Cassini between Venus and Earth: Detection of interstellar dust

Details Cassini between Venus and Earth: Detection of interstellar dust Cassini between Venus and Earth: Detection of interstellar dust

Aug 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jgra..108.8032a&link_type=abstract

Journal of Geophysical Research, Volume 108, Issue A10, pp. LIS 7-1, CiteID 8032, DOI 10.1029/2003JA009874

Physics

11

Planetology: Solar System Objects: Dust, Planetology: Comets And Small Bodies: Dust, Planetology: Comets And Small Bodies: Remote Sensing, Planetology: Comets And Small Bodies: Satellites

Scientific paper

We report the successful in situ measurement of interstellar dust particles inside the orbit of the Earth with the Cosmic Dust Analyzer (CDA) on the Cassini spacecraft. The impact ionization subsystem of the CDA is similar to the instruments on Ulysses and Galileo. As the heliocentric velocity and the direction of the interstellar dust flux are well known from Ulysses measurements, a combined analysis of the impact charge signals together with geometric and kinematic spacecraft data allowed us to separate interplanetary impacts from interstellar ones. The mean interstellar flux between 0.7 and 1.2 AU derived from our analysis is 2.5 +/- 0.5 . 10-5 m-2s-1, in a mass range of 5 . 10-17 kg to 10-15 kg which is in good agreement with the interstellar dust flux measured by Ulysses at 3 AU during the same time period [Landgraf et al., 2003]. The simultaneous detection of interstellar grains by Ulysses at 3 AU and approximately 1 AU by Cassini proves that big interstellar grains (radius greater than 0.4 μm), can penetrate deeply into the inner solar system.

Affiliated with

Also associated with

No associations

Rating

Cassini between Venus and Earth: Detection of interstellar dust does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cassini between Venus and Earth: Detection of interstellar dust, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cassini between Venus and Earth: Detection of interstellar dust will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1837087