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The Gravitational Wave (GW) events GW150914, GW151226, GW170104 detected byLIGO were a record of Black Hole binary merging system (BH-BH) very probably innearly empty or a vacuum space; such a kind of events will be mostly with nobaryon mass (plasma or dense masses) and therefore mute or blind in anycorrelated gamma band. If the GWs events might be born inside a globularcluster, a star forming region or along a spiral AGN accretion disk theiradditional accreting mass may be the needed baryon load to explode and shine:in those dense places. BH BH collapse may also offer an optical X and gammaafterglow via their baryon lightening and photon tracks. Only very nearby (tensMpc) BH Neutron Star (NS) or NS NS cannibal merging might be guaranteed andassociated also with a desired, visible and correlated spherical NS explosion(kilonova one); they require much lower threshold or just nearer distances.Indeed such a very exceptional GW170817 GRB170817a event occurred last August2017; it took place and it was related to a very first NS NS collapse in a SNkilonova spherical explosion. The GRB170817a gamma, X, radio signature it wasexceptional in many features . Its unique values (softer, weaker, the most nearand long life one) made GRB170817a very possibly an off-axis jet detection.However there are solid arguments that suggest that such a GRB are not justblazing within a collimated beam jet but that they are also shining in a widerspread gamma equatorial disk blazing, orthogonal to the jet itself. In a fewwords we were observing the event not along its jet but mostly orthogonal toit. This GRB170817a geometry may better explain the otherwise unexpected beamedto us event. In this paper therefore we summarize the astrophysical and thecosmological signature of such a long desired multiple astronomy.

May GWs signals by BH BH merging be associated with any gamma or neutrino burst? The case of a NS NS merging in GW GRB170817A