Physics
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998exdu.work...85m&link_type=abstract
Exozodiacal Dust Workshop, p. 85
Physics
1
In Situ Measurement, Zodiacal Light, Zodiacal Dust, Solar System, Brightness, Polarimeters, Helios Satellites, Pioneer 10 Space Probe, Pioneer 11 Space Probe, Ulysses Mission, Impact Velocity, Size Distribution
Scientific paper
In Situ experiments on space craft yield information about dust parameters such as velocity, flux and size, and mass of particles. In Situ experiments as well as brightness measurements in the inner solar system have been made with Helios from .3 to 1 AU in the ecliptic plane which reveal two different dust populations with different bulk densities and relative velocities to the spacecraft. Zodiacal light measurements from Helios 1 and 2 reveal a radial brightness gradient proportional to R-2.3. Measurements of dust particles in the outer solar system have been made onboard the Pioneer 10 and 11 spacecraft and for the high latitude region with Ulysses. Pioneer 10 and 11 also carried a spin-scan photopolarimeter that was used to map the zodiacal light and background starlight during the cruise to Jupiter in two broad bandpasses centered at .44 and .64 micron. Details of these measurements are briefly discussed.
Hanner Martha
Mann Ingrid
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