Document Type
Article
Publication Title
Journal of Geophysical Research A: Space Physics
Abstract
We show that the rate of association between terrestrial gamma ray flashes (TGFs) observed by the Fermi gamma ray burst monitor and VLF discharges detected by the World Wide Lightning Location Network (WWLLN) depends strongly on the duration of the TGF, with the shortest TGFs having associated WWLLN events over 50% of the time, and the longest TGFs showing a less than 10% match rate. This correlation is stronger if one excludes the WWLLN discharges that are not simultaneous (within 200 ms) with the TGF. We infer that the simultaneous VLF discharges are from the relativistic electron avalanches that are responsible for the flash of gamma rays and the nonsimultaneous VLF discharges are from related intracloud lightning strokes. The distributions of far-field radiated VLF stroke energy measured by WWLLN for the simultaneous and nonsimultaneous discharges support the hypothesis of two discrete populations of VLF signals associated with TGFs, with the simultaneous discharges among the strongest measured by WWLLN.
DOI
10.1029/2012JA018288
Publication Date
2013
Recommended Citation
Connaughton, Valerie; Dwyer, Joseph R.; and Cramer, Eric, "Radio Signals From Electron Beams In Terrestrial Gamma Ray Flashes" (2013). Aerospace, Physics, and Space Science Faculty Publications. 542.
https://repository.fit.edu/apss_faculty/542