作者: BE Carlson , Nikolai G Lehtinen , Umran S Inan , None
DOI: 10.1029/2009JA014531
关键词: Physics 、 Satellite observation 、 Terrestrial gamma-ray flash 、 Gamma ray 、 Relativistic particle 、 Atmospheric electricity 、 Spectral line 、 Optics 、 Astrophysics 、 Local 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.