55 citations · 319 across the 11 of their papers we have counts for
8 papers
On the timing between terrestrial gamma ray flashes, radio atmospherics, and optical lightning emission
Thomas Gjesteland, Nikolai Østgaard, Phillip Bitzer +1
On 25 October 2012 the Reuven Ramaty High Energy Solar Spectroscope Imager (RHESSI) and the Tropical Rainfall Measuring Mission (TRMM) satellites passed over a thunderstorm on the…
Radio emissions from double RHESSI TGFs
Andrew Mezentsev, Nikolai Østgaard, Thomas Gjesteland +5
A detailed analysis of Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) terrestrial gamma ray flashes (TGFs) is performed in association with World Wide Lightning Loca…
Enhanced detection of terrestrial gamma-ray flashes by AGILE
M. Marisaldi, A. Argan, A. Ursi +21
At the end of March 2015 the onboard software configuration of the AGILE satellite was modified in order to disable the veto signal of the anticoincidence shield for the minicalori…
Modeling the relativistic runaway electron avalanche and the feedback mechanism with GEANT4
Alexander Broberg Skeltved, Nikolai Østgaard, Brant Carlson +2
This paper presents the first study that uses the GEometry ANd Tracking 4 (GEANT4) toolkit to do quantitative comparisons with other modelling results related to the production of…
An altitude and distance correction to the source fluence distribution of TGFs
R. S. Nisi, N. Østgaard, T. Gjesteland +1
The source fluence distribution of terrestrial gamma ray flashes (TGFs) has been extensively discussed in recent years, but few have considered how the TGF fluence distribution at…
Observation of intrinsically bright terrestrial gamma ray flashes from the Mediterranean basin
T. Gjesteland, N. Østgaard, S. Laviola +7
We present three terrestrial gamma ray flashes (TGFs) observed over the Mediterranean basin by the Reuven Ramaty High Energy Solar Spectroscope Imager (RHESSI) satellite. Since the…
A new population of terrestrial gamma-ray flashes in the RHESSI data
N. Østgaard, K. H. Albrechtsen, T. Gjesteland +1
Terrestrial gamma-ray flashes (TGFs) are the most energetic photon phenomenon occurring naturally on Earth. An outstanding question is as follows: Are these flashes just a rare exo…
High-energy radiation from thunderstorms and lightning with LOFT
M. Marisaldi, D. M. Smith, S. Brandt +15
This is a White Paper in support of the mission concept of the Large Observatory for X-ray Timing (LOFT), proposed as a medium-sized ESA mission. We discuss the potential of LOFT f…