Far‐UV emissions from the SL9 impacts with Jupiter

G. E. Ballester; W. M. Harris; G. R. Gladstone; J. T. Clarke; R. Prangé; P. D. Feldman; M. R. Combi; C. Emerich; D. F. Strobel; A. Talavera; S. A. Budzien; M. B. Vincent; T. A. Livengood; K. L. Jessup; M. A. McGrath; D. T. Hall; J. M. Ajello; L. ben Jaffel; D. Rego; G. Fireman; L. Woodney; S. Miller; X. Liu

doi:10.1029/95GL02422

Far‐UV emissions from the SL9 impacts with Jupiter

G. E. Ballester, W. M. Harris, G. R. Gladstone, J. T. Clarke, R. Prangé, P. D. Feldman, M. R. Combi, C. Emerich, D. F. Strobel, A. Talavera, S. A. Budzien, M. B. Vincent, T. A. Livengood, K. L. Jessup, M. A. McGrath, D. T. Hall, J. M. Ajello, L. ben Jaffel, D. Rego, G. FiremanL. Woodney, S. Miller, X. Liu

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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 ∼10 min time scale. Positive detections of H₂ Lyman and Werner band (1230–1620 Å) and H‐Lyα emissions are made for impacts K and S, and marginally for P2. No thermal continuum is observed. The radiated far‐UV output was >10²¹ ergs. The H₂ 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 Å) and C (1657 Å) of cometary origin are tentatively identified.

Original language	English (US)
Pages (from-to)	2425-2428
Number of pages	4
Journal	Geophysical Research Letters
Volume	22
Issue number	17
DOIs	https://doi.org/10.1029/95GL02422
State	Published - Sep 1 1995
Externally published	Yes

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

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10.1029/95GL02422

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Ballester, G. E., Harris, W. M., Gladstone, G. R., Clarke, J. T., Prangé, R., Feldman, P. D., Combi, M. R., Emerich, C., Strobel, D. F., Talavera, A., Budzien, S. A., Vincent, M. B., Livengood, T. A., Jessup, K. L., McGrath, M. A., Hall, D. T., Ajello, J. M., ben Jaffel, L., Rego, D., ... Liu, X. (1995). Far‐UV emissions from the SL9 impacts with Jupiter. Geophysical Research Letters, 22(17), 2425-2428. https://doi.org/10.1029/95GL02422

Ballester, GE , Harris, WM, Gladstone, GR, Clarke, JT, Prangé, R, Feldman, PD, Combi, MR, Emerich, C, Strobel, DF, Talavera, A, Budzien, SA, Vincent, MB, Livengood, TA, Jessup, KL, McGrath, MA, Hall, DT, Ajello, JM, ben Jaffel, L, Rego, D, Fireman, G, Woodney, L, Miller, S & Liu, X 1995, 'Far‐UV emissions from the SL9 impacts with Jupiter', Geophysical Research Letters, vol. 22, no. 17, pp. 2425-2428. https://doi.org/10.1029/95GL02422

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title = "Far‐UV emissions from the SL9 impacts with Jupiter",

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 ∼10 min time scale. Positive detections of H2 Lyman and Werner band (1230–1620 {\AA}) and H‐Lyα emissions are made for impacts K and S, and marginally for P2. No thermal continuum is observed. The radiated far‐UV output was >1021 ergs. The H2 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 {\AA}) and C (1657 {\AA}) of cometary origin are tentatively identified.",

author = "Ballester, {G. E.} and Harris, {W. M.} and Gladstone, {G. R.} and Clarke, {J. T.} and R. Prang{\'e} and Feldman, {P. D.} and Combi, {M. R.} and C. Emerich and Strobel, {D. F.} and A. Talavera and Budzien, {S. A.} and Vincent, {M. B.} and Livengood, {T. A.} and Jessup, {K. L.} and McGrath, {M. A.} and Hall, {D. T.} and Ajello, {J. M.} and {ben Jaffel}, L. and D. Rego and G. Fireman and L. Woodney and S. Miller and X. Liu",

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T1 - Far‐UV emissions from the SL9 impacts with Jupiter

AU - Ballester, G. E.

AU - Harris, W. M.

AU - Gladstone, G. R.

AU - Clarke, J. T.

AU - Prangé, R.

AU - Feldman, P. D.

AU - Combi, M. R.

AU - Emerich, C.

AU - Strobel, D. F.

AU - Talavera, A.

AU - Budzien, S. A.

AU - Vincent, M. B.

AU - Livengood, T. A.

AU - Jessup, K. L.

AU - McGrath, M. A.

AU - Hall, D. T.

AU - Ajello, J. M.

AU - ben Jaffel, L.

AU - Rego, D.

AU - Fireman, G.

AU - Woodney, L.

AU - Miller, S.

AU - Liu, X.

PY - 1995/9/1

Y1 - 1995/9/1

N2 - 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 ∼10 min time scale. Positive detections of H2 Lyman and Werner band (1230–1620 Å) and H‐Lyα emissions are made for impacts K and S, and marginally for P2. No thermal continuum is observed. The radiated far‐UV output was >1021 ergs. The H2 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 Å) and C (1657 Å) of cometary origin are tentatively identified.

AB - 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 ∼10 min time scale. Positive detections of H2 Lyman and Werner band (1230–1620 Å) and H‐Lyα emissions are made for impacts K and S, and marginally for P2. No thermal continuum is observed. The radiated far‐UV output was >1021 ergs. The H2 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 Å) and C (1657 Å) of cometary origin are tentatively identified.

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JO - Geophysical Research Letters

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Far‐UV emissions from the SL9 impacts with Jupiter

Abstract

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