Dust impact effects recorded by the APV-N experiment during Comet Halley encounters

Details Dust impact effects recorded by the APV-N experiment during Comet Halley encounters Dust impact effects recorded by the APV-N experiment during Comet Halley encounters

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250c.323o&link_type=abstract

In ESA, Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 3: Posters p 323-326 (SEE N87-26714

Physics

Cosmic Dust, Halley'S Comet, Hypervelocity Impact, Plasma Probes, Vega Project, Electric Fields, Plasma Waves, Regression Analysis, Signal Processing, Signal To Noise Ratios

Scientific paper

During the Vega 1 and 2 comet Halley encounters plasma wave instrument APV-N entered a region of impulsive noise 220,000 km from nucleus. The noise is attributed to dust grain impacts onto spacecraft body. Regression analysis of impact induced effects recorded during flyby shows that from 100,000 km from closest approach most plasma wave spectra measured by APV-N onboard Vega 1 and 2 are significantly influenced by dust impact effects. Signals associated with large dust impacts are directly recorded on the E2 0.1 to 25 Hz electric field waveform channel.

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