Publications (14)
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…
On-ground calibration of the X-ray, gamma-ray, and relativistic electron detector onboard TARANIS
Yuuki Wada, Philippe Laurent, Damien Pailot +9
We developed the X-ray, Gamma-ray and Relativistic Electron detector (XGRE) onboard the TARANIS satellite, to investigate high-energy phenomena associated with lightning discharges…
Evolution of the inner accretion flow and the white-dwarf spin pulse during the 2023 outburst in GK Persei
Mariko Kimura, Takayuki Hayashi, Yuuki Wada +8
We present our X-ray and optical observations performed by NICER, NuSTAR, and Tomo-e Gozen during the 2023 outburst in the intermediate polar GK Persei. The X-ray spectrum consiste…
X-Raying Neutral Density Disturbances in the Mesosphere and Lower Thermosphere induced by the 2022 Hunga-Tonga Volcano Eruption-Explosion
Satoru Katsuda, Hiroyuki Shinagawa, Hitoshi Fujiwara +14
We present X-ray observations of the upper atmospheric density disturbance caused by the explosive eruption of the Hunga Tonga-Hunga Ha'apai (HTHH) volcano on 15 January 2022. From…
Generation possibility of gamma-ray glows induced by photonuclear reactions
Gabriel Sousa Diniz, Ivan Soares Ferreira, Yuuki Wada +1
Relativistic runaway electron avalanches (RREAs) imply a large multiplication of high energy electrons (~1 MeV). Two factors are necessary for this phenomenon: a high electric fiel…
Using Consumer Cameras to Observe Scintillation Light from Radiation
Yuzuka Sasaki, Yuuki Wada, Kazuo S. Tanaka
For a long time, the cloud chamber was the only educational tool available for measuring radiation. In recent years, simple radiation detectors combining scintillators with silicon…