PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Cosmic-Ray Physics (Indirect, CRI)
High-speed Video Camera Observations Associated with a Terrestrial Gamma-ray Flash at the Telescope Array Detector.
R. Abbasi
Full text: pdf
Pre-published on: August 03, 2023
Published on:
This work presents observations of the optical emission of a lightning flash in conjunction with
a downward-directed Terrestrial Gamma-ray Flash (TGF) at the Telescope Array detector. Previously
in ICRC-2021, we reported joint observations by the Telescope Array Surface Detector
(TASD), the Lightning Mapping Array, a sferic sensor, and a broadband interferometer of particle
showers in coincidence with lightning. These observations consisted of energetic showers of
approximately less than 10-microsecond duration with footprints on the ground of 3-6 kilometers
in diameter, originating in the first one to two milliseconds of downward lightning leaders and in
coincidence with the initial breakdown pulses stage of negative cloud-to-ground lighting leaders.
Scintillator waveform and simulation studies confirmed that these showers must consist primarily
of gamma radiations.
In this work, we use the TASD detector, together with a high-speed video camera, in conjunction
with multiple lightning instruments at the TASD site, to report on the optical emission associated
with a downward-directed terrestrial gamma-ray flash. Results from this study allow us to further
the understanding of the initiation and propagation mechanism of terrestrial gamma-ray flashes.
It will also further our ability to compare the most recent satellite optical emissions counterpart
of upward-directed TGFs to that of downward-directed TGFs.
DOI: https://doi.org/10.22323/1.444.0250
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.