Particle bursts from thunderclouds: Natural particle accelerators above our heads
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- 1 March 2011
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 83 (6)
- https://doi.org/10.1103/physrevd.83.062001
Abstract
Strong electrical fields inside thunderclouds give rise to fluxes of high-energy electrons and, consequently, gamma rays and neutrons. Gamma rays and electrons are currently detected by the facilities of low orbiting satellites and by networks of surface particle detectors. During intensive particle fluxes, coinciding with thunderstorms, series of particle bursts were detected by the particle detectors of Aragats Space Environmental Center at an altitude of 3250~m. We classify the thunderstorm ground enhancements in 2 categories, one lasting microseconds, and the other lasting tens of minutes. Both types of events can occur at the same time, coinciding with a large negative electric field between the cloud and the ground and negative intracloud lightning. Statistical analysis of the short thunderstorm ground enhancement bursts sample suggests the duration is less than 50\,\,$\mu${}s and spatial extension is larger than 1000\,\,m2. We discuss the origin of thunderstorm ground enhancements and its connection to the terrestrial gamma flashes detected by orbiting gamma-ray observatories.Keywords
This publication has 21 references indexed in Scilit:
- First results on terrestrial gamma ray flashes from the Fermi Gamma‐ray Burst MonitorJournal of Geophysical Research, 2010
- Detection of terrestrial gamma ray flashes up to 40 MeV by the AGILE satelliteJournal of Geophysical Research, 2010
- Terrestrial gamma ray flash production by lightning current pulsesJournal of Geophysical Research, 2009
- An intracloud discharge caused by extensive atmospheric showerPhysics Letters A, 2009
- Monte Carlo model for analysis of thermal runaway electrons in streamer tips in transient luminous events and streamer zones of lightning leadersJournal of Geophysical Research, 2006
- A comparison between Monte Carlo simulations of runaway breakdown and terrestrial gamma‐ray flash observationsGeophysical Research Letters, 2005
- Terrestrial Gamma-Ray Flashes Observed up to 20 MeVScience, 2005
- Discovery of Intense Gamma-Ray Flashes of Atmospheric OriginScience, 1994
- Runaway electron mechanism of air breakdown and preconditioning during a thunderstormPhysics Letters A, 1992
- The Acceleration of β-particles in Strong Electric Fields such as those of ThundercloudsMathematical Proceedings of the Cambridge Philosophical Society, 1925