Positron fraction measurements from the 90s don’t match more recent data. The PAMELA team presents an explanation as to why that is – and it has to do with our sun.
Supernovae in dwarf galaxies can produce large amounts of cosmic rays, which can drastically affect the galaxies.
The gamma-ray experiment HESS offers compelling evidence of a PeVatron that may help us better understand galactic cosmic rays
Today’s paper investigates the mass composition of galactic cosmic rays using radio astronomy measurements
Does the Sun shine in high-energy gamma rays? Apparently so, in the form of a halo surrounding itself. But certain features of this gamma-ray halo are perplexing.
The moon provides an easy way to detect rare ultra-high-energy cosmic rays.