanikolaou
(National Observatory of Athens)
Description
Primordial black holes (PBH) can account for a wide variety of cosmic conundra, among which the origin of the primordial magnetic fields threading the intergalactic medium. In this talk, by considering PBHs naturally furnished with a disk due to the vortexlike motion of the primordial plasma around them, we will propose a novel natural ab initio mechanism for the generation a battery induced seed magnetic field (MF) which can be later amplified by various dynamo/instability processes and provide the seed for the present day MF on intergalactic scales. Finally, we will derive the GW signal induced by the magnetic anisotropic stress of such a population of magnetised PBHs checking at the end their detectability by GW observational probes.
Primary author
Theodoros Papanikolaou
(National Observatory of Athens)
