Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 6a9c168032807fdbab8763a8 10.12737/stp-123202610 eoujpg Results of current research Results of current research Results of current research Average auroral electron flux energies and nitric oxide concentrations for auroras in the midnight sector of the auroral zone Average auroral electron flux energies and nitric oxide concentrations for auroras in the midnight sector of the auroral zone Дашкевич Жанна Владимировна Dashkevich Zhanna Vladimirovna zhanna@pgia.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Иванов Владимир Евгеньевич Ivanov Vladimir Evgenievich ivanov@pgia.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Полярный геофизический институт Апатиты Россия Polar Geophysical Institute Apatity Russian Federation Полярный геофизический институт Апатиты Россия Polar Geophysical Institute Apatity Russian Federation 19 09 2026 19 09 2026 12 3 89 94 26 08 2025 17 02 2026 © 2026 Дашкевич Ж.В., Иванов В.Е. © 2026 Dashkevich Z.V., Ivanov V.E. 2026 Дашкевич Жанна Владимировна, Иванов Владимир Евгеньевич Dashkevich Zhanna Vladimirovna, Ivanov Vladimir Evgenievich https://naukaru.ru/en/nauka/publications/6a9c168032807fdbab8763a8/view

The statistical distribution of the average energy of precipitating electron fluxes for the midnight sector of the auroral zone has been calculated using numerical modeling results. The average energy maximum is localized within 3–4.5 keV. We study the dependence of nitric oxide concentration in the electron precipitation region on the geomagnetic activity level. It is found that as the geomagnetic activity index Ap increases from 5 to 40, the concentration of nitric oxide at the maximum of its altitude profile [NO]ₘₐₓ decreases from 2∙10⁸ to 4∙10⁷ sm⁻³. The obtained values of the average energy of precipitating electrons and nitric oxide concentrations can be used in solving various problems of modeling auroral events as input average statistical parameters.

The statistical distribution of the average energy of precipitating electron fluxes for the midnight sector of the auroral zone has been calculated using numerical modeling results. The average energy maximum is localized within 3–4.5 keV. We study the dependence of nitric oxide concentration in the electron precipitation region on the geomagnetic activity level. It is found that as the geomagnetic activity index Ap increases from 5 to 40, the concentration of nitric oxide at the maximum of its altitude profile [NO]ₘₐₓ decreases from 2∙10⁸ to 4∙10⁷ sm⁻³. The obtained values of the average energy of precipitating electrons and nitric oxide concentrations can be used in solving various problems of modeling auroral events as input average statistical parameters.

 aurora modeling electron precipitation average energy nitric oxide aurora modeling electron precipitation average energy nitric oxide

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