Second Gravitational Wave Makes It Official: Merging Black Holes Don't Burst!
Yesterday, the LIGO collaboration announced the detection of a pair of merging black holes, a 14 solar mass black hole inspiraling and coalescing with an 8 solar mass black hole, only the second gravitational wave event ever seen. While some controversial evidence existed that the first black hole-black hole merger produced a gamma-ray burst, those results were hotly disputed, with advocates on both sides eagerly awaiting the results from the second merger. With the announcement yesterday, it became official: neither gamma-rays nor X-rays were seen, tipping the scales towards the long-awaited conclusion, merging black holes do not produce bursts of radiation.
(FORBES.COM)
NASA detected GRB
NASA’s Fermi Gamma-ray Space Telescope detected the very weak and brief burst of high-energy X-rays, consistent with a short gamma-ray burst (or GRB), less than half a second after LIGO registered GW150914. This is surprising — it was assumed that when black holes collide, they do so “cleanly,” according to a NASA news release, not producing any kind of electromagnetic trace. So are the two signals related to the same event? The timing makes it highly likely; there’s only a 0.2 percent chance that they occurred in the same patch of sky at the same time but belonged to two different high-energy phenomena.
“This is a tantalizing discovery with a low chance of being a false alarm, but before we can start rewriting the textbooks we’ll need to see more bursts associated with gravitational waves from black hole mergers,” said Valerie Connaughton, member of the Gamma-ray Burst Monitor (GBM) team at the National Space, Science and Technology Center in Huntsville, Ala.
The majority of GRBs are believed to be created when massive stars implode after running out of fuel and then explode, forming black holes in their wake. These are known as “long GRBs.” The intense radiation — detected as a flash of gamma-rays and high-energy X-rays — originates from dying stars’ poles at the time of explosion. There is, however, a more mysterious type of GRB that is short period (less than 2 seconds) and possibly linked with black hole and neutron star mergers.
“With just one joint event, gamma rays and gravitational waves together will tell us exactly what causes a short GRB,” said Lindy Blackburn, a postdoctoral fellow at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass., and a member of the LIGO Scientific Collaboration. “There is an incredible synergy between the two observations, with gamma rays revealing details about the source’s energetics and local environment and gravitational waves providing a unique probe of the dynamics leading up to the event.”
The gravitational wave signal was generated by the rapid spiraling and collision of two black holes, an event that created the now-famous black hole “chirp.” But if indeed this Fermi detection is also of the same event, astrophysicists will have to figure out how this is possible. Black hole mergers aren’t supposed to generate significant quantities of energy in the electromagnetic spectrum unless there’s a quantity of gas close to the merging region. But it is thought that the vast majority of any gases surrounding the black hole binary would have disappeared long ago.
“This is a tantalizing discovery with a low chance of being a false alarm, but before we can start rewriting the textbooks we’ll need to see more bursts associated with gravitational waves from black hole mergers,” said Valerie Connaughton, member of the Gamma-ray Burst Monitor (GBM) team at the National Space, Science and Technology Center in Huntsville, Ala.
The majority of GRBs are believed to be created when massive stars implode after running out of fuel and then explode, forming black holes in their wake. These are known as “long GRBs.” The intense radiation — detected as a flash of gamma-rays and high-energy X-rays — originates from dying stars’ poles at the time of explosion. There is, however, a more mysterious type of GRB that is short period (less than 2 seconds) and possibly linked with black hole and neutron star mergers.
“With just one joint event, gamma rays and gravitational waves together will tell us exactly what causes a short GRB,” said Lindy Blackburn, a postdoctoral fellow at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass., and a member of the LIGO Scientific Collaboration. “There is an incredible synergy between the two observations, with gamma rays revealing details about the source’s energetics and local environment and gravitational waves providing a unique probe of the dynamics leading up to the event.”
The gravitational wave signal was generated by the rapid spiraling and collision of two black holes, an event that created the now-famous black hole “chirp.” But if indeed this Fermi detection is also of the same event, astrophysicists will have to figure out how this is possible. Black hole mergers aren’t supposed to generate significant quantities of energy in the electromagnetic spectrum unless there’s a quantity of gas close to the merging region. But it is thought that the vast majority of any gases surrounding the black hole binary would have disappeared long ago.
Sorry!
Now we know, no doubt: general relativity has been wrong since the beginning, so:
Now we know, no doubt: general relativity has been wrong since the beginning, so:
LIGO's merging black holes don't burst, sorry, just experiment is made based on belief. It is seem nothing more than a case of knowing the result they wanted to get, and in accordance with LIGO's expert that said before - in Feruary 2016 : " I am certain, Einstein has always been right."
Einstein never predicts black hole, moreover, gravitational wave come from black holes merger. He didn’t believe in black hole. Einstein is The Reluctant Father of Black Hole.
In Einstein’s manuscript 1916 :”Two celestial bodies in orbit will generate ripples in spacetime”.LIGO’s gravitational waves nothing to do with Einstein.
Two celestial bodies in orbit will generate ripples in space time yet to be proven.
What's wrong with general relativity?
Stop experiments based on belief and saying Einstein was right again. It was very embarrassing!
No doubt, general relativity has been wrong since the beginning.
