That you Sir. The reasoning (from the reference posted earlier) did sound as if only one detector was being considered. I didn't read the reference because I couldn't get past the 2nd sentence of the second para. I'm looking for possible glitches (and not finding any as of yet), AND the potential compatibility such a cosmically induced signal might have with other theories. Conspiracy ideas ("lie") aren't getting the time of day.querious wrote: Solar,
The screed by Mathis doesn't mention the delay, or the fact of 2 identical, info rich signals, because, as usual, he's is so utterly clueless about what he's talking about. Even tho he shows the graphs side-by-side, he keeps talking about a single interferometer, and I can't see where he's even aware there were 2 of them! I read his "article" for entertainment value, but it's abundantly clear he doesn't understand the experiment at all.
However, my favorite line of all was this...
They can't do real physics, so the only thing left is this highly promoted pretend physics.
The irony is just too much!
*All one needs to consider is the pertinent and salient fact that something (a Force) triggered the detectors at both independent LIGO locations.
The amplitude between the two signals show definite sings of decay just as a propagating wave might show while traversing a given distance between two locations given two detectors at said locations. Anyways: here is the latest from Nature briefly covering "blind injections", the fact that there are two separate independently functioning detectors and the 203,000 year odds that such a signal might have been a false alarm:
After a long day of calls and e-mails, she determined that no blind injection had occurred and told the entire collaboration.
González and her team decided to take data for another month before beginning a full analysis: the researchers needed to record the natural noise present in their detectors to have something to compare with the chirp. They concluded that the odds of noise producing that loud pattern — and the very same pattern in both Louisiana and Washington at about the same time — were so low that it should only occur by chance less than once every 203,000 years.
Although the two black holes had probably been orbiting each other for millions of years, LIGO began to pick up their waves only when they reached a frequency of 35 cycles per second (hertz). The frequency rapidly increased to 250 hertz. The signal became chaotic and then rapidly died down; the whole thing was over within a quarter of a second. Crucially, both detectors saw it at roughly the same time — Livingston, in Louisiana, first and Hanford, in Washington, 7 milli¬seconds later. The delay is an indication of how the waves swept through Earth. - Nature:Gravitational waves: How LIGO forged the path to victory
A propagating wave better explains the differences in amplitudes for two different locations several miles apart. I'd be amazed if it were a "discrepancy".Pi sees wrote: The two arrays would have had to have been set up and modified as similarly as possible. This would explain the 7 millisecond discrepancy.