Speaker
Description
Astrophysical jets of powerful active galactic nuclei (AGN) have been recently put forward as promising probes of dark matter (DM) at the sub-GeV-mass scale. AGN launch relativistic jets that accelerate cosmic rays (CRs) to energies beyond the PeV scale. These CRs may interact with their surroundings, producing multiwavelength (MW) emission from radio to TeV γ rays. If DM consists of light particles, CR-DM interactions—whether elastic or inelastic—could lead to additional secondary particles, modifying the expected MW emission. Previous studies have neglected uncertainties in astrophysical jet dynamics when constraining CR-DM interaction cross-section for boosted DM. In this work, we develop a novel statistical framework to assess the impact of jet kinematics on DM constraints. Using a multizone jet model for Markarian 421, a well-studied AGN, we investigate the DM-induced radiative signatures. Our results offer new insights into the role of relativistic jets in
unveiling the nature of DM.
