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Article Dans Une Revue Communications Physics Année : 2019

Gamma-ray glow preceding downward terrestrial gamma-ray flash

Harufumi Tsuchiya
  • Fonction : Auteur

Résumé

Two types of high-energy events have been detected from thunderstorms.One is "terrestrial gamma-ray flashes" (TGFs), sub-millisecond emissionscoinciding with lightning discharges. The other is minute-lasting"gamma-ray glows". Although both phenomena are thought to originate fromrelativistic runaway electron avalanches in strong electric fields, theconnection between them is not well understood. Here we reportunequivocal simultaneous detection of a gamma-ray glow termination and adownward TGF, observed from the ground. During a winter thunderstorm inJapan on 9 January 2018, our detectors caught a gamma-ray glow, whichmoved for 100 s with ambient wind, and then abruptly ceased with alightning discharge. Simultaneously, the detectors observed photonuclearreactions triggered by a downward TGF, whose radio pulse was locatedwithin 1 km from where the glow ceased. It is suggested that the highly-electrified region producing the glow was related to the initiation ofthe downward TGF.

Dates et versions

hal-03801596 , version 1 (06-10-2022)

Identifiants

Citer

Yuuki Wada, Teruaki Enoto, Yoshitaka Nakamura, Yoshihiro Furuta, Takayuki Yuasa, et al.. Gamma-ray glow preceding downward terrestrial gamma-ray flash. Communications Physics, 2019, 2, pp.67. ⟨10.1038/s42005-019-0168-y⟩. ⟨hal-03801596⟩
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