ben Jaffel, L;
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Far‐UV emissions from the SL9 impacts with Jupiter.
Geophysical Research Letters
2425 - 2428.
Available under License : See the attached licence file.
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.
|Title:||Far‐UV emissions from the SL9 impacts with Jupiter|
|Open access status:||An open access version is available from UCL Discovery|
|Additional information:||Copyright 1995 by the American Geophysical Union|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Science and Technology Studies|
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