Mark Ferguson wrote...
> Let that sink in for a moment. The EM interaction is as much stronger than the gravitational interaction is, as the Universe is as much bigger than a quark is.
>So to get gravitational waves you can measure *at all* you need ridiculously large amounts of matter (like neutron stars) moving ridiculously quickly (falling together at relativistic velocities in their mutual ridiculously strong gravitational fields just before colliding).
>Anything less is just not strong enough to cause the mirrors in an interferometer to move detectably.
Odd about Herb being considered abusive. The last person I would have called abusive.
Is that why Sam doesnt post any more? Has someone complained I wonder. I didnt agree with
anything he posted but he didnt deserve to be censored if thats what happens now.
(I post through google groups but dont get the choice to censor?)
Regarding your points on gravitational waves. Ive read as much as is available
on LIGO on template matching and various papers and it seems that what happens
is this: Each detector gets billions of chirp like signals. Some too faint are filtered out
as noise. Still leaving millions if not billions of candidate signals. Computor
analysis of data then matches each incoming chirp to various types of possible
black hole merger signatures in each detector seperately. It then matches each
candidate from each detector to any candidate chirp detected at the other detector
within the neccesary time frame dictated by assumed speed of gravity (essentially
ignoring any matches that are too far apart temporally to be consistent
with a relativistic gravity speed , and ignoring any chirp that does match a
relativistic BH merging profile but not the specific profile seen in the other detector)
This reduces a huge amount of candidate detections in each detector to a handful
that exactly match the profile of one detected in the other detector in a given time
frame of microseconds. And the match is then assumed to be a gravitational wave.
What the theorists dont like to admit is that in fact there are millions of detections
in each seperate detector that look like *and fit* the predicted relativistic merger
profile of a range of merging BH possibilities. But because of the temporal
restriction coupled with the need to match only identical profiles in each detector
these millions are wittled down to just three so far.
The only conclusion one can reach is that no merging holes are being detected.
Rather, it is that various random non relativistic sources are being detected and
sophisticated software is being used to match billions of "candidate" detections
from each detector to a detection in the other detector that just * happens* by
chance to match profiles in a given time frame. More importantly it shows
how false the claim is that only three detections in each detector look
like a gravitational wave BH source. In fact millions of detections look
like the predicted relativustic chirp. Its just that because predicted BH mergers
have a huge range of possible profiles only a couple with identical
profiles happen in the same narrow time frame.
So for instance if gravity had a slower predicted speed. More gravitational
waves could be detected from the same data. And conversely, with a
newtonian restriction of an infinite speed ...so far no matches can meet
these strict requirements. And when one does, the relativists can just say
that the source was exactly the same distance from each detector!