6 papers
Evolution of Thunderstorm Charge Structure Revealed by Particle Composition and Near-Surface Electric Field
A. Chilingarian, B. Sarsyan
Thunderstorm Ground Enhancements (TGEs) provide a direct particle-physics diagnostic of accelerating electric fields within thunderclouds. During 12 15 May 2026, Aragats detectors…
Positron acceleration in thunderstorms
A. Chilingarian, B. Sargsyan
Thunderstorm Ground Enhancements (TGEs) are known manifestations of relativistic runaway electron avalanches (RREAs) developing inside thunderclouds. However, the role of positrons…
Direct Observation of Wilsonian Electrons in Thunderstorms
A. Chilingarian, T. Karapetyan, B. Sargsyan
We analyze electron rich Thunderstorm Ground Enhancements (TGEs) detected at Aragats using the SEVAN Light spectrometer, which can separate charged and neutral particles and recons…
Continued activity of the 25th cycle: largest in 20 years. Ground-level enhancement and Forbush decrease
B. Sargsyan, A. Chilingarian
After a very calm 24th solar activity cycle, the 25th cycle has already seen several interesting events. A Ground Level Enhancement GLE77 was observed on 11 November 2025 following…
Solar neutron and muon detection on November 11, 2025: First simultaneous recovery of energy spectra
A. Chilingarian, B. Sargsyan, L. Kozliner +1
Ground Level Enhancement (GLE) events provide rare opportunities to study high-energy solar particle acceleration through direct detection of secondary radiation at ground level. O…
Variations of the Near-Surface Electric field measured at Aragats during Geomagnetic Storms
A. Chilingarian
At least two mechanisms effectively transfer interplanetary magnetic field (IMF) disturbances into the atmosphere. First, the inflow of solar wind into the ionosphere at low latitu…