Low-Energy Break in the Spectrum of Galactic Cosmic Rays
Low-Energy Break in the Spectrum of Galactic Cosmic Rays
Measurements of the low energy spectrum of Galactic Cosmic Rays (GCR) by detectors at or near the Earth are affected by Solar modulation. To overcome this difficulty, we consider nearby molecular clouds as GCR detectors outside the Solar system. Using gamma-ray observations of the clouds by the Fermi telescope we …