Dust density and mass distribution near comet Halley from Giotto observations

Autor:	A. Minafra, J.C. Mandeville, John C. Zarnecki, S. C. Chakaveh, J. G. Firth, A. N. Littler, Max K. Wallis, G. C. Evans, R. E. Olearczyk, S. T. Evans, R. J. L. Grard, G. S. Pankiewicz, Gerhard Schwehm, T. J. Stevenson, D. H. Clark, R. F. Turner, W. M. Burton, H. Kuczera, Z. Sekanina, W. M. Alexander, David W. Hughes, Bertil Anders Lindblad, J. A. M. McDonnell, L. Massonne, E. Bussoletti, Eberhard Grün, Eduard Igenbergs, Martha S. Hanner
Rok vydání:	1986
Předmět:	Physics Multidisciplinary Mass distribution Comet tail Comet dust Halley's Comet Astronomy Astrophysics Astronomical spectroscopy Comet nucleus Mass spectrum Astrophysics::Earth and Planetary Astrophysics Astrophysics::Galaxy Astrophysics Cosmic dust
Zdroj:	Nature. 321:338-341
ISSN:	1476-4687 0028-0836
DOI:	10.1038/321338a0
Popis:	The density and the mass spectrum of the dust near comet Halley have been measured by the Giotto space probe's dust impact detection system. The dust spectrum obtained at 291,000 km from the comet nucleus show depletion in small and intermediate masses; at about 600 km from the nucleus, however, the dust activity rises and the spectrum is dominated by larger masses. Most of the mass striking Giotto is noted to reside in the few large particles penetrating the dust shield. Momentum balances and energy considerations applied to an observed deceleration suggest that a large mass of the spacecraft was detached by an impact.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ff3f0e526e6f4455f6dd93eeccf98c00 https://doi.org/10.1038/321338a0 Zobrazit plný text záznamu