In this review we describe a transient type of gas discharge which is commonly called a
streamer discharge, as well as a few related phenomena in pulsed discharges. Streamers …

Despite being one of the most familiar and widely recognized natural phenomena, lightning
remains relatively poorly understood. Even the most basic questions of how lightning is …

It is now well established that both thunderclouds and lightning routinely emit x-rays and
gamma-rays. These emissions appear over wide timescales, ranging from sub-microsecond …

The paper provides a review of research data showing the role of runaway electrons in gas
breakdowns and diffuse discharges in an inhomogeneous electric field at a pressure of 0.01 …

The Aragats Space Environmental Center facilities continuously measure fluxes of neutral
and charged secondary cosmic ray incidents on the Earth's surface. Since 2003 in the 1 …

In the present paper, we demonstrate that the exponential expansion of streamers
propagating in fields higher than the critical fields for stable propagation of streamers of a …

As thunderclouds charge, the large‐scale fields may approach the relativistic feedback
threshold, above which the production of relativistic runaway electron avalanches becomes …

Abstract The Atmosphere‐Space Interactions Monitor (ASIM) was launched to the
International Space Station on 2 April 2018. The ASIM payload consists of two main …

It is by now well understood that large sprite discharges at the low air densities of the
mesosphere are physically similar to small streamer discharges in air at standard …

This paper reviews optical diagnostic methods and approaches applied to study the
fundamentals of streamer discharges, considering the peculiarities of streamers developing …