Quasi-periodic emissions (15- 80 min ) from the poles of Jupiter as a principal source of the large-scale high-latitude magnetopause boundary layer of energetic particle
In this study, we concentrate on the examination of the quasi-periodic behavior of 0.5-1.6 MeV (∼40-400 keV) protons (electrons) and of relativistic (> 16 MeV) electrons, observed at Jupiter by two different experiments onboard Ulysses, the HI-SCALE and COSPIN, respectively, within the large-scal...
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ftnkunivathens:oai:lib.uoa.gr:uoadl:3017978 2024-02-11T10:08:42+01:00 Quasi-periodic emissions (15- 80 min ) from the poles of Jupiter as a principal source of the large-scale high-latitude magnetopause boundary layer of energetic particle Karanikola, I. Athanasiou, M. Anagnostopoulos, G.C. Pavlos, G.P. Preka-Papadema, P. 2004-01-01 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3017978 Αγγλικά English eng uoadl:3017978 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3017978 scientific_publication_article Επιστημονική δημοσίευση - Άρθρο Περιοδικού Scientific publication - Journal Article 2004 ftnkunivathens 2024-01-18T18:44:22Z In this study, we concentrate on the examination of the quasi-periodic behavior of 0.5-1.6 MeV (∼40-400 keV) protons (electrons) and of relativistic (> 16 MeV) electrons, observed at Jupiter by two different experiments onboard Ulysses, the HI-SCALE and COSPIN, respectively, within the large-scale south duskside magnetopause boundary layer (MPBL) of energetic particles, from ∼20:00 UT, day 41, to 12:00 UT, day 43. During those times, the observations confirm the transition of Ulysses to an important magnetospheric region with particle intensities comparable to the magnetodisk levels. A careful analysis of high time-resolution intensity, anisotropy and spectral measurements suggests the following: (1) The quasi-periodic ∼40 min (QP-40) energetic electron (> ∼40 keV) and proton (> ∼0.5 MeV) emissions from the south pole were a characteristic phenomenon in the south duskside MPBL; an almost continuous QP 40-min variation has been confirmed in energetic electron observations. (2) When the QP-40 modulation was not evident in energetic particle intensities, it was still detectable in spectral and anisotropy observations. (3) The QP-40 emission is a principal, but not the only periodic, energetic electron and proton emission; other periodicities (∼15, ∼20, ∼30, ∼50, ∼60, ∼80 min) were also significant in energetic particle spectral and anisotropy observations. We infer that QP-40 emissions along with other periodic emissions (∼15, ∼20, ∼30, ∼50, ∼60, ∼80 min) were the principal source of the large-scale high-latitude MPBL of energetic particles during Ulysses outbound pass of Jupiter. © 2003 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper South pole Pergamos - Library and Information Center of National and Kapodistrian University of Athens South Pole Jupiter ENVELOPE(101.133,101.133,-66.117,-66.117) |
institution |
Open Polar |
collection |
Pergamos - Library and Information Center of National and Kapodistrian University of Athens |
op_collection_id |
ftnkunivathens |
language |
English |
description |
In this study, we concentrate on the examination of the quasi-periodic behavior of 0.5-1.6 MeV (∼40-400 keV) protons (electrons) and of relativistic (> 16 MeV) electrons, observed at Jupiter by two different experiments onboard Ulysses, the HI-SCALE and COSPIN, respectively, within the large-scale south duskside magnetopause boundary layer (MPBL) of energetic particles, from ∼20:00 UT, day 41, to 12:00 UT, day 43. During those times, the observations confirm the transition of Ulysses to an important magnetospheric region with particle intensities comparable to the magnetodisk levels. A careful analysis of high time-resolution intensity, anisotropy and spectral measurements suggests the following: (1) The quasi-periodic ∼40 min (QP-40) energetic electron (> ∼40 keV) and proton (> ∼0.5 MeV) emissions from the south pole were a characteristic phenomenon in the south duskside MPBL; an almost continuous QP 40-min variation has been confirmed in energetic electron observations. (2) When the QP-40 modulation was not evident in energetic particle intensities, it was still detectable in spectral and anisotropy observations. (3) The QP-40 emission is a principal, but not the only periodic, energetic electron and proton emission; other periodicities (∼15, ∼20, ∼30, ∼50, ∼60, ∼80 min) were also significant in energetic particle spectral and anisotropy observations. We infer that QP-40 emissions along with other periodic emissions (∼15, ∼20, ∼30, ∼50, ∼60, ∼80 min) were the principal source of the large-scale high-latitude MPBL of energetic particles during Ulysses outbound pass of Jupiter. © 2003 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Karanikola, I. Athanasiou, M. Anagnostopoulos, G.C. Pavlos, G.P. Preka-Papadema, P. |
spellingShingle |
Karanikola, I. Athanasiou, M. Anagnostopoulos, G.C. Pavlos, G.P. Preka-Papadema, P. Quasi-periodic emissions (15- 80 min ) from the poles of Jupiter as a principal source of the large-scale high-latitude magnetopause boundary layer of energetic particle |
author_facet |
Karanikola, I. Athanasiou, M. Anagnostopoulos, G.C. Pavlos, G.P. Preka-Papadema, P. |
author_sort |
Karanikola, I. |
title |
Quasi-periodic emissions (15- 80 min ) from the poles of Jupiter as a principal source of the large-scale high-latitude magnetopause boundary layer of energetic particle |
title_short |
Quasi-periodic emissions (15- 80 min ) from the poles of Jupiter as a principal source of the large-scale high-latitude magnetopause boundary layer of energetic particle |
title_full |
Quasi-periodic emissions (15- 80 min ) from the poles of Jupiter as a principal source of the large-scale high-latitude magnetopause boundary layer of energetic particle |
title_fullStr |
Quasi-periodic emissions (15- 80 min ) from the poles of Jupiter as a principal source of the large-scale high-latitude magnetopause boundary layer of energetic particle |
title_full_unstemmed |
Quasi-periodic emissions (15- 80 min ) from the poles of Jupiter as a principal source of the large-scale high-latitude magnetopause boundary layer of energetic particle |
title_sort |
quasi-periodic emissions (15- 80 min ) from the poles of jupiter as a principal source of the large-scale high-latitude magnetopause boundary layer of energetic particle |
publishDate |
2004 |
url |
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3017978 |
long_lat |
ENVELOPE(101.133,101.133,-66.117,-66.117) |
geographic |
South Pole Jupiter |
geographic_facet |
South Pole Jupiter |
genre |
South pole |
genre_facet |
South pole |
op_relation |
uoadl:3017978 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:3017978 |
_version_ |
1790608258187132928 |