Gravitational waves don't exist - LIGO godfathers FAKE them. In the black-hole-collision scenario the fraud is difficult, even impossible to expose, for obvious reasons. However in the neutron-star-collision scenario the fraud is obvious:

"On 8:41 am EDT August 17, 2017, LIGO detected a new gravitational wave source, dubbed GW170817 to mark its discovery date. Just two seconds later NASA's Fermi satellite detected a weak pulse of gamma rays from the same location of the sky." https://www.cfa.harvard.edu/news/2017-30

"The same location" is impossible. Gamma rays undergo gravitational deflection - "the same location" implies that gravitational waves are deflected in exactly the same way, which is nonsense. LIGO godfathers were quite careless here.

The simultaneous arrival is another carelessness. Even if gravitational waves existed (they don't), the simultaneous arrival of optical signals and gravitational waves would be impossible, for the following two reasons:

1. That gravitational waves travel at the speed of light was Eddington's 1922 fabrication - nothing to do with Einstein's general relativity:

Arthur Eddington 1922: "The problem of the propagation of disturbances of the gravitational field was investigated by Einstein in 1916, and again in 1918. It has usually been inferred from his discussion that a change in the distribution of matter produces gravitational effects which are propagated with the speed of light; but I think that Einstein really left the question of the speed of propagation rather indefinite. His analysis shows how the co-ordinates must be chosen if it is desired to represent the gravitational potentials as propagated with the speed of light; but there is nothing to indicate that the speed of light appears in the problem, except as the result of this arbitrary choice. [...] Weyl has classified plane gravitational waves into three types, viz.: (1) longitudinal-longitudinal; (2)longitudinal-transverse; (3) transverse-transverse. The present investigation leads to the conclusion that transverse-transverse waves are propagated with the speed of light in all systems of co-ordinates. Waves of the first and second types have no fixed velocity - a result which rouses suspicion as to their objective existence." http://rspa.royalsocietypublishing.o...6/268.full.pdf

2. The simultaneous arrival of optical signals and gravitational waves presupposes that the gravitational waves experience Shapiro delay, like optical signals, which is nonsense of course.

Conclusion: LIGO godfathers FAKED the gravitational waves in the GW170817 (neutron-star-collision) scenario.

Pentcho Valev