A New Mask for An Old Suspect: Testing the Sensitivity of the Galactic
  Center Excess to the Point Source Mask
  The Fermi-LAT collaboration has recently released a new point source catalog,
referred to as 4FGL. For the first time, we perform a template fit using
information from this new catalog and find that the Galactic center excess is
still present. On the other hand, we find that a wavelet-based search for point
sources is highly sensitive to the use of the 4FGL catalog: no excess of bright
regions on small angular scales is apparent when we mask out 4FGL point
sources. We postulate that the 4FGL catalog contains the large majority of
bright point sources that have previously been suggested to account for the
excess in gamma rays detected at the Galactic center in Fermi-LAT data.
Furthermore, after identifying which bright sources have no known counterpart,
we place constraints on the luminosity function necessary for point sources to
explain the smooth emission seen in the template fit.
