ИСТИНА

• Охват: Международная
• Даты проведения: 2-6 октября 2017
• Место проведения: Nor Amberd International Conference Centre of the Yerevan Physics Institute, Byurakan, Aragatsotn District, Armenia
• Организатор:
  Yerevan Physics Institute
• Веб-сайт: http://crd.yerphi.am/Conferences/tepa2017/home
• Описание конференции:

  New emerging field of high-energy atmospheric physics (HEAP) is still lacking firmly established concepts and theories. The relationship of lightning and elementary particle fluxes in the thunderclouds is not fully understood to date. HEAP presently includes 2 main physical phenomena: Terrestrial Gamma Flashes (TGFs) - brief burst of gamma radiation (sometimes also electrons and positrons) registered by the orbiting gamma ray observatories in the space and Thunderstorm ground enhancements (TGEs) -the prolonged particle fluxes registered on the ground level|. Both TGFs and TGEs are related to the thunderstorms and lightning flashes: TGEs - by directly detecting electric field and lightning occurrences above the detector site; TGFs by making rather complicated synchronization with worldwide lightning detecting networks. The central engine initiated TGE is believed to be the Relativistic Runaway Electron avalanches (RREA) accelerated seed electrons from ambient population of cosmic rays (CR) in the large-scale thundercloud electric field up to 40-50 MeV. Observation of numerous TGEs by the Japanese, Russian, Armenian, Chines, Slovakian groups prove that RREA is a robust and realistic mechanism for electron acceleration and multiplication leaving no doubts about correctness of the RREA model for the TGE initiation. Models using CERN origin GEANT4 code support in situ measurements of electron and gamma ray energy spectra at Aragats. Another model of the gamma glow initiation was used for explaining gamma ray detections by TERA array in Florida. The main idea of the model is thermal electron acceleration in the streamer tips up to energies of ∼65 keV; thereafter these electrons runaway and accelerate further by the extreme electric field in the streamer zone in vicinity of negative lightning leader. This 2-stage model includes development of very strong electric fields in very short times. Correspondingly, the model includes compatible theories and models with several parameters which values are very difficult to measure or estimate (for instance the electric field of 260 kV/cm in the lightning leader tip, or- field strength and elongation in the streamer zone where runaway electrons suppose to reach MeV energies). Thus, many questions about thundercloud electrification and discharge mechanisms, lightning initiation, propagation and attachment processes, the global electrical circuit, and transient luminous events do not have a complete and common accepted explanation yet. One of the most important problems “do lightning flashes produce relativistic particles or not?” is still open. TEPA meeting is great opportunity for scientist to meet, discuss, invent new ideas and make new bridges for collaborative works.

• Добавил в систему: Казначеева Маргарита Артемовна

Доклады:

• 2017 Orbital measurements of UV transient luminous radiation of thunderstorm origin by the TUS detector (Устный)
• Авторы: the Lomonosov-UHECR/TLE collaboration, Kaznacheeva M.A.