Analysis of ELF electromagnetic field pulses recorded by the Hylaty station coinciding with terrestrial gamma‐ray flashes
TLDR
In this paper, the authors have described the data analysis method for ELF electromagnetic field pulses and applied it to study the first examples of TGFs registered by Fermi GBM coinciding with ELF pulses recorded by the Hylaty ELF station located in the Carpathian Mountains in Poland.Abstract:
[1] Terrestrial gamma-ray flashes (TGFs) were registered the first time by the NASA's Compton Gamma Ray Observatory. The physical mechanism of TGF generation is not fully known, but there is a consensus among researchers that the radiation is produced by bremsstrahlung of relativistic electrons in the thunderstorm regions of the atmosphere. Therefore, TGFs have been linked to positive-polarity intracloud lightning discharges, strong positive cloud-to-ground discharges or upward discharges from a thundercloud top. The currently operating Fermi Gamma-ray Space Telescope is equipped with a Gamma-ray Burst Monitor that can detect terrestrial gamma-ray flashes. It opens up a new possibility to search for lightning discharges responsible for TGFs. Ground-based lightning monitoring systems in the ELF, LF and VLF ranges can be used for that purpose. The ELF systems are especially useful, since they provide a large monitoring range of several thousand kilometers for strong atmospheric discharges (charge moments above several tens of C km). In this paper we have described the data analysis method for ELF electromagnetic field pulses and applied it to study our first examples of TGFs registered by Fermi GBM coinciding with ELF pulses recorded by the Hylaty ELF station located in the Carpathian Mountains in Poland. Using our ELF electromagnetic wave propagation model we have evaluated charge moments for the two registered events to be 320 and 110 C km and provided upper limits for the remaining events.read more
Citations
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The physics of lightning
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Extremely low frequency electromagnetic field measurements at the Hylaty station and methodology of signal analysis
Andrzej Kulak,Andrzej Kulak,Jerzy Kubisz,Slawomir Klucjasz,Adam Michalec,Janusz Mlynarczyk,Zenon Nieckarz,Michał Ostrowski,Stanislaw Zieba +8 more
TL;DR: The Hylaty geophysical station as discussed by the authors is a high-sensitivity and low-noise facility for extremely low frequency (ELF, 0.03-300 Hz) electromagnetic field measurements, which enables a variety of geophysical and climatological research related to atmospheric, ionospheric, magnetospheric and space weather physics.
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An unusual sequence of sprites followed by a secondary TLE: An analysis of ELF radio measurements and optical observations
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ELF Propagation Parameters for the Ground-Ionosphere Waveguide With Finite Ground Conductivity
Andrzej Kulak,Janusz Mlynarczyk +1 more
TL;DR: In this article, the penetration of the ground by an electromagnetic wave traveling along the surface is analyzed and a solution that allows including ground parameters in the frequently used 2-D analytical model of ground-ionosphere waveguide is proposed.
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Globally coherent short duration magnetic field transients and their effect on ground based gravitational-wave detectors
I. Kowalska-Leszczynska,Marie-Anne Bizouard,Tomasz Bulik,Nelson Christensen,Nelson Christensen,Michael W. Coughlin,Mark Golkowski,Jerzy Kubisz,Andrzej Kulak,Janusz Mlynarczyk,Florent Robinet,Maximilian Rohde +11 more
TL;DR: In this paper, the authors measured at least 2.3 coincident (between Poland and Colorado) magnetic transient events per day where one of the pulses exceeds 200 pT and confirmed that in the advanced detector era short duration transient gravitational-wave searches must account for correlated magnetic field noise in the global detector network.
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