• The 3rd AGILE Terrestrial Gamma Ray Flash Catalog. Part I: Association to Lightning Sferics 

      Lindanger, Anders; Marisaldi, Martino; Maiorana, Carolina; Sarria, David; Albrechtsen, Kjetil; Østgaard, Nikolai; Galli, M.; Ursi, Alessandro; Labanti, C.; Tavani, Marco; Pittori, C.; Verrecchia, F. (Journal article; Peer reviewed, 2020)
      We present a complete and systematic search for terrestrial gamma-ray flashes (TGFs), detected by AGILE, that are associated with radio sferics detected by the World Wide Lightning Location Network (WWLLN) in the period ...
    • The 3rd AGILE Terrestrial Gamma-ray Flashes Catalog. Part II: Optimized Selection Criteria and Characteristics of the New Sample 

      Maiorana, Carolina; Marisaldi, Martino; Lindanger, Anders; Østgaard, Nikolai; Ursi, Alessandro; Sarria, David; Galli, M.; Labanti, C.; Tavani, Marco; Pittori, C.; Verrecchia, F. (Journal article; Peer reviewed, 2020)
      We present in this work the third catalog of terrestrial gamma-ray flashes (TGFs) by the AGILE mission and the new search algorithm that was developed to produce it. We firstly introduce the new selection criteria, designed ...
    • Constraining Spectral Models of a Terrestrial GammaRay Flash From a Terrestrial Electron Beam Observation by the Atmosphere-Space Interactions Monitor 

      Sarria, David Alexandre Stephan; Østgaard, Nikolai; Kochkin, Pavlo; Lehtinen, Nikolai Grigorievich; Mezentsev, Andrey; Marisaldi, Martino; Lindanger, Anders; Maiorana, Carolina; Carlson, Brant Edward; Neubert, Torsten; Reglero, Victor; Ullaland, Kjetil; Yang, Shiming; Genov, Georgi; Qureshi, Bilal Hasan; Budtz-Jørgensen, Carl; Kuvvetli, Irfan; Christiansen, Freddy; Chanrion, Olivier; Navarro-Gonzalez, Javier; Connel, P.; Eyles, Chris (Journal article; Peer reviewed, 2021)
      Terrestrial Gamma ray Flashes (TGFs) are short flashes of high energy photons, produced by thunderstorms. When interacting with the atmosphere, they produce relativistic electrons and positrons, and a part gets bounded to ...
    • On the High‐Energy Spectral Component and Fine Time Structure of Terrestrial Gamma Ray Flashes 

      Marisaldi, Martino; Galli, M.; Labanti, C.; Østgaard, Nikolai; Sarria, David; Cummer, S. A.; Lyu, F.; Lindanger, Anders; Campana, R.; Ursi, A.; Tavana, M; Fuschino, F.; Argan, A.; Trois, A.; Pittori, C.; Verrecchia, F (Journal article; Peer reviewed, 2019)
      Terrestrial gamma ray flashes (TGFs) are very short bursts of gamma radiation associated to thunderstorm activity and are the manifestation of the highest‐energy natural particle acceleration phenomena occurring on Earth. ...
    • Production of Terrestrial Gamma-Ray Flashes During the Early Stages of Lightning Flashes 

      Lindanger, Anders; Skeie, Chris Alexander Kallevik; Marisaldi, Martino; Bjørge-Engeland, Ingrid; Østgaard, Nikolai; Mezentsev, Andrey; Sarria, David Alexandre Stephan; Lehtinen, Nikolai Grigorievich; Reglero, Victor; Chanrion, Olivier; Neubert, Torsten (Journal article, 2022)
      Terrestrial Gamma-ray Flashes (TGFs) are short emissions of high energy photons associated with thunderstorms. It has been known since the discovery of TGFs that they are associated with lightning, and several case studies ...
    • Search for Terrestrial Gamma-ray Flashes in AGILE data by correlation with ground-based lightning measurements 

      Lindanger, Anders (Master thesis, 2018-06-16)
      Terrestrial Gamma-ray Flashes (TGFs) are sub-millisecond bursts of high energy photons, associated with lightning flashes produced inside thunderstorms. The Astro-Rivelatore Gamma a Immagini Leggero (AGILE) satellite is ...
    • Spectral Analysis of Individual Terrestrial Gamma-ray Flashes Detected by ASIM 

      Lindanger, Anders; Marisaldi, Martino; Sarria, David Alexandre Stephan; Østgaard, Nikolai; Lehtinen, Nikolai Grigorievich; Skeie, Chris Alexander Kallevik; Mezentsev, Andrey; Kochkin, Pavlo; Ullaland, Kjetil; Yang, Shiming; Genov, Georgi; Carlson, Brant Edward; Köhn, Christoph; Navarro-Gonzalez, Javier; Connell, Paul H.; Reglero, Victor; Neubert, Torsten (Journal article; Peer reviewed, 2021)
      The Atmosphere-Space Interactions Monitor (ASIM) is the first instrument in space specifically designed to observe terrestrial gamma-ray flashes (TGFs). TGFs are high energy photons associated with lightning flashes and ...
    • Spectral Analysis of Terrestrial Gamma-ray Flashes and Their Connection to Lightning Discharges 

      Lindanger, Anders (Doctoral thesis, 2022-04-01)
      This PhD thesis consists of three papers published in the Journal of Geophysical Research: Atmospheres. The thesis provides a new method to identify TGFs, detected from space, that are associated with radio-sferics. The ...