Ghost Particle origin traced to distant black hole

Ghost Particle origin traced to distant black hole

IceCube has found far broader scientific uses than we could have originally imagined. The only visible equipment is the IceCube Lab, also called the ICL, which hosts the computers that collect data from the sensors buried in the ice. This is because the IceCube requires ultra-pure ice in order to analyze neutrinos.

Astronomers have long highlighted electromagnetic observations - the study of light - but there are limitations in this approach because many aspects of the universe are uncertain using light alone.

Cosmic rays are energetic particles radiation that travel at almost the speed of light and bombard the Earth. On September 22 a year ago, it finally caught its prey: a microscopic shower of blue light from an elusive space particle crashing into a molecule of water. Every coloured circle represents light collected by one of the IceCube sensors.

The Swift Observatory orbits the planet while the HESS telescope is located in Namibia and the IceCube observatory is located in the Antarctic or, in fact, under this region.

When a neutrino interacts with the nucleus of an atom it creates a charged secondary particle that produces a characteristic cone of blue light.

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The process of finding a neutrino is almost mind-blogging just like the vast amount of energy which is needed to launch into a straight-line path throughout billions of light years. But for a detecting a neutrino a lot of nuclei in a comparatively little area is required.

The cosmic achievement, reported Thursday by a team of more than 1,000 researchers in the journal Science, is the first time scientists have detected a high-energy neutrino and been able to pinpoint where it came from. This emerging field is dubbed "multi-messenger astrophysics".

"We've proven that neutrons are that third tool - to better understand the wonderful and weird things that are out there", MIT physicist Lindley Winslow told Mashable.

The discovery is "very impressive, and a step in the direction of identifying the origin of the cosmic rays, one of the great outstanding astrophysical puzzles", Kathryn Zurek of Lawrence Berkeley National Laboratory said, adding, however, that there may be other sources of cosmic rays. Dr. Marcos Santander from The University of Alabama said. "This is what IceCube was built to do, and it's an exciting time for neutrino astronomy". By turning many different kinds of telescopes and detectors toward the patch of sky where a high-energy neutrino originates, astronomers hope to converge on a likely source. The object, known colloquially as TXS 0506+056, was something called a blazar approximately 4 billion light-years from Earth. Blazars are giant, oval-shaped galaxies thought to have spinning super massive black holes at their center that blast out radiation - including light. Observations show a blazar flare, an especially bright signal across a range of wavelengths, happening right around the time that the neutrino arrived at IceCube. This evidence made the scientists believe that the neutrino actually belongs to some place outside our galaxy. A blazar is a type of galaxy with a central black hole that spins at high speed and spews streams of neutrinos in opposing directions. The key detection came on September 22, 2017, with the neutrino ultimately traced back to the blazar. "This is not a slam dunk, but it is certainly compelling", says Andeen.

"This result really highlights the importance of taking a multimessenger approach to these searches", said Erik Blaufuss, a research scientist in the UMD Department of Physics who led the effort over the past several years to create and deploy IceCube's high-energy event alert system. "W$3 e need each other to make the next big leaps in understanding".

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