Tracing the Milky Way's Vestigial Nuclear Jet
  MeerKAT radio continuum and XMM-Newton X-ray images have recently revealed a
spectacular bipolar channel at the Galactic Center that spans several degrees
($\sim$0.5 kpc). An intermittent jet likely formed this channel and is
consistent with earlier evidence of a sustained, Seyfert-level outburst fueled
by black-hole accretion onto Sgr A$^*$ several Myr ago. Therefore, to trace a
now weak jet that perhaps penetrated, deflected, and percolated along multiple
paths through the interstellar medium, relevant interactions are identified and
quantified in archival X-ray images, Hubble Space Telescope Paschen $\alpha$
images and Atacama Large Millimeter/submillimeter Array millimeter-wave
spectra, and new SOAR telescope IR spectra. Hydrodynamical simulations are used
to show how a currently weak jet can explain these structures and inflate the
ROSAT/eROSITA X-ray and Fermi $\gamma$-ray bubbles that extend $\pm75\deg$ from
the Galactic plane. Thus, our Galactic outflow has features in common with
energetic, jet-driven structures in the prototypical Seyfert galaxy NGC 1068.
