Reference : Ultraviolet observations of the Saturnian north aurora and polar haze distribution with ...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/97463
Ultraviolet observations of the Saturnian north aurora and polar haze distribution with the HST-FOC
English
Gérard, Jean-Claude mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)]
Dols, V. [> > > >]
Grodent, Denis mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
Waite, J. H. [> > > >]
Gladstone, G. R. [> > > >]
Prange, R. [ > > ]
1995
NASA STI/Recon Technical Report N
96
11912
No
International
[en] AEROSOLS ; ASTRONOMY ; AURORAL ZONES ; AURORAS ; ENERGY DISSIPATION ; HAZE ; HYDROCARBONS ; HYDROGEN ; SATURN (PLANET) ; SATURN ATMOSPHERE ; ULTRAVIOLET PHOTOGRAPHY ; FAINT OBJECT CAMERA ; HUBBLE SPACE TELESCOPE
[en] Near simultaneous observations of the Saturnian H2 north ultraviolet aurora and the polar haze were made at 153 nm and 210 nm respectively with the Faint Object Camera on board the Hubble Space Telescope. The auroral observations cover a complete rotation of the planet and, when co-added, reveal the presence of an auroral emission near 80 deg N with a peak brightness of about 150 kR of total H2 emission. The maximum optical depth of the polar haze layer is found to be located approximately 5 deg equatorward of the auroral emission zone. The haze particles are presumably formed by hydrocarbon aerosols initiated by H2+ auroral production. In this case, the observed haze optical depth requires an efficiency of aerosol formation of about 6 percent, indicating that auroral production of hydrocarbon aerosols is a viable source of high-latitude haze.
http://hdl.handle.net/2268/97463

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