What the Space most elusive particles can tell us about the universe’s - Physics-Astronomy.org

What the Space most elusive particles can tell us about the universe’s

In 2012, a tiny flash of light was detected deep beneath the Antarctic ice. A burst of neutrinos was responsible, and the flash of light was their calling card.
It may not sound important, but the flash could give us tantalising insights into one of the the majority energetic objects in the distant universe.
The light was triggered by the universe’s most elusive particles when they made contact with a extraordinary detector, appropriately called IceCube, which was built for the very purpose of capturing rare events such as this.
The team of global researchers now think the event may have originated from a quasar, which is the active nucleus of a galaxy billions of light-years away.

The flash also potentially opens up a new era of neutrino astrophysics and may help unravel the mystery of neutrino production in the space.
The antisocial particle that came in from the cold
Neutrinos are elementary particles and one of the minimum building blocks of the space. Despite being one of the most abundant and energetic particles, neutrinos have a reputation of being notoriously hard to detect.
This is because they very rarely interact with normal matter. In fact, billions of them pass through your body every minute without even causing a tickle.
So how do you find such an antisocial particle?
It might not look it from the frosty surface of Antarctica, but Ice Cube is one of the world’s biggest telescopes, and the largest for detecting neutrinos.
IceCube occupies a cubic kilometre of clear ice, which provides the best medium for thousands of sensors to capture that elusive burst of light created when a high energy neutrino collides with an ice particle.
Although the probability of a collision is minuscule, there are so many neutrinos that go by through the detector that eventually some will interact with the ice.
The trick then is to determine where the neutrinos originated. Neutrinos are produced by the nuclear reactions going on at the centre of stars and in other highly energetic cosmic processes.
So when trying to find origin of the 2012 neutrino burst, Professor Sergei Gulyaev, the director of Auckland University of Technology’s Institute for Radio Astronomy and Space  Astronmers  told The Conversation that there was no shortage of candidates. The sky was literally the limit.
“Out of millions of astronomical objects, which one was responsible?”

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