Dust counter and mass analyser (DUCMA) measurements of comet Halley's coma from VEGA spacecraft

Details Dust counter and mass analyser (DUCMA) measurements of comet Halley's coma from VEGA spacecraft Dust counter and mass analyser (DUCMA) measurements of comet Halley's coma from VEGA spacecraft

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.321..278s&link_type=abstract

Nature (ISSN 0028-0836), vol. 321, May 15, 1986, p. 278-280. Research supported by the AN SSSR and Arthur H. Compton Fund.

Computer Science

51

Cosmic Dust, Halley'S Comet, Mass Spectroscopy, Vega Project, Coma, Particle Flux Density, Particle Size Distribution, Comets, Halley, Spacecraft Observations, Mission Description, Experiments, Ducma, Dust Counter And Mass Analyser, Comae, Vega 1, Vega 2, Particles, Mass, Distribution, Flux, Comet Nuclei, Emissions, Jets, Spectra, Comparisons, Dynamics, Structure

Scientific paper

Measurements of dust particles in comet Halley's coma from Vega spacecraft made with instruments using a new principle of dust detection and having a high time resolution over a large range of dust fluxes and masses are reported. The dust coma, whether quiescent (as seen by Vega 2) or containing a major jet structure, (as seen by Vega 1) displays large, short-term variations throughout which are at times quasi-periodic. The integral mass spectra increase in intensity to the lowest masses measured, and the flux levels lie approximately in the ranges estimated previously from ground-based observations. The coma is highly dynamical on all spatial and temporal scales, suggesting a complex structure of localized regions of dust emission from the nucleus.

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