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The first confirmed neutron star fusion produced a jet of star material that Earth researchers can see with visible light. This contradicts earlier predictions that the merger would instead create a wide-angle light stream. ( Mark Garlick / University of Warwick )
Contrary to what most experts believe, colliding neutron stars produce a jet of matter that flows from melting to ultra-high speeds.
more than a hundred days after the release of the merged object from hiding behind the sun.
Early models predicted that the fusion of two neutron stars would produce a wide range of neutron stars. cocoon of star matter around the resulting object. The latest discoveries, however, overturn the prevailing theory about what happens as a result of a fusion of neutron stars
Jet of Light merging with a fusion of Neutron Stars
A team of astrophysicists from the University of Warwick orbit the Hubble Space Telescope to detect a powerful beam of light from the fusion of neutron stars. The beam was slightly off-center but was directed towards the Earth.
The neutron star melter GW170817 was first detected by the gravitational wave laser (LIGO) observatory on August 17, 2017. It was spotted 130 million light. Earth's years in galaxy NGC 4993. This was the first fusion of neutron stars observed by humanity and the fifth known example of gravitational waves, a phenomenon predicted by Albert Einstein there has more than a century
. stained visible light caused by radioactive decay of heavy elements. Since then, however, the glow has faded away and has been replaced by a stream of material moving at a slight angle to the Earth at almost the speed of light.
"This is very different from what some people have suggested," says lead author and physicist Joe Lyman of the University of Warwick
.The researchers propose that neutron fusions create short bursts of gamma rays coming out in a jet that can only be seen on Earth when the flow of matter flows in that direction, but the experts rarely detect these planes because few of them are directed to Earth.
"If we had looked directly at this beam, we would have seen a truly powerful explosion of gamma rays," says Andrew Levan, another senior author also of the University of Warwick. [19659003] Details of the study can be seen in an article published in the journal Nature Astronomy .
Previous predictions
Scientists study GW170817 have detected gravitational waves out of e the fusion of the two neutron stars. Twelve hours later, they saw a bright light signal, supposed to be a stellar material ejected from fusion at half the speed of light. Experts say the radioactive decay of heavy elements has caused a glow that could be seen from the Earth.
The merger continued to emit electromagnetic signals weeks after the event. Using the Karl G. Jansky Very Large Array (VLA) telescope in New Mexico, researchers confirmed the existence of radio waves, the nature of which allowed them to predict the events that followed the merger.
on themselves to form a body that is most likely a black hole. This super dense body is small enough, never bigger than a city on Earth, but it is filled with mass and energy that is several times that of the sun.
As the black hole rotates, its strong gravitational pull sucks in the surrounding material. This movement forms a rapidly spinning disc that ejects two streams of star matter from its poles.
Scientists previously believed that when radio signals become stronger, material jets lose the ability to exit the debris sphere. surrounding the merger. Previous observations showed increasing radio emissions, leading experts to believe that high-speed jets formed a bright cocoon around fusion.
Rad
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