New York, Gatra.com A team of scientists has detected the presence of high-energy neutrinos. Neutrinos are particles that are very difficult to understand. These ghost particles are capable of penetrating planets or other celestial bodies. Sciencedaily, 25/02. Scientists discovered neutrinos after the destruction of a star that slipped and were ‘eaten’ by the black hole. This discovery, which is reported in the journal Nature Astronomy, sheds new light on the origins of Ultra High Energy Cosmic Rays – the highest energy particles in the universe. The work involved researchers from more than two dozen institutions, including the University of New York (NYU) and Germany’s DESY research center, focused on neutrinos – subatomic particles produced on Earth only by powerful accelerators. Neutrinos – as well as the process by which they are created – are difficult to detect, make their discoveries, together with Ultrahigh Energy Cosmic Rays (UHECRs), noteworthy. “The origin of the cosmic high-energy neutrinos is unknown, mainly because they are notoriously difficult to pin down,” explained Sjoert van Velzen, one of the paper’s lead authors and a postdoctoral fellow in the NYU Department of Physics at the time of the discovery. “This result will be the second time a high-energy neutrino has been traced back to the source.” Previous research by van Velzen, now at Leiden University in the Netherlands, and NYU physicist Glennys Farrar, co-author of the paper Nature Astronomy, found some of the earliest evidence of black holes destroying stars in what is now known as Tidal Disturbance (EFT). These findings set the stage for determining whether TDE can be responsible for producing UHECR. Research reported in Nature Astronomy offers support for this conclusion. Previous, IceCube Neutrino Observatory, detectors supported National Science Foundation located in Antarctica, the South Pole, reports detection of neutrinos, whose paths are then traced by Zwicky Transient Facility of Caltech’s Palomar Observatory. In particular, his measurements show the spatial coincidence of high-energy neutrinos and light emitted after EFT – a star consumed by a black hole. “This shows that this stellar destruction event is strong enough to accelerate high-energy particles,” explained van Velzen. “Finding the neutrinos associated with TDE is a breakthrough in understanding the origin of the high-energy astrophysical neutrinos identified by the detector. IceCube in the South Pole whose sources have been elusive so far, “added Farrar, who proposed in a 2009 paper that UHECR could be accelerated in TDE.” The coincidence of neutrinos-TDE also explains a decades-old problem: the origins of Ultra High Energy Cosmic Rays, ” After chewing the star, it appears that the black hole ‘burps.’ So that it emits ultra-high energy where the ghost particle’s neutrino hitches on to it and darts all over the universe. IceCube Neutrino Observatory managed to catch it to trace its origin.
Editor: Rohmat Haryadi
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