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    Source of Extreme Cosmic Particles tagged posts

    Astronomers confirm Star Wreck as Source of Extreme Cosmic Particles

    August 15, 2022, Categories  Astronomy/Space

    This sequence compares Fermi results in three energy ranges. Pulsar J2229+6114 is the brilliant source at the top, the northern tip of supernova remnant G106.3+2.7 (outlined in green). In each energy range, the sequence first shows the number of gamma rays and then the excess amounts compared with expectations from a model of the background. Brighter colors indicate greater numbers of gamma rays or excess amounts. At the highest energies, a new source of gamma rays emerges, produced when protons accelerated by the supernova’s shock wave strike a nearby gas cloud.
    Credit: NASA/Fermi/Fang et al. 2022

    Astronomers have long sought the launch sites for some of the highest-energy protons in our galaxy...

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