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The recent hypothesis of a giant supercluster binary-like structure formed bythe Corona Borealis and its close companion Abell 2142 (supercluster) belongsto a little known area of investigation as the dynamics of gravitationallyinteracting galaxy supercluster pairs. From the observational point of viewthis structure approximates the configuration of a binary-like system in linearorbit interconnected by a huge filamentary structure which, if confirmed, itwould be the first case to date observed at z > 0.07. Given the importance todisentangle this issue, a follow-up analysis has been performed on the regionconstrained by the common envelop of the two superclusters in order to searchfor new hints to confirm their mutual gravitational interaction. Observationalsignatures of that interaction have been found mapping the inner peculiarmotions where the observed negative peculiar velocities measured within theA2142 (supercluster) region suggest a general matter flow toward the CoronaBorealis supercluster. Besides, analyzing the effects on both superclusters dueto the mutual impact of the external tidal forces, turns out that their innerdynamics remain unperturbed up to the turnaround radii. Outside, where thebinding forces are overlapped by the tidal ones, the outskirts of bothsuperclusters should be unstable and subject to fragmentation. Such a scenarioindicates that both superclusters interact with comparable and reciprocal tidalperturbations leaving the whole system in a substantial dynamical equilibrium.The origin of such a dynamical dichotomy would be explained either by a muchmore massive Corona Borealis supercluster than that estimated in the presentwork or by a selection effect biasing the small sample of peculiar velocitiesdue to the remoteness of the system worsened by the large uncertainty on theirmeasurements.

On the giant supercluster binary-like system formed by the Corona Borealis and Abell 2142