(via Science Magazine article below) "“The things you calculate from Einstein’s theory look exactly like the signal,” he says. “To me, that’s a miracle.” "
[Theoretical physicist at Caltech]
Holy crap what a beautiful plot. I'm a bit verklempt. #LIGO
A comic and a video (in 6 languages)
(Link tweeted by @CNRS)
Ripples in space-time have been detected a century after Einstein predicted them: https://www.quantamagazine.org/20160211-gravitational-waves-discovered-at-long-last/ …
When the big signal arrived in September, scientists in Europe, where it was morning, frantically emailed their American colleagues. As the rest of the team awoke, the news quickly spread. According to Weiss, practically everyone was skeptical — especially when they saw the signal. It was such a textbook chirp that many suspected the data had been hacked.
(blind injection=mock test)
“Even the team that does the blind injections have not perfected their injections well enough not to leave behind lots of fingerprints,” Thorne said. “And there were no fingerprints.”
Einstein first thought that objects cannot shed energy in the form of gravitational radiation, then changed his mind. He showed in a seminal 1918 paper which ones could: Dumbbell-like systems that rotate about two axes at once, such as binary stars and supernovas popping like firecrackers, can make waves in space-time.
Judging by its shape and size, that first, loudest chirp originated 1.5 billion light-years away from the location where two black holes, each of roughly 30 solar masses, finally merged after slow-dancing under mutual gravitational attraction for eons. The black holes spiraled toward each other faster and faster as the end drew near, like water in a drain, shedding three suns’ worth of energy to gravitational waves in roughly the blink of an eye. The merger is the most energetic event ever detected.
animated gif: https://pbs.twimg.com/tweet_video/Ca82hdvWEAAbPSY.mp4
The rumors are true--gravitational waves have been detected for the very first time: http://scim.ag/1TUJxts
Science Magazine has quoted reader response to above tweet (in another tweet):
I understood some of these words. Luckily, someone spelled it out for me. @sciencemagazine
LIGO Scientific Collaboration (LSC) is comprised of >1000 people from >90 institutions & 15 countries worldwide pic.twitter.com/17rVKgBWm0