  We present an analysis of 10 ks snapshot Chandra observations of 12 shocked
post-starburst galaxies, which provide a window into the unresolved question of
active galactic nuclei (AGN) activity in post-starburst galaxies and its role
in the transition of galaxies from actively star forming to quiescence. While
7/12 galaxies have statistically significant detections (with 2 more marginal
detections), the brightest only obtained 10 photons. Given the wide variety of
hardness ratios in this sample, we chose to pursue a forward modeling approach
to constrain the intrinsic luminosity and obscuration of these galaxies rather
than stacking. We constrain intrinsic luminosity of obscured power-laws based
on the total number of counts and spectral shape, itself mostly set by the
obscuration, with hardness ratios consistent with the data. We also tested
thermal models. While all the galaxies have power-law models consistent with
their observations, a third of the galaxies are better fit as an obscured
power-law and another third are better fit as thermal emission. If these
post-starburst galaxies, early in their transition, contain AGN, then these are
mostly confined to a lower obscuration ($n_H \leq10^{23}$ cm$^{-2}$) and lower
luminosity ($L_{2-10~ \rm keV}\leq10^{42}$erg s$^{-1}$). Two galaxies, however,
are clearly best fit as significantly obscured AGN. At least half of this
sample show evidence of at least low luminosity AGN activity, though none could
radiatively drive out the remaining molecular gas reservoirs. Therefore, these
AGN are more likely along for the ride, having been fed gas by the same
processes driving the transition.
