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Catalog of Gamma-ray Glows during Four Winter Seasons in Japan
Yuuki Wada, Takahiro Matsumoto, Teruaki Enoto +12
In 2015 the Gamma-Ray Observation of Winter Thunderstorms (GROWTH) collaboration launched a mapping observation campaign for high-energy atmospheric phenomena related to thundersto…
Thundercloud Project: Exploring high-energy phenomena in thundercloud and lightning
Takayuki Yuasa, Yuuki Wada, Teruaki Enoto +10
We designed, developed, and deployed a distributed sensor network aiming at observing high-energy ionizing radiation, primarily gamma rays, from winter thunderclouds and lightning…
Photoneutron Detection in Lightning by Gadolinium Orthosilicate Scintillators
Yuuki Wada, Kazuhiro Nakazawa, Teruaki Enoto +4
During a winter thunderstorm on November 24, 2017, a downward terrestrial gamma-ray flash took place and triggered photonuclear reactions with atmospheric nitrogen and oxygen nucle…
Downward Terrestrial Gamma-ray Flash observed in Winter Thunderstorm
Yuuki Wada, Teruaki Enoto, Kazuhiro Nakazawa +7
During a winter thunderstorm on 2017 November 24, a strong burst of gamma rays with energies up to 10~MeV was detected coincident with a lightning discharge, by scintillation…
Mapping Observation Project of High-Energy Phenomena during Winter Thunderstorms in Japan
Yuuki Wada, Teruaki Enoto, Yoshihiro Furuta +7
The Gamma-Ray Observation of Winter Thunderclouds (GROWTH) collaboration has been performing observation campaigns of high-energy radiation in coastal areas of Japan Sea. Winter th…
Hardening and termination of long-duration gamma rays detected prior to lightning
H. Tsuchiya, T. Enoto, K. Iwata +10
We report the first observation of 330 MeV prolonged gamma-ray emission that was abruptly terminated by lightning. The gamma-ray detection was made during winter thunderstorms o…