• Evidence of a New Population of Weak Terrestrial Gamma‐Ray Flashes Observed From Aircraft Altitude 

      Bjørge-Engeland, Ingrid; Østgaard, Nikolai; Sarria, David Alexandre Stephan; Marisaldi, Martino; Mezentsev, Andrey; Fuglestad, Anders Nødland; Lehtinen, Nikolai Grigorievich; Grove, J. Eric; shy, daniel; Lang, Timothy J.; Quick, Mason; Christian, Hugh; Schultz, C; blakesley, richard; Adams, Ian; Kroodsma, Rachael; Heymsfield, Gerald M.; Ullaland, Kjetil; Yang, Shiming; Qureshi, Bilal Hasan; Søndergaard, Jens; Husa, Bendik; Walker, Daniel; Bateman, Monte; Mach, Douglas; Bitzer, Philip; Füllekrug, Martin; Cohen, Morris B.; Stanley, Mark; Cummer, Steven A.; Montanyà, Joan; Pazos, Marni; Velosa, Camilo Younes; van der Velde, Oscar; Pu, Yunjiao; Krehbiel, Paul; Roncancio, Jose Andres; López, Jesús A.; Urbani, Michele; Santos, A.; Neubert, Torsten; Gordillo-Vazquez, Francisco J. (Journal article; Peer reviewed, 2024)
      Terrestrial Gamma-ray Flashes (TGFs) are ten-to-hundreds of microsecond bursts of gamma-rays produced when electrons in strong electric fields in thunderclouds are accelerated to relativistic energies. Space instruments ...
    • High Peak Current Lightning and the Production of Elves 

      Bjørge-Engeland, Ingrid; Østgaard, Nikolai; Marisaldi, Martino; Luque, Alejandro; Mezentsev, Andrey; Lehtinen, Nikolai Grigorievich; Chanrion, Olivier; Fuglestad, Anders Nødland; Neubert, Torsten; Gordillo-Vazquez, Francisco J. (Journal article; Peer reviewed, 2024)
      Elves are observed as expanding rings of light in the UV and visible optical bands. They are produced when electromagnetic pulses from lightning discharges interact with the lower parts of the ionosphere. Elves are well ...
    • Spectral Observations of Optical Emissions Associated With Terrestrial Gamma-Ray Flashes 

      Heumesser, Matthias; Chanrion, Olivier; Neubert, Torsten; Christian, Hugh J.; Dimitriadou, Krystallia; Gordillo-Vazquez, Francisco J.; Luque, Alejandro; Pérez-Invernón, F. J.; Blakeslee, Richard J.; Østgaard, Nikolai; Reglero, Victor; Köhn, Christoph (Journal article; Peer reviewed, 2021)
      The Atmosphere-Space Interactions Monitor measures Terrestrial Gamma-Ray Flashes (TGFs) simultaneously with optical emissions from associated lightning activity. We analyzed optical measurements at 180–230, 337, and 777.4 ...