Maximum strength of the atmospheric electric field (Mar 1, 2021)
PHYSICAL REVIEW D 103, 043021 (2021) Understanding the maximum potential difference (i.e. voltage) inside thunderstorms is one of the fundamental problems of atmospheric physics directly connected with the enigma of the lightning initiation. In 1925 C.T.R. Wilson estimated the maximum potential difference in the atmosphere to be a few gigavolts:...
THE QUEST TO UNDERSTAND HOW THUNDERSTORMS CREATE GAMMA RAYS (Feb 26, 2021)
On top of Kanazawa Izumigaoka High School, the wind whips at researchers Teruaki Enoto and Yuuki Wada as they wrestle with a boxy instrument, trying to secure it to the roof. A nearby weathervane swings ominously and clouds gather over distant mountains, all signs of the storm brewing in the direction of the Sea of Japan. This is exactly the kind of weather Wada and Enoto...
CRD main achievements in 2019-2020 (Jan 8, 2021)
Cosmic Ray Division physicists perform research in many areas of Astroparticle physics and high-energy Atmospheric physics: • CR Origin and acceleration mechanisms. • Solar-terrestrial connections; solar modulation of galactic CRs. • Solar proton accelerators. • High Energy phenomena in Atmosphere, Thunderstorm...
CRD Research profile and main achievements(2017-2018) (Jan 8, 2021)
In 1942, the famous physicists brothers Abram and Artem Alikhanian organized a scientific expedition to Mount Aragats and started cosmic ray detection with various particle detectors. They have found high-energy protons and deuterons in the flux of cosmic rays and several new unstable particles (called by them varitrons). These studies laid the foundation for the regular...
SCOSTEP/PRESTO NEWSLETTER (Oct 1, 2020)
ZAO maintains two instruments used for space weather research: one of the Space Environmental Viewing and Analysis Network (SEVAN) particle detectors (Figure 3) and a Sudden Ionospheric Disturbance (SID) monitor. SEVAN detector is also used for research of new high-energy phenomena originated in terrestrial atmosphere –...
Как радиоактивный газ поднимается в небо: Армянские физики первыми описали путь радона (Sep 18, 2020)
Ученые из ЕрФИ первыми в мире исследовали, как от Земли в атмосферу поднимается радиоактивный газ. Работа их измерительных станций также помогает понять, не опасны ли солнечные вспышки для Земли. Как устроены облака? Казалось бы, мы это знаем с пятого класса, а физикам надо работать на супер-коллайдерах, а не пробавляться "школьной...
Understanding High-Energy Physics in Earth’s Atmosphere (Feb 20, 2020)
Thunderstorms present a variety of hazards, including emissions of ionizing radiation. An international group of scientists met at an Armenian observatory to share their findings. Read more...
Armenia's Cosmic-Ray Catchers (Feb 20, 2020)
High in the Caucasus Mountains, a former Soviet weapons-research facility now studies mysterious particles streaking in from space. Read more...
Alone on a Mountaintop, Awaiting a Very Hard Rain (Feb 20, 2020)
But the universe is still the biggest and cheapest particle accelerator of them all. And so the buildings and the instruments at Aragats remain, like ghost ships in the cosmic rain, maintained for long stretches of time by a skeleton crew of two technicians and a cook. They still wait for news that could change the universe: a quantum bullet more powerful...
Alone on a Mountaintop, Awaiting a Very Hard Rain (Jan 23, 2020)
Al one on a Mountaintop, Awaiting a Very Hard Rain