http://www.space.com/37049-gravitational-wave-experiment-detects-third-black-hole-merger.html?utm_source=notification
Looks like with the sensitivity as we have now produces a new detect about once every 3 months or so.
But sensitivity upgrades are in the works so smaller energetic events like 2 neutron stars colliding will be seen in a few years. And other detectors online simultaneously so direction to the events can be calculated. Right now they are detected at 1, 2 and 3 billion LY out.
But the energy of the two black hole mergers creates a burst of energy equal to the entire energy of the universe for that short period of time of the merger before it dies down. Even that amount of energy only creates a tiny amount of gravitational wave propagation though.
Originally posted by humyThey will get more information as to the direction of the source when they get more detectors online, due to the difference in timing of the pulses between two or three detectors.
Interesting.
Makes me seriously wonder what new discoveries this new science of detection could eventually lead to? Who knows.
Originally posted by ogbEinstein's theory of gravity has nothing to do with the Planck scale - in fact the theory breaks down at that scale. General relativity is formulated in terms of the stress-energy tensor (an object akin to a mass/energy density) and has no quantization of fields whatsoever.
Ok so Einstein was right again ( grav-waves).. which isn't very hard to predict if you believe in the Planck scale.
Originally posted by KazetNagorraYes.
Einstein's theory of gravity has nothing to do with the Planck scale -
relativity ≠ quantum physics
The first is the physics deduced from the principle that speed of c is the same in all frames of reference (general relativity comes from considering that principle for accelerating frames of reference)
The second is the physics deduced from observations indicating quantums of the very small (an odd-sounding way to word it but don't know how else to better say it)
-two very different physics.
Originally posted by ogbPretty much because if they are real, which is not assured, it is very very difficult to detect, much more difficult than neutrino's for instance. Pretty much by definition since none has been found to this date. But still, what would a graiviton have to do with plancks constant?
OK so why hasn't a Graviton particle been found ?
Originally posted by ogbWell you should write a paper extolling the virtues of looking directly for a gaviton.
Wasn't saying there is any connection, per se. But it would be important as to how Gravity works, in general. Since the Higgs Boson has been detected, CERN should be trying to detect the Graviton next.
Here is a bit about the big guys looking exactly for that:
http://blog.thingswedontknow.com/2016/08/search-for-the-graviton.html