Photon-ALP oscillations inducing modifications to photon polarization

Axionlike particles (ALPs) are very light, neutral, spin zero bosons predicted by many theories which try to extend and complete the standard model of elementary particles. ALPs interact primarily with two photons can generate photon-ALP oscillations in presence an external magnetic field. They attracting increasing interest since produce deep consequences astrophysics particularly high-energy (VHE) band, where they increase transparency Universe VHE partially preventing absorption caused extragalactic background light. Furthermore, explain why coming from flat spectrum radio quasars (a particular class active galactic nuclei, AGN) have been observed for energies above 30 GeV---which represents a first hint existence ALP. In addition, solve anomalous redshift dependence blazar (an AGN class) spectra---which second this paper, we study another effect interaction; change polarization state photons. particular, propagation beam, starting produced---we consider generated galaxy cluster or jet blazar---crossing several magnetized media (blazar jet, host galaxy, cluster, space, Milky Way) up its arrival at Earth, be detected. interaction, analyze final photon survival probability ${P}_{\ensuremath{\gamma}\ensuremath{\rightarrow}\ensuremath{\gamma}}$ corresponding degree linear ${\mathrm{\ensuremath{\Pi}}}_{L}$ range $(1\ensuremath{-}{10}^{15})\text{ }\text{ }\mathrm{eV}$ dividing it into three energy bands: (i) UV-x-ray band (${10}^{\ensuremath{-}3}\text{ }\mathrm{keV}--{10}^{2}\text{ }\mathrm{keV}$), (ii) (HE) (${10}^{\ensuremath{-}1}\text{ }\mathrm{MeV}--{10}^{4}\text{ }\mathrm{MeV}$), (iii) (${10}^{\ensuremath{-}2}\text{ }\mathrm{TeV}--{10}^{3}\text{ }\mathrm{TeV}$). We observe that those photons, expected as unpolarized absence ALPs, made polarized generally modifies initial ${\mathrm{\ensuremath{\Pi}}}_{L,0}$ sizable measurable way. Our findings tested observatories like IXPE (already operative), proposed missions eXTP, XL-Calibur, NGXP XPP x-ray COSI (approved launch), e-ASTROGAM AMEGO HE range. A possible detection departure expectations would represent additional also discover peculiar feature $\ensuremath{\sim}(1--10)\text{ }\mathrm{TeV}$ fully because interaction. proof ALP, but, unfortunately, current technologies do not yet allow us detect such high energies.