An Anisotropic Model for Galactic Cosmic Ray Transport

The exploration of cosmic rays, initiated by Victor Hess in 1912, has evolved significantly, integrating insights from astrophysics, cosmology, and particle physics. Recent data from the ROSAT satellite reveal that the Milky Way generates substantial Galactic winds, challenging traditional isotropic diffusion models. This work introduces an anisotropic transport model that accommodates these wind velocities while adhering to constraints from cosmic rays and gamma rays. The model predicts a notable bulge over disk ratio in the positron annihilation signal, aligning with INTEGRAL observations and offering implications for dark matter research.