Cosmic Ray Division

Cosmic ray research in Armenia began in 1943 through the initiative of Artem and Abraham Alikhanyan. Since then, these studies have continued at the AANL high-altitude research stations “Nor Amberd” and “Aragats” (located at altitudes of 2000 m and 3200 m above sea level), as well as in Yerevan. The Cosmic Ray Division (CRD) was formally established as a structural unit of AANL, combining long-standing scientific expertise with modern research methods.

 

The CRD investigates various aspects of cosmic ray physics, including particle acceleration phenomena in the Earth’s atmosphere during thunderstorms. The Division has established international networks of particle detectors for the study of space weather and Sun–Earth interactions.

 

Instrumentation located at the Aragats Space Environmental Center records secondary fluxes of neutral and charged particles, providing continuous 24/7 monitoring data. The scientific database of the CRD contains comprehensive measurements of secondary particle fluxes, which are combined with data from other international stations.

 

At the initiative of the Division, the SEVAN (Space Environment Viewing and Analysis Network) system was developed—a global network of particle detectors aimed at studying space weather conditions and forecasting hazardous space storms. The first four SEVAN detectors were installed in Armenia, in Yerevan and on the slopes of Mount Aragats (at altitudes ranging from 1000 to 3200 m). Today, the network also operates in Croatia, Bulgaria, Germany, the Czech Republic, Slovakia, and India.

 

Since 2009, the Aragats station has been registering annually more than 100 enhancements in electron, gamma-ray, and neutron fluxes associated with thunderstorm activity, known in the scientific literature as Thunderstorm Ground Enhancements (TGEs).

Collaborations

  • Croatia, Slovakia, Bulgaria, Germany, Czech Republic (SEVAN collaboration)
  • USA: MIT, University of Florida
  • Russia: MEPhI, IKI, SINP MSU
  • Germany: DESY, MPI, KIT

Career and education opportunities