As a consequence gravity anomalies on earth and other planets are explained (see images).
Even the Saturn ring anomalies are assumed to be created by such hidden black hole alignment inside the planet.
So we may expect that also the sun has such gravity lensing (lighthouse) effects in space striking the earth and even incidentally the two and recently three (Pisa) LIGO locations.
The LIGO former measurements should be controlled at those pensil shaped gravity incidents.
"The team, led by Andrew Jackson, a physicist at the Niels Bohr Institute in Copenhagen, claims that the troublesome signal could be significant enough to call the entire discovery into question. The potential effects of the unexplained correlations “could range from a minor modification of the extracted wave form to a total rejection of LIGO’s claimed [gravitational wave] discovery,” However,: "LIGO representatives say there may well be some unexplained correlations, but that they should not affect the team’s conclusions."
Not only the sunspots black holes could produce pencil shaped gravity lensing but even dense star clusters black holes, which can be lined up two by two in our direction.
Are dense star clusters the origin of the gravitational waves discovered by LIGO?
Below: Solar gravity interference or "lighthouse effect" striking the earth and LIGO.