The origin of the 1 to 10 MeV feature in unknown. Indeed, the origin of the entire X and gamma-ray backgrounds remains enigmatic. The gamma-ray background (from about 200 keV to at least 100 MeV) appears to be well matched by a power law, with one nonpower law feature: the 1 to 10 MeV feature. Here, we present and discuss a functional form which fits the 1 to 10 MeV feature exceedingly well. Theoretical interpretations of this fit are discussed.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics