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Optical observations of the AMPTE artificial comet from the Northern Hemisphere

Abstract

The AMPTE artificial comet of 27 December 1984 developed a well-defined core (maximum size 160 × 100km) of cold barium ions, surrounded by a diffuse coma, 500km in diameter, consisting of ions extracted from the core. A plasma tail extended from the core, mainly directed away from the Sun. The plasma tail and diffuse coma consisted of energetic ions (>200 eV). Confounding predictions, the artificial comet survived for barely 5 minutes, and the core of the comet moved southward, rather than in the direction of the solar wind

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Rees, D., Hallinan, T., Stenbaek-Nielsen, H. et al. Optical observations of the AMPTE artificial comet from the Northern Hemisphere. Nature 320, 704–708 (1986). https://doi.org/10.1038/320704a0

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