On a feasibility of satellite-borne and balloon-borne detection of ultrahigh energy cosmic rays by the radio method
It is proposed to use radio receivers on satellites and balloons for detecting radio emission from nearly horizontal extensive air showers (EAS) initiated by ultrahigh energy cosmic ray (UHECR) particles. The radio pulse produced in the atmosphere by the UHECR with E ≥ 10 20 eV is calculated and compared with the background. The detection area of the atmosphere surface in the radio method is estimated at (1.5 ÷ 2) 10 7 km 2 for the satellite- borne detection; the corresponding event rate is (1 ÷ 1.5) 10 2 events per year at E ≥ 10 20 eV. For the balloon-borne detection these numbers are about one order of magnitude lower. The accuracy of finding the EAS energy and arrival angles is estimated.