Preliminary Results on Analysis of the Cosmic Dust Analyzer Data Between Jupiter and Saturn

Details Preliminary Results on Analysis of the Cosmic Dust Analyzer Data Between Jupiter and Saturn Preliminary Results on Analysis of the Cosmic Dust Analyzer Data Between Jupiter and Saturn

Jan 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007esasp.643...65a&link_type=abstract

Workshop on Dust in Planetary Systems (ESA SP-643). September 26-30 2005, Kauai, Hawaii. Editors: Krueger, H. and Graps, A., p.6

Physics

Scientific paper

We present the Cosmic Dust Analyzer (CDA) data obtained by the Cassini spacecraft during the interplanetary cruise phase between the Jupiter fly-by and the Saturn orbit insertion (SOI). Prior to the Cassini mission, the only in-situ dust detectors ever flown between Jupiter and Saturn were the Pioneer 10 and Pioneer 11 dust experiments. However, owing to the sensitivity of these instruments, only big particles (larger than 10 microns for Pioneer 10 and larger than 25 microns for Pioneer 11) could be detected. In contrast, CDA allows the detection of smaller grains. In particular, hundreds of high-velocity tiny dust particles, so-called stream particles, originating from both the Jovian and Saturnian systems were detected even at great distances from their source. In addition, we identified 17 interplanetary dust particles (IDPs), most probably of cometary origin, on moderate to high eccentric orbits. Furthermore, an impact cluster was identified, relying on both directional and temporal criteria, suggesting an encounter with a cometary trail. The shape of the impact charge signals suggests porous material for those particles.

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