Star wreck source of extreme cosmic particles, NASA's Fermi finds out

tech.hindustantimes.com:

How aware are you about our galaxy? Have you heard about PeVatron? NASA has informed that a PeVatron is a scientific term, a source for some of the highest-energy particles known to whip across our galaxy. "A PeVatron isn't a robot from a 1950s sci-fi movie: it's a scientific term, a source for some of the highest-energy particles known to whip across our galaxy. PeVatrons are notoriously hard to pin down—but our Fermi telescope might be closing in on one," NASA tweeted.

A PeVatron isn't a robot from a 1950s sci-fi movie: it's a scientific term, a source for some of the highest-energy particles known to whip across our galaxy.PeVatrons are notoriously hard to pin down—but our Fermi telescope might be closing in on one: https://t.co/Y0jmfBYRyr pic.twitter.com/BcL1n2hh4J

"Astronomers have long sought the launch sites for some of the highest-energy protons in our galaxy. Now a study using 12 years of data from NASA's Fermi Gamma-ray Space Telescope confirms that one supernova remnant is just such a place," NASA said in a report. Fermi has shown that the shock waves of exploded stars boost particles to speeds comparable to that of light. Called cosmic rays, these particles mostly take the form of protons, but can include atomic nuclei and electrons.

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"Because they all carry an electric charge, their paths become scrambled as they whisk through our galaxy's magnetic field. Since we can no longer tell which direction they originated from, this masks their birthplace. But when these particles collide with interstellar gas near the supernova remnant, they produce a tell-tale glow in gamma rays – the highest-energy light there is," NASA added.

“Theorists