Terrestrial gamma ray flash production by lightning current pulses

作者: BE Carlson , Nikolai G Lehtinen , Umran S Inan , None

DOI: 10.1029/2009JA014531

关键词: PhysicsSatellite observationTerrestrial gamma-ray flashGamma rayRelativistic particleAtmospheric electricitySpectral lineOpticsAstrophysicsLocal field

摘要: [1] Terrestrial gamma ray flashes (TGFs) are brief bursts of rays observed by satellites, typically in coincidence with detectable lightning. We incorporate TGF observations and the key physics behind current production theories lightning to produce constraints on mechanisms. The combined naturally suggest a mechanism for pulses leader channels. involves local field enhancements due charge redistribution draws seed energetic particles from cold runaway breakdown processes. can reproduce time scale including multipulse TGFs, is agreement existing altitude estimates, may help explain spectra producing unbeamed emissions.

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