Title - Modeling the Fermi Bubbles and Galactic Haze
Abstract -
We measure the spectrum of the Fermi bubble (FB) edges without the use of template reduction.
The edge spectrum exhibits a tilt compared to the bulk of the FBs, which we argue results from the diffusion of cosmic rays away from the edges and into the bubbles.
We also show that the FB edges can be observed not only in gamma-rays but in radio and X-rays as well.
Using these multi-messenger observations we identify the FB edges as a forward shock.
We then construct a self consistent model for the FBs that puts tight constraints on the bubbles' age and magnetic field and provides a lower bound on the interstellar radiation field in the region.
We also show that the electrons and ions within the FBs are unlikely to be in thermal equilibrium.