http://www.gizmodo.com.au/2016/04/black-hole-blues-gives-a-ringside-seat-to-discovery-of-gravitational-waves/
"You know, there's a small group of LIGO "truthers" out there, convinced it's all just one big conspiracy by fame-hungry scientists to hoodwink the public.
Janna Levin: No! Really? That's hysterical. This detection was much louder than anyone expected. LIGO heard it clear as day. If anything it's too clear.
So clear that the LIGO collaboration seriously considered the possibility that it was a malicious hack -- a fake injected signal.
Levin: Yes. Rai said, "Look, we went through every possible scenario for how you would inject a false signal, and tried to do it ourselves." There were only a few people in the entire collaboration with sufficient access and knowledge to do something like that, and they interrogated them all. And you have to physically attach stuff, you can't just do this telepathically, so they looked for little black boxes and things like that. It was like a C.S.I. experiment. So there's no physical evidence. It would be very hard to fake a signal without being caught. And I don't think anyone in the collaboration has that sophisticated a criminal mind. In fact, when they did a [deliberate] blind injection during the test run [of the earlier version of LIGO], they screwed it up a little. They got the orientation wrong." [end of quotation]
So in 2010 LIGO conspirators still did not have "that sophisticated a criminal mind" and "screwed it up a little" but then they improved and in 2015 everything was just fine:
http://www.thenational.ae/arts-life/the-review/why-albert-einstein-continues-to-make-waves-as-black-holes-collide#full
"Einstein believed in neither gravitational waves nor black holes. (...) Dr Natalia Kiriushcheva, a theoretical and computational physicist at the University of Western Ontario (UWO), Canada, says that while it was Einstein who initiated the gravitational waves theory in a paper in June 1916, it was an addendum to his theory of general relativity and by 1936, he had concluded that such things did not exist. Furthermore - as a paper published by Einstein in the Annals of Mathematics in October, 1939 made clear, he also rejected the possibility of black holes. (...) On September 16, 2010, a false signal - a so-called "blind injection" - was fed into both the Ligo and Virgo systems as part of an exercise to "test ... detection capabilities". At the time, the vast majority of the hundreds of scientists working on the equipment had no idea that they were being fed a dummy signal. The truth was not revealed until March the following year, by which time several papers about the supposed sensational discovery of gravitational waves were poised for publication. "While the scientists were disappointed that the discovery was not real, the success of the analysis was a compelling demonstration of the collaboration's readiness to detect gravitational waves," Ligo reported at the time. But take a look at the visualisation (
www.ligo.org/news/blind-injection.php) of the faked signal, says Dr Kiriushcheva, and compare it to the image apparently showing the collision of the twin black holes, seen on the second page of the recently-published discovery paper (
tinyurl.com/h3wkvmo). "They look very, very similar," she says. "It means that they knew exactly what they wanted to get and this is suspicious for us: when you know what you want to get from science, usually you can get it." The apparent similarity is more curious because the faked event purported to show not a collision between two black holes, but the gravitational waves created by a neutron star spiralling into a black hole. The signals appear so similar, in fact, that Dr Kiriushcheva questions whether the "true" signal might actually have been an echo of the fake, "stored in the computer system from when they turned off the equipment five years before"."
Pentcho Valev