Orateur
Lorenzo Ubaldi
(University of California, Santa Cruz)
Description
Active Galactic Nuclei (AGN) are believed to reside in the center of massive dark matter (DM) halos. The energetic electrons and protons in AGN jets crossing regions of high DM density can scatter off the DM particles, producing gamma rays in the final state. If the DM is a weakly interacting massive particle (WIMP), its mass is such that the final state gamma-ray emission will be almost isotropic, unlike the collimated flux produced in standard processes of ambient photons up-scattering. For AGN jets pointing significantly off the line of sight, one might expect to detect the gamma-ray flux produced in DM-electron or DM-proton interactions and to disentangle it from the standard AGN off-axis gamma-ray emission, as well as from the gamma rays produced by DM pair annihilation. We study in detail processes involving electron-DM and proton-DM scattering with photons in the final state, in the context of supersymmetry and of universal extra dimensions. We then investigate if the spectral features can be detected by FERMI.
Auteur principal
Lorenzo Ubaldi
(University of California, Santa Cruz)
Co-auteurs
Mikhail Gorshteyn
(Indiana University, Bloomington)
Stefano Profumo
(University of California, Santa Cruz)
