Indication for precession of comet Halley's nucleus from dust tail analysis |
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| Authors: | Klaus Beisser |
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| Institution: | (1) Dr. Remeis-Observatory, Bamberg, F.R.G. |
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| Abstract: | The distinct structures ta comet Halley's dust tail around the beginning of March 1986 are analyzed by means of a computer simulation based on nucleus data obtained by the Giotto mission. It is shown that the assumption of a considerable free precession is required to understand the ground based dust tail observations from that time supposing a rotational period of some 50 hr. But a precession-free rotation with a period of about 7 days does not contradict an analysis of the dust tail structure. In both cases, an asymmetric distribution of the relevant emission sources is required. |
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