AE33A-0471
Relativistic feedback models of terrestrial gamma-ray flashes and gamma-ray glows

Wednesday, 16 December 2015
Poster Hall (Moscone South)
Joseph R Dwyer, University of New Hampshire Main Campus, Department of Physics, Durham, NH, United States
Abstract:
Relativistic feedback discharges, also known as dark lightning, are capable of explaining many of the observed properties of terrestrial gamma-ray flashes (TGFs) and gamma-ray glows, both created within thunderstorms. During relativistic feedback discharges, the generation of energetic electrons is self–sustained via the production of backward propagating positrons and back-scattered x-rays, resulting in very larges fluxes of energetic radiation. In addition, ionization produces large electric currents that generate LF/VLF radio emissions and eventually discharge the electric field, terminating the gamma-ray production. In this presentation, new relativistic feedback model results will be presented and compared to recent observations.