Deep Space Invaders smash into Earth’s South Pole


Dozens traveled here at the speed of light to check out our snow slopes

By Shaun Nichols, 21st November 2013

neutrino_icecube_diagram.jpgScientists at the South Pole have detected a collection of neutrinos from outer space that could help explain the origins of the universe.

A team from the IceCube telescope laboratory in Antarctica will reveal their findings in tomorrow’s Science journal.

The experts believe that their 28 intergalactic subatomic particles, which were embedded within a cubic kilometre of polar ice, originated from outside the Solar System, and likely from outside our galaxy, the Milky Way.

No oxide, just neutrino … The particle-catching lab in Antarctica

Having collected the particles, the boffins believe that they can gain new insight into the workings of black holes, pulsars and other wonders of space that emit the subatomic particles.

Neutrino slide 10The equipment is able to differentiate between neutrinos from outside the Solar System with those that may have originated from the Sun or the Earth’s own atmosphere, which could reveal more about astrophysical phenomena billions of light-years from our home world. The extraterrestrial neutrinos screamed through the void at the speed of light before smashing themselves in the Earth’s snow.

“Neutrino observations are a unique probe of the universe’s highest-energy phenomena: Neutrinos are able to escape from dense astrophysical environments that photons cannot and are unambiguous tracers of cosmic ray acceleration,” wrote the team in their scientific paper.

neutrino lab 2.jpeg“As protons and nuclei are accelerated, they interact with gas and background light near the source to produce subatomic particles such as charged pions and kaons, which then decay, emitting neutrinos. We report on results of an all-sky search for these neutrinos at energies above 30 TeV in the cubic kilometer antarctic IceCube observatory between May 2010 and May 2012.”

The team, based out of the University of Wisconsin, said that the discovery of subatomic particles in ice has been in the making for more than a quarter century.

The discovery is only the second such observation of interstellar neutrinos by scientists. In 1987, a wave of particles from a supernova reached Earth and was observed by scientists. Since then, researchers have been looking for another source of the subatomic particles not generated by the Sun nor the Earth’s own atmosphere.

“This is the first indication of very high-energy neutrinos coming from outside our solar system, with energies more than one million times those observed in 1987 in connection with a supernova seen in the Large Magellanic Cloud,” said University of Wisconisn-Madison professor and IceCube principal investigator Francis Halzen.

“It is gratifying to finally see what we have been looking for. This is the dawn of a new age of astronomy.” ®

the-register

For more information:  theregister.co.uk/frozen_boffins_detect_intergalactic_particles

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