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Production of terrestrial gamma-ray flashes by an electromagnetic pulse from a lightning return stroke
Space, Telecommunications, and Radioscience Laboratory, Electrical Engineering Department, Stanford University, Stanford, California, USA
Space, Telecommunications, and Radioscience Laboratory, Electrical Engineering Department, Stanford University, Stanford, California, USA
Recent observations of terrestrial gamma-ray flashes (TGFs) (Smith et al., 2005) suggest the need for a new mechanism of TGF production. Consideration of relativistic runaway electron (RRE) avalanche driven by electromagnetic impulses (EMP) radiated by rapidly moving lightning return strokes indicates that TGFs can be produced by discharges with peak return stroke currents I p > 450–700 kA with velocities v rs/c = 0.99–0.995.
Received 2 June 2005; accepted 16 September 2005; published 15 October 2005.
Citation: (2005), Production of terrestrial gamma-ray flashes by an electromagnetic pulse from a lightning return stroke, Geophys. Res. Lett., 32, L19818, doi:10.1029/2005GL023702.
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