Gamma-ray Bubbles Display a Spectrum with Higher Peak Energies (IMAGE)

NASA/Goddard Space Flight Center

Gamma-ray Bubbles Display a Spectrum with Higher Peak Energies

Caption

The bubbles display a spectrum with higher peak energies than the diffuse gamma-ray glow seen throughout the sky. In addition, the bubbles display sharp edges in Fermi LAT data. Both of these qualities suggest that the structure arose in a sudden, impulsive event.

Credit

NASA/DOE/Fermi LAT/D. Finkbeiner et al.

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