Study of the halley comet near tail glow by Vega-2 three-channel spectrometer data from 10 March 1986

Two-dimensional intensity distributions of the dust continuum, the neutrals and the CO + ion at comparatively undisturbed conditions, taken on 10 March 1986 are applied in order to investigate the near tail of the Halley comet region. Data from the three-channel spectrometer on board Vega-2 are used...

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Bibliographic Details
Published in:Advances in space research 2003-01, Vol.31 (5), p.1285-1290
Main Authors: Guineva, V.Chr, Stoeva, P.Vl, Werner, R
Format: Article
Language:English
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Summary:Two-dimensional intensity distributions of the dust continuum, the neutrals and the CO + ion at comparatively undisturbed conditions, taken on 10 March 1986 are applied in order to investigate the near tail of the Halley comet region. Data from the three-channel spectrometer on board Vega-2 are used. An overall decrease of the dust continuum intensity profile with a gradient -.86±.21 is obtained. Superimposed maxima are observed, probably resulting from the dust jets and the nucleus rotation. Such behaviour is not observed in the OH and C 2 distributions. The neutrals' intensity decreases with the increase of the distance to the nucleus. The mean CO + ion velocity is estimated to lie in the interval from -100 to -140 km/s, on the basis of the (3,0) band form and some band intensity ratios. The presence of spatial (possibly dust) sources at distances about 2×10 5 km from the nucleus is affirmed and noticeable changes in the scales of the order of 10 minutes are observed in the CO + distributions.
ISSN:0273-1177
1879-1948
DOI:10.1016/S0273-1177(02)00942-0