Parity-Sensitive Cosmology II: Jet Axes as Proxies for Cosmic Spin Diagnostics

Relativistic jets from active galactic nuclei (AGN) and radio galaxies are among the most direct large-scale manifestations of black hole angular momentum. Jet orientation is typically assumed to trace the spin axis of the central black hole, yet cosmological surveys have never tested these directions for global isotropy or parity symmetry. Here, we extend the concept of parity-sensitive cosmology to jet axes, proposing that even incomplete spin vector information can be used to detect potential violations of large-scale symmetry.