Dust density and mass distribution near comet Halley from Giotto observations

  title={Dust density and mass distribution near comet Halley from Giotto observations},
  author={J. McDonnell and W. M. Alexander and W. Burton and E. Bussoletti and D. Clark and R. Grard and E. Gr{\"u}n and M. Hanner and D. Hughes and E. Igenbergs and H. Kuczera and B. Lindblad and J. Mandeville and A. Minafra and G. Schwehm and Z. Sekanina and M. Wallis and J. Zarnecki and S. Chakaveh and G. Evans and S. T. Evans and J. Firth and A. N. Littler and L. Massonne and R. E. Olearczyk and G. Pankiewicz and T. Stevenson and R. Turner},
The dust impact detection system (DIDSY) carried by the Giotto spacecraft has measured the density and mass spectrum (in the range 10−20–10−8 kg) of the dust near comet Halley. Profiles of the dust spectrum obtained at a distance of 291,000 km from the Halley nucleus show a complex mass spectrum, depleted in intermediate and small masses. Near closest approach (∼600 km from the nucleus), the dust activity increases dramatically and the spectrum is dominated by larger masses. The cumulative mass… Expand
Giotto observations of Comet Halley dust
The Formation of Encke Meteoroids and Dust Trail