25 citations · 73 across the 4 of their papers we have counts for
4 papers
X-ray Emissions in a Multiscale Fluid Model of a Streamer Discharge
Nikolai G. Lehtinen, Nikolai Østgaard
We use a three-specie fluid model of electric discharge in air to simulate streamer evolution from the avalanche-to-streamer transition to the collision of opposite-polarity stream…
Whistler wave propagation through the ionosphere of Venus
F. J. Pérez-Invernón, N. G. Lehtinen, F. J. Gordillo-Vázquez +1
We investigate the attenuation of whistler waves generated by hypotetical venusian lightning occurring at the altitude of the cloud layer under different ionospheric conditions. We…
Constraints to do realistic modeling of the electric field ahead of the tip of a lightning leader
Alexander Broberg Skeltved, Nikolai Østgaard, Andrew Mezentsev +2
Several computer models exist to explain the observation of terrestrial gamma-ray flashes (TGFs). Some of these models estimate the electric field ahead of lightning leaders and it…
Relativistic electrons from sparks in the laboratory
N. Østgaard, B. E. Carlson, R. S. Nisi +7
Discharge experiments were carried out at the Eindhoven University of Technology in 2013. The experimental setup was designed to search for electrons produced in meter-scale sparks…