Has LIGO Just Detected The ‘Trifecta’ Signal That All Astronomers Have Been Hoping For?
“Of course, all of this is just preliminary at this point. The LIGO collaboration has yet to announce a definitive detection of any type, and the IceCube event may turn out to be either a foreground, unrelated neutrino or a spurious event entirely. No electromagnetic signal has been announced, and there might not be one at all. Science moves slowly and carefully, as it should, and all of what’s been written here is a best-case scenario for the optimistic hopefuls out there, not a slam-dunk by any means.
But if we keep watching the sky in these three fundamentally different ways, and keep increasing and improving the precision at which we do so, it’s only a matter of time before the right natural event gives us the signal every astronomer has been waiting for. Just a generation ago, multi-messenger astronomy was nothing but a dream. Today, it’s not just the future of astronomy, but the present as well. There’s no moment in science quite as exciting as being on the cusp of an unprecedented breakthrough.”
There haven’t been any official releases, announcements, or claimed discoveries, but many of you may be aware that back in April, LIGO turned on again and began searching the Universe for gravitational waves, this time with improved range and sensitivity. Over that time, some 24 candidate events have been seen, and the most recent one, from July 28, 2019, is perhaps something special. Located 2.9 billion light years away and likely to be a black hole-black hole merger, it just happens to coincide with the arrival of a cosmic neutrino, in both space and time, as seen by IceCube.
Electromagnetic follow-ups are currently underway, and this could mark the first threefold multi-messenger astronomy signal ever! Watch this one closely, as it could herald a new dawn for astronomy in human history!