Ballester, GE and Harris, WM and Gladstone, GR and Clarke, JT and Prangé, R and Feldman, PD and Combi, MR and Emerich, C and Strobel, DF and Talavera, A and Budzien, SA and Vincent, MB and Livengood, TA and Jessup, KL and McGrath, MA and Hall, DT and Ajello, JM and ben Jaffel, L and Rego, D and Fireman, G and Woodney, L and Miller, S and Liu, X (1995) Far‐UV emissions from the SL9 impacts with Jupiter. Geophysical Research Letters , 22 (17) 2425 - 2428. 10.1029/95GL02422.
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Abstract
Observations with the International Ultraviolet Explorer (IUE) during the impacts of the fragments of comet D/Shoemaker-Levy 9 with Jupiter show far-UV emissions from the impact sites within a similar to 10 min time scale. Positive detections of H-2 Lyman and Werner band (1230-1620 Angstrom) and H-Ly alpha emissions are made for impacts K and S, and marginally for P2. No thermal continuum is observed. The radiated far-UV output was >10(21) ergs. The H-2 spectrum is consistent with electron collisional excitation if significant CH4 absorption is included. Such emissions could result from plasma processes generated by the impacts. Non-thermal excitation by the high altitude entry and explosion shocks may also be relevant. Emissions by Al+ (1671 Angstrom) and C (1657 Angstrom) of cometary origin are tentatively identified.
| Type: | Article |
|---|---|
| Title: | Far‐UV emissions from the SL9 impacts with Jupiter |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1029/95GL02422 |
| Publisher version: | http://dx.doi.org/10.1029/95GL02422 |
| Language: | English |
| Additional information: | Copyright 1995 by the American Geophysical Union |
| Keywords: | Dayglow |
| UCL classification: | UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Science and Technology Studies |
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