تقرير
Enhanced C$_2$H$_2$ absorption within Jupiter's southern auroral oval from Juno UVS observations
| العنوان: | Enhanced C$_2$H$_2$ absorption within Jupiter's southern auroral oval from Juno UVS observations |
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| المؤلفون: | Giles, Rohini S., Hue, Vincent, Greathouse, Thomas K., Gladstone, G. Randall, Kammer, Joshua A., Versteeg, Maarten H., Bonfond, Bertrand, Grodent, Denis G., Gérard, Jean-Claude, Sinclair, James A., Bolton, Scott J., Levin, Steven M. |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics Physics (Other) |
| مصطلحات موضوعية: | Astrophysics - Earth and Planetary Astrophysics, Physics - Space Physics |
| الوصف: | Reflected sunlight observations from the Ultraviolet Spectrograph (UVS) on the Juno spacecraft were used to study the distribution of acetylene (C$_2$H$_2$) at Jupiter's south pole. We find that the shape of the C$_2$H$_2$ absorption feature varies significantly across the polar region, and this can be used to infer spatial variability in the C$_2$H$_2$ abundance. There is a localized region of enhanced C$_2$H$_2$ absorption which coincides with the location of Jupiter's southern polar aurora; the C$_2$H$_2$ abundance poleward of the auroral oval is a factor of 3 higher than adjacent quiescent, non-auroral longitudes. This builds on previous infrared studies which found enhanced C$_2$H$_2$ abundances within the northern auroral oval. This suggests that Jupiter's upper-atmosphere chemistry is being strongly influenced by the influx of charged auroral particles and demonstrates the necessity of developing ion-neutral photochemical models of Jupiter's polar regions. Comment: Accepted in JGR: Planets |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1029/2022JE007610 |
| الوصول الحر: | http://arxiv.org/abs/2302.10946Test |
| رقم الانضمام: | edsarx.2302.10946 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1029/2022JE007610 |
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