  We study the correlation between a part of the gravitational field at the
common dynamical horizon in the strong field regime and the news of the
gravitational radiation received from the system in the weak field regime, in
the post-merger phase of quasi-circular, non-spinning binary black hole mergers
using numerical relativity simulations. We find that, as in the inspiral phase
Phys.Rev.Lett.125,121101, the shear of the common dynamical horizon formed late
into the inspiral continues to be well correlated with the news of the outgoing
gravitational radiation even at early times. We show by fitting that the shear
contains certain quasi-normal frequencies and information about the masses and
spins of the remnant and the parent black holes, providing evidence to support
the horizon correlation conjecture holds for dynamical horizons in binary black
hole mergers.
