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Using photochemistry to explain the formation and observation of C ₂ in comets

Weaver, Harold A.; A'Hearn, Michael F.; Sorkhabi, Osman +4 more

Laboratory data taken from the laser-induced fluorescence (LIF) spectrum of C ₂(X ¹Σ_g⁺) radicals produced during the 193 nm laser photolysis of C ₂H ₂ has been used to explain the band profiles of the Hubble Space Telescope (HST) on nucleus spectra of the C ₂ Mulliken sys…

Magnetic mapping of auroral signatures of comet SL9 in the Jovian magnetosphere

Dunlop, M.; Prangé, R.; Maurice, S. +2 more

The electrodynamic interaction of comet Shoemaker-Levy 9 (SL9) with the Jovian magnetosphere gave rise to the detection of several unique phenomena in the UV, X-ray and radio wavelength ranges. Among them, the detection of an unusual FUV bright spot in Hubble Space Telescope images of the southern polar cap on July 20, just before P2 collision, ma…