Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 28055 10.12737/stp-51201908 Results of current research Results of current research Results of current research Estimated nitric oxide density in auroras from ground-based photometric data Estimated nitric oxide density in auroras from ground-based photometric data 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 РАН Апатиты Россия Polar Geophysical Institute, RAS Apatity Russian Federation 5 1 58 61 https://naukaru.ru/en/nauka/article/28055/view

In this paper, we numerically estimate the nitric oxide density in auroras, using photometric data on 427.8, 557.7, and 630.0 nm emission intensities. The data were obtained at midnight at observatories of the Polar Geophysical Institute. These estimates were made using a numerical modeling procedure with a time-dependent model of the auroral ionosphere [Dashkevich et al., 2017]. It is shown that the NO density in the maximum of the altitude profile is between (1÷3.3)∙10^8 cm–3. The obtained estimates indicate the absence of a correlation between the [NO]max values and 427.8 nm emission intensities.

In this paper, we numerically estimate the nitric oxide density in auroras, using photometric data on 427.8, 557.7, and 630.0 nm emission intensities. The data were obtained at midnight at observatories of the Polar Geophysical Institute. These estimates were made using a numerical modeling procedure with a time-dependent model of the auroral ionosphere [Dashkevich et al., 2017]. It is shown that the NO density in the maximum of the altitude profile is between (1÷3.3)∙10^8 cm–3. The obtained estimates indicate the absence of a correlation between the [NO]max values and 427.8 nm emission intensities.

 nitric oxide ionosphere component densities auroras emission intensity modeling electron precipitation nitric oxide ionosphere component densities auroras emission intensity modeling electron precipitation

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