Browsing Bergen Open Research Archive by Author "Christiansen, Freddy"

Now showing items 1-5 of 5

    • 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 ...

    • First 10 Months of TGF Observations by ASIM 

      Østgaard, Nikolai; Neubert, Torsten; Reglero, Victor; Ullaland, Kjetil; Yang, Shiming; Genov, Georgi; Marisaldi, Martino; Mezentsev, Andrey; Kochkin, Pavlo; Lehtinen, Nikolai; Sarria, David; Qureshi, Bilal Hasan; Solberg, Arne Olav; Maiorana, Carolina; Albrechtsen, Kjetil; Budtz-Jørgensen, Carl; Kuvvetli, Irfan; Christiansen, Freddy; Chanrion, Olivier; Heumesser, Matthias; Navarro-Gonzalez, Javier; Connell, Paul H.; Eyles, Christopher J; Christian, Hugh J.; Al-Nussirat, Samer (Peer reviewed; Journal article, 2019)
      The Atmosphere‐Space Interactions Monitor (ASIM) was launched to the International Space Station on 2 April 2018. The ASIM payload consists of two main instruments, the Modular X‐ray and Gamma‐ray Sensor (MXGS) for imaging ...

    • The modular X- and gamma-ray sensor (MXGS) of the ASIM Payload on the International Space Station 

      Østgaard, Nikolai; Balling, Jan E.; Bjørnsen, Thomas Riis; Brauer, Peter; Budtz-Jørgensen, Carl; Bujwan, Waldemar; Carlson, Brant Edward; Christiansen, Freddy; Connell, Paul; Eyles, Chris; Fehlker, Dominik; Genov, Georgi; Grudzinski, Pawel; Kochkin, Pavlo; Kohfeldt, Anja; Kuvvetli, Irfan; Thomsen, Per Lundahl; Pedersen, Søren Møller; Navarro-Gonzalez, Javier; Neubert, Torsten; Njøten, Kåre; Orleanski, Piotr; Qureshi, Bilal Hasan; Cenkeramaddi, Linga Reddy; Reglero, Victor; Reina, Manuel; Rodrigo, Juan Manuel; Rostad, Maja Elise; Sabau, Maria D.; Kristensen, Steen Savstrup; Skogseide, Yngve; Solberg, Arne Olav; Stadsnes, Johan; Ullaland, Kjetil; Yang, Shiming (Peer reviewed; Journal article, 2019-02-18)
      The Modular X- and Gamma-ray Sensor (MXGS) is an imaging and spectral X- and Gamma-ray instrument mounted on the starboard side of the Columbus module on the International Space Station. Together with the Modular Multi-Spectral ...

    • Simultaneous Observations of EIP, TGF, Elve, and Optical Lightning 

      Østgaard, Nikolai; Cummer, S.A.; Mezentsev, Andrey; Luque, Alejandro; Dwyer, J.; Neubert, Torsten; Reglero, Victor; Marisaldi, Martino; Kochkin, Pavlo; Sarria, David Alexandre Stephan; Lehtinen, Nikolai Grigorievich; Ullaland, Kjetil; Yang, Shiming; Genov, Georgi; Chanrion, Olivier; Christiansen, Freddy; Pu, Y. (Journal article; Peer reviewed, 2021)
      On February 8, 2019, the Atmosphere-Space Interaction Monitor observed a terrestrial gamma-ray flash (TGF) and an Elve from a positive intracloud (+IC) lightning during the initial breakdown stage of a lightning flash north ...

    • Terrestrial Gamma-Ray Flashes With Accompanying Elves Detected by ASIM 

      Bjørge-Engeland, Ingrid; Østgaard, Nikolai; Mezentsev, Andrey; Skeie, Chris Alexander Kallevik; Sarria, David Alexandre Stephan; Lapierre, Jeff; Lindanger, Anders; Neubert, Torsten; Marisaldi, Martino; Lehtinen, Nikolai Grigorievich; Chanrion, Olivier; Ullaland, Kjetil; Yang, Shiming; Genov, Georgi; Christiansen, Freddy; Reglero, Victor (Journal article; Peer reviewed, 2022)
      The Atmosphere-Space Interactions Monitor was designed to monitor Terrestrial Gamma-ray Flashes (TGFs) and Transient Luminous Events (TLEs) from space, enabling the study of how these phenomena are related. In this paper, ...