Speaker
Dr
Daniele Montanino
(University of Salento & INFN, Lecce)
Description
Large-scale extragalactic magnetic fields may induce conversions between very-high-energy photons and axion-like particles (ALPs), thereby shielding the photons from absorption on the extragalactic background light. We consider realistic models of extragalactic magnetic fields obtained from large-scale cosmological simulations. Such simulated magnetic fields would have large enhancement in the filaments of matter. As a result, photon-ALP conversions would produce a significant spectral hardening for cosmic TeV photons respect to the simplified "cell" models previously considered in literature.
Primary author
Dr
Daniele Montanino
(University of Salento & INFN, Lecce)
Co-authors
Dr
Mirizzi Alessandro
(University of Bari & INFN, Bari)
Dr
Vazza Franco
(INAF - Istituto di Radio Astronomia di Bologna)
Dr
Viel Matteo
(SISSA-International School for Advanced Studies)
