Estimating the average energy of auroral electrons from 427.8 nm emission intensity measurements

Zhanna Dashkevich; Vladimir Ivanov

doi:doi:10.12737/stp-104202408

UDC 551.510.535

Estimating the average energy of auroral electrons from 427.8 nm emission intensity measurements

Published в Solar-Terrestrial Physics · Volume 10, Issue 4, 2024 · Pages 65–71 · Rubrics: Results of current research

DOI 10.12737/stp-104202408

Received: 18.06.2024 Accepted: 02.09.2024 Published: 18.12.2024 Language of publication: ENG

Authors

Zhanna Dashkevich ¹ · Vladimir Ivanov ²

1 Polar Geophysical Institute (302, nauchnyy sotrudnik)
from 01.01.1991 to 01.01.2022 Apatity, Murmansk, Russian Federation

2 Polar Geophysical Institute, RAS
Apatity, Russian Federation

ABSTRACT

We propose a method for estimating average energy of precipitating electrons from 427.8 nm emission intensity measurements. This method is based on the experimental dependence of the ratio of λ630.0 and λ427.8 nm emission intensities on the λ427.8 emission intensity and model calculations of the dependence of the average auroral electron energy on the I₆₃₀.₀/I₄₂₇.₈ ratio. We present numerical estimates of the influence of three factors on this dependence: the shape of the auroral electron energy spectrum, the atomic oxygen concentration, and the NO concentration. The dependence of the average energy of the auroral electron flux on the 427.8 nm emission intensity is obtained and its analytical approximation is presented.

KEYWORDS

auroras diagnostics average energy electron precipitation emission intensity 427.8 nm 630.0 nm

Information Text

Authors:

1. Polar Geophysical Institute (302, nauchnyy sotrudnik)
from 01.01.1991 to 01.01.2022
Apatity, Murmansk, Russian Federation

2. Polar Geophysical Institute, RAS

Apatity, Russian Federation

Type:

Article

Pages:

from 65 to 71

Status:

Published

Subject area:

UDC 551.510.535

Language:

English

Keywords:

auroras, diagnostics, average energy, electron precipitation, emission intensity, 427.8 nm, 630.0 nm

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References

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Estimating the average energy of auroral electrons from 427.8 nm emission intensity measurements

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