|
#1
●
02-11-2016, 11:22 AM
|
|
Gravitational Waves Directly Detected
Rejoice All Ye Nerds, for Gravitational Waves Have Indeed Been Directly Detected Written by Becky Ferreira Contributor http://motherboard.vice.com/read/rej...ectly-detected February 11, 2016 // 10:50 AM EST The results are in, and the rumors are true. The Laser Interferometer Gravitational-Wave Observatory (LIGO), based jointly in Louisiana and Washington, has directly detected gravitational waves for the first time in history. We can now officially "hear" cosmic phenomenon such as colliding black holes, in the same way that telescopes have allowed us to see these spectacular events. Wild applause and fervent jubilation is recommended. “We have detected gravitational waves,” said David Reitze, LIGO’s laboratory executive director, during a packed press briefing this morning at 10:30 AM Eastern. “We did it.” Seriously, there is no understating the significance of this milestone for the scientific community. Gravitational waves, which are ripples in the very fabric of spacetime, are incredibly subtle and challenging to catch. Even Albert Einstein himself, who predicted the existence of these waves 100 years ago, was doubtful that such a seemingly insurmountable feat could ever be accomplished. Well, the folks at LIGO have proved him wrong about that by proving him right about the existence of gravitational waves. The waves that the observatory picked up were emitted by two black holes, each about 30 times the mass of the Sun, that collided some 1.3 billion years ago. Tribute to the detection. Video: National Science Foundation/YouTube Just like that, all of Einstein’s major predictions from his general theory of relativity have now been borne out by direct observational evidence. Now, cosmologists, astrophysicists, and all manner of other space-time experts can get down to the dirty work of figuring out where this entirely new dataset fits in to our growing understanding of our own outrageously bizarre universe. Welcome to the post-wave world, everybody. We’re looking forward to listening to more of this awesome cosmic dubstep with you in the future. http://youtube.com/B4XzLDM3Py8 |
|
#2
●
06-21-2016, 01:53 PM
|
|
Re: Gravitational Waves Directly Detected
http://www.space.com/33176-gravitati...collision.html a second detection means confirmation! Distortions in the fabric of space-time, which were predicted by Albert Einstein a century ago, have been directly detected for the second time. Approximately 1.4 billion light-years from Earth, two black holes spiraled around each other and collided, creating ripples in the fabric of space-time. These ripples, known as gravitational waves, arrived at Earth in December 2015, and were detected by the Laser Interferometer Gravitational Wave Observatory (LIGO). The LIGO collaboration announced the finding today (June 15) during a news conference at the 228th meeting of the American Astronomical Society (AAS) in San Diego. The gravitational wave signal — officially known as GW151226 — was detected by LIGO on Dec. 25, 2015, at 11: 38 p.m. EDT (0338 a.m. GMT on Dec. 26). [Again! Gravitational Waves Detected from 2nd Black Hole Collision] In the U.S., many of the LIGO scientists were still been celebrating Christmas Day when the news arrived, and it "destroyed a few family dinners," said Vicky Kalogera, an astrophysicist at Northwestern University and a member of the LIGO collaboration, in an interview with Space.com. LIGO made the first-ever direct detection of gravitational waves in September 2015, and team members announced that finding in February. That first gravitational wave signal was also created by two colliding black holes. "The second discovery means the first discovery was not a one-off, 'we got lucky,' kind of thing," David Reitze, current executive director of the LIGO Laboratory, told Space.com. "If I could encapsulate what the second discovery means … it's that LIGO is for real." LIGO scientists waited until now to announce the second detection because they had to make sure that it was real, and that it was caused by a black hole collision, team members said. |
|
#3
●
06-21-2016, 03:27 PM
|
|
Re: Gravitational Waves Directly Detected
http://www.space.com/33176-gravitati...collision.html a second detection means confirmation! Distortions in the fabric of space-time, which were predicted by Albert Einstein a century ago, have been directly detected for the second time. Approximately 1.4 billion light-years from Earth, two black holes spiraled around each other and collided, creating ripples in the fabric of space-time. These ripples, known as gravitational waves, arrived at Earth in December 2015, and were detected by the Laser Interferometer Gravitational Wave Observatory (LIGO). The LIGO collaboration announced the finding today (June 15) during a news conference at the 228th meeting of the American Astronomical Society (AAS) in San Diego. The gravitational wave signal — officially known as GW151226 — was detected by LIGO on Dec. 25, 2015, at 11: 38 p.m. EDT (0338 a.m. GMT on Dec. 26). [Again! Gravitational Waves Detected from 2nd Black Hole Collision] In the U.S., many of the LIGO scientists were still been celebrating Christmas Day when the news arrived, and it "destroyed a few family dinners," said Vicky Kalogera, an astrophysicist at Northwestern University and a member of the LIGO collaboration, in an interview with Space.com. LIGO made the first-ever direct detection of gravitational waves in September 2015, and team members announced that finding in February. That first gravitational wave signal was also created by two colliding black holes. "The second discovery means the first discovery was not a one-off, 'we got lucky,' kind of thing," David Reitze, current executive director of the LIGO Laboratory, told Space.com. "If I could encapsulate what the second discovery means … it's that LIGO is for real." LIGO scientists waited until now to announce the second detection because they had to make sure that it was real, and that it was caused by a black hole collision, team members said. |