IUE observations of longitudinal and temporal variations in the Jovian auroral emission
The IUE's short wavelength spectrograph has been used to monitor the auroral emissions from Jupiter's northern hemisphere, yielding eight observations between January 1981 and January 1982 of H I Lyman-alpha and the H2 Lyman and Werner bands. Attention is given to an apparent periodic emis...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19840044910 2023-05-15T17:39:49+02:00 IUE observations of longitudinal and temporal variations in the Jovian auroral emission Skinner, T. E. Durrance, S. T. Feldman, P. D. Moos, H. W. Unclassified, Unlimited, Publicly available Mar 1, 1984 http://ntrs.nasa.gov/search.jsp?R=19840044910 unknown http://ntrs.nasa.gov/search.jsp?R=19840044910 Accession ID: 84A27697 Copyright Other Sources 91 Astrophysical Journal, Part 1; 278; 441-448 1984 ftnasantrs 2012-02-15T15:51:36Z The IUE's short wavelength spectrograph has been used to monitor the auroral emissions from Jupiter's northern hemisphere, yielding eight observations between January 1981 and January 1982 of H I Lyman-alpha and the H2 Lyman and Werner bands. Attention is given to an apparent periodic emission flux fluctuation, through detailed modeling of the emission geometry. Two possible auroral zones are defined at the north pole by mapping the magnetic field lines from the Io torus and the magnetotail onto the planet's atmosphere. The observed variation in flux with central meridian longitude is not consistent with a uniform brightness as a function of magnetic longitude in either auroral zone. The data can be fitted by confining the emissions to the region of the northern torus auroral zone, in qualitative agreement with the magnetic anomaly model. A similar emission from the magnetotail auroral zone cannot be ruled out. Other/Unknown Material North Pole NASA Technical Reports Server (NTRS) North Pole |
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NASA Technical Reports Server (NTRS) |
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91 |
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91 Skinner, T. E. Durrance, S. T. Feldman, P. D. Moos, H. W. IUE observations of longitudinal and temporal variations in the Jovian auroral emission |
topic_facet |
91 |
description |
The IUE's short wavelength spectrograph has been used to monitor the auroral emissions from Jupiter's northern hemisphere, yielding eight observations between January 1981 and January 1982 of H I Lyman-alpha and the H2 Lyman and Werner bands. Attention is given to an apparent periodic emission flux fluctuation, through detailed modeling of the emission geometry. Two possible auroral zones are defined at the north pole by mapping the magnetic field lines from the Io torus and the magnetotail onto the planet's atmosphere. The observed variation in flux with central meridian longitude is not consistent with a uniform brightness as a function of magnetic longitude in either auroral zone. The data can be fitted by confining the emissions to the region of the northern torus auroral zone, in qualitative agreement with the magnetic anomaly model. A similar emission from the magnetotail auroral zone cannot be ruled out. |
format |
Other/Unknown Material |
author |
Skinner, T. E. Durrance, S. T. Feldman, P. D. Moos, H. W. |
author_facet |
Skinner, T. E. Durrance, S. T. Feldman, P. D. Moos, H. W. |
author_sort |
Skinner, T. E. |
title |
IUE observations of longitudinal and temporal variations in the Jovian auroral emission |
title_short |
IUE observations of longitudinal and temporal variations in the Jovian auroral emission |
title_full |
IUE observations of longitudinal and temporal variations in the Jovian auroral emission |
title_fullStr |
IUE observations of longitudinal and temporal variations in the Jovian auroral emission |
title_full_unstemmed |
IUE observations of longitudinal and temporal variations in the Jovian auroral emission |
title_sort |
iue observations of longitudinal and temporal variations in the jovian auroral emission |
publishDate |
1984 |
url |
http://ntrs.nasa.gov/search.jsp?R=19840044910 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
North Pole |
geographic_facet |
North Pole |
genre |
North Pole |
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North Pole |
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Other Sources |
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http://ntrs.nasa.gov/search.jsp?R=19840044910 Accession ID: 84A27697 |
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Copyright |
_version_ |
1766140592898703360 |