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Related: About this forumHigh-Energy Cosmic Rays Come from Outside Our Galaxy
Giant observatory announces long-awaited result
By Davide Castelvecchi, Nature magazine on September 22, 2017
A particle detector at the Pierre Auger Observatory in Western Argentina. New results from the observatory suggest high-energy cosmic rays have extragalactic origins. Credit: The Pierre Auger Observatory
The Pierre Auger Observatory in Argentina finally has solid evidence that the most energetic particles in nature come from sources outside the Milky Way. Scientists have suspected this for decades, but werent able to confirm ituntil now.
For the first time, we have proof that the highest-energy cosmic rays are of extragalactic origin, says Alan Watson, a UK astronomer and co-founder of the observatory. The result comes as a relief to the researchers, after previous claims regarding their origin made ten years ago by the Pierre Auger Collaboration subsequently turned out to be premature.
The international team analysed 12 years worth of data, and found that particles in the upper range of energies were more likely to come from a region of the sky outside the Milky Ways disk. That asymmetry is roughly consistent with the distribution of neighbouring galaxies, the researchers report in the 22 September issue of Science.
The study does not pinpoint individual sources of the cosmic rays, or explain how they reach their highest energies. But the researchers hope that it is a first step towards understanding their origins.
More:
https://www.scientificamerican.com/article/high-energy-cosmic-rays-come-from-outside-our-galaxy
More images for this complex site, Pierre Auger Observatory:
https://images.search.yahoo.com/search/images;_ylt=AwrB8pK3YcVZ7QYA1m.JzbkF;_ylu=X3oDMTBsZ29xY3ZzBHNlYwNzZWFyY2gEc2xrA2J1dHRvbg--;_ylc=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--?gprid=XhPL_UWSQAiawF24czY.5A&pvid=2cJ0FjY5LjHlO2d6WQqJMAIKMjYwMgAAAAAOQtjR&p=Pierre+Auger+Observatory++Argentina&fr=sfp&fr2=sb-top-images.search.yahoo.com&ei=UTF-8&n=60&x=wrt#id=69&iurl=http%3A%2F%2Flh5.ggpht.com%2F_pInErqUoAv0%2FSvSqHFw4xmI%2FAAAAAAAAArw%2FBTpwixk1gkE%2Faugerbetter.jpg&action=close
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High-Energy Cosmic Rays Come from Outside Our Galaxy (Original Post)
Judi Lynn
Sep 2017
OP
DK504
(3,847 posts)1. "The Pierre Auger Observatory in Argentina finally has solid evidence that the most energetic ...
... particles in nature come from sources outside the Milky Way. "
Oh great !!! Now the aliens are coming to eat our faces and brains. Damnit!!!
underpants
(182,877 posts)2. I had my money on Uranus
Darn the luck!