The beginning of neutrino astronomy it should be: Antarctic station accurately tracked the birthplace of neutrino


2018-07-12 18:45:07




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The beginning of neutrino astronomy it should be: Antarctic station accurately tracked the birthplace of neutrino

The Scientists were able to trace the movements of the elusive particles up to her space of the Motherland, bright galaxies 4 billion light years. This is huge news: did this for the first time in the history of space exploration. Scientists have long puzzled over where high-energy cosmic particles that bombard the Earth with energy that is difficult to get even on the most powerful particle accelerators in the world. And so, physicists have identified the source of the energy lightweight particles called neutrinos. Intergalactic traveler came from bright galaxies — blazar — in the constellation of Orion, said the scientists in an article published in the July 12 Science.

"This is incredibly exciting news," said astrophysicist Angela Olinto Universiteta of Chicago, not related to the latest results. "This is the beginning of neutrino astronomy", which will use almost massless particles for disclosing the secrets of the cosmic quirks like blazers. Although sources of high-energy neutrinos may be a few, specifically this detection signals beserah.

This result also suggests that blazara emit other energy particles known as cosmic rays, which are born in tandem with the neutrino. The origin of high-energy cosmic rays is poorly understood, and still "no one has ever identified the source of their birth," says astrophysicist Francis Halzen from the University of Wisconsin-Madison, head of the IceCube neutrino Observatory in Antarctica, which detected a particle.

The IceCube, which was built in a cubic kilometer of ice, uses thousands of embedded sensors to measure light that is born when neutrinos crash into ice. 22 September 2017 registered IceCube neutrino with an energy of about 300 trillion electron volts. (For comparison, protons at the Large hadron Collider in Geneva reach an energy of 6.5 trillion electron volts).

Tracking the movement of the neutrino in the opposite direction, scientists have narrowed down the area of sky to the constellation of Orion. Then began astronomers and telescopes around the world began to sweep the spot of light, which could indicate the source of the particles. Cosmic gamma-ray telescope Fermi has detected a flash of gamma rays that came from the blazar TXS 0506+056, bright galaxy that feeds a huge black hole that produces a jet of energetic particles towards Earth. Different telescopes have observed the outburst of the blazar in other types of light, including x-rays and radio waves.

High-energy neutrinos with a clearly defined direction of the entrance — is a rarity. IceCube has sent a total of 10 reports of such detections for a year and a half before the discovery of this neutrino. For the first time, scientists were also lucky to find a light source.

"For this, in fact, and build IceCube — try to see high-energy neutrinos from these exotic sources," says neutrino physicist Kate Solberg from Duke University, was not involved in the research.


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