Five-minute pulsation of hard gamma radiation intensity in the atmosphere
Gal'per A.M. , Kirilov-Ugryumov V.G. , Kurochkin A.V. , Leikov N.G. , Luchkov B.I.
Quasiperiodic pulsations have been observed in the intensity of atmospheric gamma rays (energy greater than 40 MeV) with a period of about 5 minutes, characteristic of oscillations of the solar surface. The pulsations were observed in a series of high-altitude balloons at different geomagnetic latitudes.