Effects of equatorial chorus wave normal azimuthal distribution on wave propagation

Effects of equatorial chorus wave normal azimuthal distribution on wave propagation

The non-ducted propagation characteristics of the VLF waves in the inner magnetosphere were studied with respect to their frequency, source localization, and initial polar angle between the wave-normal and the background magnetic field and azimuthal angle. The ray tracing software based on multi-com...

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Збережено в:
Бібліографічні деталі
Видавець:Головна астрономічна обсерваторія НАН України
Дата:2012
Автори: Breuillard, H., Mendzhul, D.I., Agapitov, O.V.
Формат: Стаття
Мова:English
Опубліковано: Головна астрономічна обсерваторія НАН України 2012
Назва видання:Advances in Astronomy and Space Physics
Онлайн доступ:http://dspace.nbuv.gov.ua/handle/123456789/119393
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Цитувати:Effects of equatorial chorus wave normal azimuthal distribution on wave propagation / H. Breuillard, D.I. Mendzhul, O.V. Agapitov // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 2. — С. 167-172. — Бібліогр.: 31 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
id irk-123456789-119393
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spelling irk-123456789-1193932017-06-07T03:04:47Z Effects of equatorial chorus wave normal azimuthal distribution on wave propagation Breuillard, H. Mendzhul, D.I. Agapitov, O.V. The non-ducted propagation characteristics of the VLF waves in the inner magnetosphere were studied with respect to their frequency, source localization, and initial polar angle between the wave-normal and the background magnetic field and azimuthal angle. The ray tracing software based on multi-components cold plasma approach was developed by use of the Olson-Pfitzer magnetic field model and the GCPM model of plasma density. We described dynamics of the wave-normals direction during its propagation and magnetospheric reflection. We showed that whistler waves can be reflected when lower hybrid resonance frequency becomes greater than the wave frequency: ωLH > ω. It corresponds to magnetic latitude λ ∼ 50°. The simulation results confirmed the inapplicability of the quasi-longitudinal approximation to describe the propagation of magnetospheric whistlers. The simulation results of chorus emissions propagation, which use realistic distributions of waves on the initial parameters are presented. Particularly, we obtained distributions of chorus emission waves in dependence on the wave-normal directions for different magnetic latitudes, with respect to initial azimuthal angle. It is required for studying diffusive processes in the radiation belts. The results are found to be in a good agreement with the CLUSTER STAFF-SA measurements. 2012 Article Effects of equatorial chorus wave normal azimuthal distribution on wave propagation / H. Breuillard, D.I. Mendzhul, O.V. Agapitov // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 2. — С. 167-172. — Бібліогр.: 31 назв. — англ. 2227-1481 http://dspace.nbuv.gov.ua/handle/123456789/119393 en Advances in Astronomy and Space Physics Головна астрономічна обсерваторія НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
description The non-ducted propagation characteristics of the VLF waves in the inner magnetosphere were studied with respect to their frequency, source localization, and initial polar angle between the wave-normal and the background magnetic field and azimuthal angle. The ray tracing software based on multi-components cold plasma approach was developed by use of the Olson-Pfitzer magnetic field model and the GCPM model of plasma density. We described dynamics of the wave-normals direction during its propagation and magnetospheric reflection. We showed that whistler waves can be reflected when lower hybrid resonance frequency becomes greater than the wave frequency: ωLH > ω. It corresponds to magnetic latitude λ ∼ 50°. The simulation results confirmed the inapplicability of the quasi-longitudinal approximation to describe the propagation of magnetospheric whistlers. The simulation results of chorus emissions propagation, which use realistic distributions of waves on the initial parameters are presented. Particularly, we obtained distributions of chorus emission waves in dependence on the wave-normal directions for different magnetic latitudes, with respect to initial azimuthal angle. It is required for studying diffusive processes in the radiation belts. The results are found to be in a good agreement with the CLUSTER STAFF-SA measurements.
format Article
author Breuillard, H.
Mendzhul, D.I.
Agapitov, O.V.
spellingShingle Breuillard, H.
Mendzhul, D.I.
Agapitov, O.V.
Effects of equatorial chorus wave normal azimuthal distribution on wave propagation
Advances in Astronomy and Space Physics
author_facet Breuillard, H.
Mendzhul, D.I.
Agapitov, O.V.
author_sort Breuillard, H.
title Effects of equatorial chorus wave normal azimuthal distribution on wave propagation
title_short Effects of equatorial chorus wave normal azimuthal distribution on wave propagation
title_full Effects of equatorial chorus wave normal azimuthal distribution on wave propagation
title_fullStr Effects of equatorial chorus wave normal azimuthal distribution on wave propagation
title_full_unstemmed Effects of equatorial chorus wave normal azimuthal distribution on wave propagation
title_sort effects of equatorial chorus wave normal azimuthal distribution on wave propagation
publisher Головна астрономічна обсерваторія НАН України
publishDate 2012
url http://dspace.nbuv.gov.ua/handle/123456789/119393
citation_txt Effects of equatorial chorus wave normal azimuthal distribution on wave propagation / H. Breuillard, D.I. Mendzhul, O.V. Agapitov // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 2. — С. 167-172. — Бібліогр.: 31 назв. — англ.
series Advances in Astronomy and Space Physics
work_keys_str_mv AT breuillardh effectsofequatorialchoruswavenormalazimuthaldistributiononwavepropagation
AT mendzhuldi effectsofequatorialchoruswavenormalazimuthaldistributiononwavepropagation
AT agapitovov effectsofequatorialchoruswavenormalazimuthaldistributiononwavepropagation
first_indexed 2023-10-18T20:34:27Z
last_indexed 2023-10-18T20:34:27Z
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