Reflection and Refraction of the L‐O Mode 5 kHz Saturn Narrowband Emission by the Magnetosheath

The reflection‐by‐sheath mechanism of 5 kHz narrowband emissions (NB) at Saturn is confirmed by Cassini observations during several crossings of the magnetopause, which show that the 5 kHz NB can be prevented from escaping Saturn's magnetosphere. The L‐O mode 5 kHz NB remained visible in areas...

Descripción completa

Detalles Bibliográficos
Autores principales: Wu, S. Y., Ye, S. Y., Fischer, G., Jackman, C. M., Wang, J., Menietti, J. D., Cecconi, B., Long, M. Y.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Research Letter
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9285440/
https://www.ncbi.nlm.nih.gov/pubmed/35859935
http://dx.doi.org/10.1029/2021GL096990
_version_ 1784747780585029632
author Wu, S. Y.
Ye, S. Y.
Fischer, G.
Jackman, C. M.
Wang, J.
Menietti, J. D.
Cecconi, B.
Long, M. Y.
author_facet Wu, S. Y.
Ye, S. Y.
Fischer, G.
Jackman, C. M.
Wang, J.
Menietti, J. D.
Cecconi, B.
Long, M. Y.
author_sort Wu, S. Y.
collection PubMed
description The reflection‐by‐sheath mechanism of 5 kHz narrowband emissions (NB) at Saturn is confirmed by Cassini observations during several crossings of the magnetopause, which show that the 5 kHz NB can be prevented from escaping Saturn's magnetosphere. The L‐O mode 5 kHz NB remained visible in areas of low plasma density but disappeared in regions of high plasma density. In three cases, NB disappeared immediately after the crossings of Saturn's magnetopause. A possible reflected NB event observed near the magnetosheath is discussed. This mechanism can help explain the 5 kHz NB observed at low latitudes outside the Enceladus plasma torus and their upper frequency limit variations. This mechanism significantly improves the current understanding of the 5 kHz NB.
format Online
Article
Text
id pubmed-9285440
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher John Wiley and Sons Inc.
record_format MEDLINE/PubMed
spelling pubmed-92854402022-07-18 Reflection and Refraction of the L‐O Mode 5 kHz Saturn Narrowband Emission by the Magnetosheath Wu, S. Y. Ye, S. Y. Fischer, G. Jackman, C. M. Wang, J. Menietti, J. D. Cecconi, B. Long, M. Y. Geophys Res Lett Research Letter The reflection‐by‐sheath mechanism of 5 kHz narrowband emissions (NB) at Saturn is confirmed by Cassini observations during several crossings of the magnetopause, which show that the 5 kHz NB can be prevented from escaping Saturn's magnetosphere. The L‐O mode 5 kHz NB remained visible in areas of low plasma density but disappeared in regions of high plasma density. In three cases, NB disappeared immediately after the crossings of Saturn's magnetopause. A possible reflected NB event observed near the magnetosheath is discussed. This mechanism can help explain the 5 kHz NB observed at low latitudes outside the Enceladus plasma torus and their upper frequency limit variations. This mechanism significantly improves the current understanding of the 5 kHz NB. John Wiley and Sons Inc. 2022-03-14 2022-03-16 /pmc/articles/PMC9285440/ /pubmed/35859935 http://dx.doi.org/10.1029/2021GL096990 Text en © 2022. The Authors. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Letter
Wu, S. Y.
Ye, S. Y.
Fischer, G.
Jackman, C. M.
Wang, J.
Menietti, J. D.
Cecconi, B.
Long, M. Y.
Reflection and Refraction of the L‐O Mode 5 kHz Saturn Narrowband Emission by the Magnetosheath
title Reflection and Refraction of the L‐O Mode 5 kHz Saturn Narrowband Emission by the Magnetosheath
title_full Reflection and Refraction of the L‐O Mode 5 kHz Saturn Narrowband Emission by the Magnetosheath
title_fullStr Reflection and Refraction of the L‐O Mode 5 kHz Saturn Narrowband Emission by the Magnetosheath
title_full_unstemmed Reflection and Refraction of the L‐O Mode 5 kHz Saturn Narrowband Emission by the Magnetosheath
title_short Reflection and Refraction of the L‐O Mode 5 kHz Saturn Narrowband Emission by the Magnetosheath
title_sort reflection and refraction of the l‐o mode 5 khz saturn narrowband emission by the magnetosheath
topic Research Letter
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9285440/
https://www.ncbi.nlm.nih.gov/pubmed/35859935
http://dx.doi.org/10.1029/2021GL096990
work_keys_str_mv AT wusy reflectionandrefractionofthelomode5khzsaturnnarrowbandemissionbythemagnetosheath
AT yesy reflectionandrefractionofthelomode5khzsaturnnarrowbandemissionbythemagnetosheath
AT fischerg reflectionandrefractionofthelomode5khzsaturnnarrowbandemissionbythemagnetosheath
AT jackmancm reflectionandrefractionofthelomode5khzsaturnnarrowbandemissionbythemagnetosheath
AT wangj reflectionandrefractionofthelomode5khzsaturnnarrowbandemissionbythemagnetosheath
AT meniettijd reflectionandrefractionofthelomode5khzsaturnnarrowbandemissionbythemagnetosheath
AT cecconib reflectionandrefractionofthelomode5khzsaturnnarrowbandemissionbythemagnetosheath
AT longmy reflectionandrefractionofthelomode5khzsaturnnarrowbandemissionbythemagnetosheath

Ejemplares similares