A PeVatron revealed in gamma rays (IMAGE)

NASA/Goddard Space Flight Center

A PeVatron revealed in gamma rays

Caption

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

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License

Public Domain

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