Pitch Angle Distribution of > 40 keV Auroral Electrons Observed at Rocket Altitudes (a. Precipitating Particles and Auroras) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I)
Pitch angle distributions of auroral electrons with energies greater than 40 keV measured by three sounding rockets (S-210JA-20, -21 and S-310JA-2), which were launched from Syowa Station, Antarctica, during moderate disturbances of auroral activity, are presented. The observations were carried out...
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National Institute of Polar Research
1980
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ftdoajarticles:oai:doaj.org/article:8cb75fb1682640a7a538686e2ab85b9f 2023-05-15T13:43:27+02:00 Pitch Angle Distribution of > 40 keV Auroral Electrons Observed at Rocket Altitudes (a. Precipitating Particles and Auroras) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) Masahiro KODAMA Shoko OKUTANI Masami WADA Takashi IMAI Hajime TAKEUCHI 1980-02-01T00:00:00Z https://doi.org/10.15094/00008114 https://doaj.org/article/8cb75fb1682640a7a538686e2ab85b9f EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00008114 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008114 0085-7289 2432-079X https://doaj.org/article/8cb75fb1682640a7a538686e2ab85b9f Antarctic Record, Iss 68, Pp 35-46 (1980) Geography (General) G1-922 article 1980 ftdoajarticles https://doi.org/10.15094/00008114 2023-01-08T01:32:28Z Pitch angle distributions of auroral electrons with energies greater than 40 keV measured by three sounding rockets (S-210JA-20, -21 and S-310JA-2), which were launched from Syowa Station, Antarctica, during moderate disturbances of auroral activity, are presented. The observations were carried out in the altitude range up to 220 km near magnetic midnight. It is shown that pitch angle distributions above 110 km depend upon both energy and altitude. This is in contrast with pitch angle distributions measured at the quiet time or in the northern polar region, where the trapped type distribution with a peak at 90°pitch angle is observed regardless of energy and altitude. A possible influence of auroral X-rays on the observation results is discussed in connection with pitch angle. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Syowa Station |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Masahiro KODAMA Shoko OKUTANI Masami WADA Takashi IMAI Hajime TAKEUCHI Pitch Angle Distribution of > 40 keV Auroral Electrons Observed at Rocket Altitudes (a. Precipitating Particles and Auroras) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
topic_facet |
Geography (General) G1-922 |
description |
Pitch angle distributions of auroral electrons with energies greater than 40 keV measured by three sounding rockets (S-210JA-20, -21 and S-310JA-2), which were launched from Syowa Station, Antarctica, during moderate disturbances of auroral activity, are presented. The observations were carried out in the altitude range up to 220 km near magnetic midnight. It is shown that pitch angle distributions above 110 km depend upon both energy and altitude. This is in contrast with pitch angle distributions measured at the quiet time or in the northern polar region, where the trapped type distribution with a peak at 90°pitch angle is observed regardless of energy and altitude. A possible influence of auroral X-rays on the observation results is discussed in connection with pitch angle. |
format |
Article in Journal/Newspaper |
author |
Masahiro KODAMA Shoko OKUTANI Masami WADA Takashi IMAI Hajime TAKEUCHI |
author_facet |
Masahiro KODAMA Shoko OKUTANI Masami WADA Takashi IMAI Hajime TAKEUCHI |
author_sort |
Masahiro KODAMA |
title |
Pitch Angle Distribution of > 40 keV Auroral Electrons Observed at Rocket Altitudes (a. Precipitating Particles and Auroras) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
title_short |
Pitch Angle Distribution of > 40 keV Auroral Electrons Observed at Rocket Altitudes (a. Precipitating Particles and Auroras) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
title_full |
Pitch Angle Distribution of > 40 keV Auroral Electrons Observed at Rocket Altitudes (a. Precipitating Particles and Auroras) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
title_fullStr |
Pitch Angle Distribution of > 40 keV Auroral Electrons Observed at Rocket Altitudes (a. Precipitating Particles and Auroras) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
title_full_unstemmed |
Pitch Angle Distribution of > 40 keV Auroral Electrons Observed at Rocket Altitudes (a. Precipitating Particles and Auroras) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
title_sort |
pitch angle distribution of > 40 kev auroral electrons observed at rocket altitudes (a. precipitating particles and auroras) (proceedings of the second symposium on coordinated observations of the ionosphere and magnetosphere in the polar regions : part i) |
publisher |
National Institute of Polar Research |
publishDate |
1980 |
url |
https://doi.org/10.15094/00008114 https://doaj.org/article/8cb75fb1682640a7a538686e2ab85b9f |
geographic |
Syowa Station |
geographic_facet |
Syowa Station |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Antarctic Record, Iss 68, Pp 35-46 (1980) |
op_relation |
https://doi.org/10.15094/00008114 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008114 0085-7289 2432-079X https://doaj.org/article/8cb75fb1682640a7a538686e2ab85b9f |
op_doi |
https://doi.org/10.15094/00008114 |
_version_ |
1766189182391156736 |