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The exciting development of gravitational wave (GW) astronomy in thecorrelation of LIGO and VIRGO detection of GW signals makes possible to expectregistration of effects of not only Binary Black Hole (BH) coalescence, butalso Binary Neutron Star (NS) merging accompanied by electromagnetic (GRB)signal. Here we consider the possibility that a Neutron Star (NS), merging in aNS-NS or NS-BH system might be (soon) observed in correlation with anyLIGO-VIRGO Gravitational Waves detection. We analyze as an example the recentcase of the short GRB 170817A observed by Fermi and Integral. The associatedOptical transient OT source in NGC4993 imply a rare near source, a consequentaveraged large rate of such events (almost) compatible with expected NS NSmerging rate. However the expected beamed GRB (or Short GRB) may be mostlyaligned to a different direction than our. Therefore even soft GRB photons,more spread than hard ones, might be hardly able to shower to us. Neverthelessa prompt spiraling electron turbine jet in largest magnetic fields, at the baseof the NS-NS collapse, might shine by its tangential synchrotron radiation inspread way with its skimming photons shining in large open disk. The consequentsolid angle for such soft disk gamma radiation may be large enough to benevertheless often observed.

Could GRB170817A be really correlated to a NS-NS merging?