6533b7d8fe1ef96bd1269a5e
RESEARCH PRODUCT
A terrestrial gamma-ray flash and ionospheric ultraviolet emissions powered by lightning.
Freddy ChristiansenPavlo KochkinIrfan KuvvetliJ. Navarro-gonzálezKrystallia DimitriadouGeorgi GenovAndrey MezentsevC. J. EylesTorsten NeubertShiming YangP. H. ConnellNikolai ØStgaardCarl Budtz-jørgensenKjetil UllalandVictor RegleroMartino MarisaldiMatthias HeumesserIb Lundgaard RasmussenOlivier Chanrionsubject
PhysicsMultidisciplinary010504 meteorology & atmospheric sciencesAstrophysicsmedicine.disease_cause01 natural sciencesLightningElectromagnetic radiationFlash (photography)13. Climate actionElectric field0103 physical sciencesmedicineThunderstormIonosphere010303 astronomy & astrophysicsUltraviolet0105 earth and related environmental sciencesTerrestrial gamma-ray flashdescription
Gamma-ray flash from a lightning leader Terrestrial gamma-ray flashes (TGFs) are millisecond pulses of gamma rays produced by thunderstorms. Neubert et al. observed a TGF from above, using instruments on the International Space Station. High-speed photometry in optical, ultraviolet, x-ray, and gamma-ray bands allowed them to determine the sequence of events that produced the TGF. Emission from an intracloud lightning leader was followed within a millisecond by the TGF. The subsequent lightning flash produced an electromagnetic pulse, which induced expanding waves of ultraviolet emission in the ionosphere above the thunderstorm, called an elve. The authors conclude that high electric fields produced within the lightning leader generated the TGF. Science , this issue p. 183
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-01-10 | Science (New York, N.Y.) |