Search for gamma-ray emission from the Sun during solar minimum with the ARGO-YBJ experiment

Understand

The hadronic interaction of cosmic rays with solar atmosphere can produce high energy gamma rays.

• The gamma-ray luminosity is correlated both with the flux of primary cosmic rays and the intensity of the solar magnetic field.
• The gamma rays below 200 GeV have been observed by $Fermi$ without any evident energy cutoff.
• The bright gamma-ray flux above 100 GeV has been detected only during solar minimum.