On the giant supercluster binary-like system formed by the Corona
  Borealis and Abell 2142
  The recent hypothesis of a giant supercluster binary-like structure formed by
the Corona Borealis and its close companion Abell 2142 (supercluster) belongs
to a little known area of investigation as the dynamics of gravitationally
interacting galaxy supercluster pairs. From the observational point of view
this structure approximates the configuration of a binary-like system in linear
orbit interconnected by a huge filamentary structure which, if confirmed, it
would be the first case to date observed at z > 0.07. Given the importance to
disentangle this issue, a follow-up analysis has been performed on the region
constrained by the common envelop of the two superclusters in order to search
for new hints to confirm their mutual gravitational interaction. Observational
signatures of that interaction have been found mapping the inner peculiar
motions where the observed negative peculiar velocities measured within the
A2142 (supercluster) region suggest a general matter flow toward the Corona
Borealis supercluster. Besides, analyzing the effects on both superclusters due
to the mutual impact of the external tidal forces, turns out that their inner
dynamics remain unperturbed up to the turnaround radii. Outside, where the
binding forces are overlapped by the tidal ones, the outskirts of both
superclusters should be unstable and subject to fragmentation. Such a scenario
indicates that both superclusters interact with comparable and reciprocal tidal
perturbations leaving the whole system in a substantial dynamical equilibrium.
The origin of such a dynamical dichotomy would be explained either by a much
more massive Corona Borealis supercluster than that estimated in the present
work or by a selection effect biasing the small sample of peculiar velocities
due to the remoteness of the system worsened by the large uncertainty on their
measurements.
