Needle-like structures discovered on positively charged lightning branches

BM Hare, O Scholten, J Dwyer, TNG Trinh, S Buitink… - Nature, 2019 - nature.com
Lightning is a dangerous yet poorly understood natural phenomenon. Lightning forms a
network of plasma channels propagating away from the initiation point with both positively …

Observations of the origin of downward terrestrial gamma‐ray flashes

JW Belz, PR Krehbiel, J Remington… - Journal of …, 2020 - Wiley Online Library
In this paper we report the first close, high‐resolution observations of downward‐directed
terrestrial gamma‐ray flashes (TGFs) detected by the large‐area Telescope Array cosmic …

Abrupt elongation (stepping) of negative and positive leaders culminating in an intense corona streamer burst: Observations in long sparks and implications for …

AY Kostinskiy, VS Syssoev, NA Bogatov… - Journal of …, 2018 - Wiley Online Library
Abstract Properties of positive and negative leaders developing in air gaps ranging from 4 to
10 m that were subjected to 100/7,500‐μs voltage impulses were examined using a two …

Separate luminous structures leading positive leader steps

S Huang, W Chen, Z Fu, Y Fu, N Xiang, X Qiu… - Nature …, 2022 - nature.com
The physics governing the propagation of lightning leaders and long spark leaders is still not
well understood. Positive and negative leaders seem to behave differently. Negative leaders …

Dart‐leader and k‐leader velocity from initiation site to termination time‐resolved with 3d interferometry

DP Jensen, RG Sonnenfeld, MA Stanley… - Journal of …, 2021 - Wiley Online Library
Simultaneous data from two interferometers separated by 16 km and synchronized within
100 ns were collected for a thunderstorm near Langmuir Lab on October 23, 2018. Analysis …

Preliminary breakdown of intracloud lightning: Initiation altitude, propagation speed, pulse train characteristics, and step length estimation

T Wu, S Yoshida, Y Akiyama, M Stock… - Journal of …, 2015 - Wiley Online Library
Using a low‐frequency lightning location system comprising 11 sites, we located preliminary
breakdown (PB) processes in 662 intracloud (IC) lightning flashes during the summer of …

Imaging lightning intracloud initial stepped leaders by low‐frequency interferometric lightning mapping array

F Lyu, SA Cummer, G Lu, X Zhou… - Geophysical Research …, 2016 - Wiley Online Library
By comparing the source position of pulses during initial leaders and the paths of
subsequent dart leaders from typical bilevel intracloud (IC) flashes, we demonstrate a new …

Development of side bidirectional leader and its effect on channel branching of the progressing positive leader of lightning

S Yuan, R Jiang, X Qie, Z Sun, D Wang… - Geophysical …, 2019 - Wiley Online Library
Fine time‐resolved images of the development of lightning bidirectional leaders below the
cloud base were captured by a high‐speed camera in association with multiband …

Optical observation of needles in upward lightning flashes

MMF Saba, AR de Paiva, LC Concollato, TA Warner… - Scientific Reports, 2020 - nature.com
Why lightning sometimes has multiple discharges to ground is an unanswered question.
Recently, the observation of small plasma structures on positive leaders re-ignited the …

Characteristics of recoil leaders as observed by LOFAR

BM Hare, O Scholten, S Buitink, JR Dwyer, N Liu… - Physical Review D, 2023 - APS
Lightning dart leaders and recoil leaders are current pulses that propagate along previously
established lightning channels reionizing the channel. They are poorly understood since it is …