Ghost particle, black hole

The results of a detailed study by Science magazine mark the first source of such particles.

For the first time in history, scientists have discovered a source of high-energy ghost particles called neutrinos, which have gone through 3.7 billion years to reach the Earth at almost the speed of light. Using NASA’s Fermi Gamma Ray Space Telescope, the scientists explored the path of this hard-to-capture particle and detected gamma rays from distant supermassive black holes in the Orion constellation. Scientists believe that high-energy neutrinos are produced by the most powerful events in the universe, such as the merger of galaxies and substances that fall on super massive black holes. They travel at speeds below the speed of light and rarely interact with other substances, allowing them to travel unimpeded for billions of light years. The results of a detailed study by Science magazine mark the first source of such particles.

Paul Hertz, director of the Department of Astrophysics at NASA Headquarters in Washington, said: “Finally, Fermi has helped us achieve another huge leap in an ever-evolving field, which we call multipurpose astronomy.” “The neutrino and gravitational waves provide relevant new information about the most extreme environments in the universe. But in order to best understand what they tell us, we need to relate them to the “messengers” that astronomers know best – “Hertz added. The neutrino was discovered last year in Antarctica by an international team of scientists using the National Science Foundation’s Ice Cube Neutrino Observatory. It hits the Antarctic ice with about 300 trillion electron volts of energy – more than 45 times the energy of the most powerful particle accelerator on Earth. This high energy strongly suggests that neutrinos must come from outside our solar system. The Ice Cube backtracking path indicates the location of the neutrino from the sky and informs global astronomers in the area to search for automatic alerts of flares or outbreaks that may be associated with the event.

Data from Fermi show that gamma rays from well-known active galaxies are enhanced when neutrinos arrive. This is an active galaxy known as blazer, with super massive black holes in the quantities of millions to billions of solar masses that eject jets of particles in opposite directions at near-speed of light. Blazars are particularly bright and active, as one of these jets points almost directly to the Earth. NASA said that Fermi scientist Yasuyuki Tanaka of Hiroshima University in Japan was the first to link a neutrino event to a blazar designated TXS 0506 + 056 (TXS 0506).

“The most extreme cosmic explosions produce gravitational waves, and the most extreme cosmic accelerators produce high-energy neutrinos and cosmic rays,” said Regina Caputo of NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “Through Fermi, gamma rays provide a bridge for these new cosmic signals,” Caputo said.


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