IceCube Neutrinos Point to Long-Sought Cosmic Ray Accelerator | Research Horizons

Mindy Sparks
July 16, 2018

But, now, the IceCube team has seen it - and they can prove it happened. Credit: Ben Shappee/IfA The ASAS-SN telescope on Haleakala. The researchers hope to be able to look even better into the universe's past through the lens of such events.

The findings solve a mystery dating to 1912 over the source of subatomic particles like neutrinos and cosmic rays.

For the first time, researchers have established a deep space source for these omnivorous sub-particle particles.Success in the study of ground particles is called high energy neutrino which crosses the space, without making any tangle through people, planets and whole galaxies, scientists have a odd new way of expanding our understanding of the universe. sending out.On Thursday the researchers said that for the first time they are located a deep space source for these ubiquitous sub-particle particles.

It all starts with IceCube, a highly sensitive detector buried about two kilometres beneath the Antarctic ice, near the Amundsen-Scott South Pole Station. It is the only all-sky, real-time variability survey in existence.

"This whole project is an interesting mix of scientists whose work together began through things like the IceCube Alerts and Astronomer's Telegrams, and progressed to an impressive collaboration of facilities working together on one paper", said Sivakoff. Neutrinos interact very weakly with other matters. Theory predicts neutrino emission will be accompanied by gamma radiation, but many questions remain about how blazars are able to boost such particles to such extreme energies.


The particle was discovered by researchers with the help of telescopes and it is of great importance in the scientific world, as this is the first time when a high-energy neutrino has been followed on the way back to its origin, a great distance from our solar system. Two gamma-ray observatories, NASA's orbiting Fermi Gamma-ray Space Telescope and the Major Atmospheric Gamma Imaging Cherenkov Telescope, or MAGIC, in the Canary Islands, detected a flare of high-energy gamma rays associated with TXS 0506+056, a convergence of observations that convincingly implicated the blazar as the most likely source. Where do they come from? "It's a giant elliptical galaxy with a massive spinning black hole at its core and twin jets of light and high-velocity particles, one of which is aligned towards Earth". This means that these particles pass right through thousands of planets, stars, and even humans at almost the speed of light. Such galaxies are called blazars, although the term only applies when one of these streams is directed straight at Earth. This specific type of quasar is called a blazar.

For centuries we've been known that peeping through the universe is cosmic rays; originates far beyond our Galaxy.

The neutrino's ability to travel without deviation from its course means its source can be accurately tracked, unlike other types of subatomic particles that can be dragged off course by a magnetic field like the Earth's.

An artist's conception, based on a real image of the IceCube Lab at the South Pole, a distant source emits neutrinos that are detected below the ice by IceCube sensors.

When a neutrino interacts with the nucleus of an atom, it creates a secondary charged particle, which produces a cone of blue light that can be detected. While a single detection is not strong evidence, the IceCube scientists went back through their records and found a flurry of neutrinos coming from the same spot over 150 days in 2014 and 2015. It is designated by astronomers as TXS 0506+056. These observations are hard, because the blazar jet is much brighter than the host galaxy. And a Duke researcher not involved with the study tells Space.com that these "weird particles may hold the key to some of the biggest mysteries about the universe", adding, "We have to understand them if we want to understand everything".

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