A comparison between polarimetric properties of cometary dust and interplanetary dust particles

Details A comparison between polarimetric properties of cometary dust and interplanetary dust particles A comparison between polarimetric properties of cometary dust and interplanetary dust particles

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...86..264l&link_type=abstract

Icarus (ISSN 0019-1035), vol. 86, July 1990, p. 264-272. Research supported by INSU.

Computer Science

17

Interplanetary Dust, Light Scattering, Linear Polarization, Meteoroid Dust Clouds, Polarimetry, Zodiacal Dust, Halley'S Comet, Phase Shift, Zodiacal Light, Comets, Dust, Comparisons, Polarimetry, Interplanetary Dust, Source, Particles, Polarization, Scattering, Zodiacal Light, Diagrams, Origin, Homogeneity, Idps, Decay, Grains, Position (Location)

Scientific paper

A comparison is presently conducted between the phase-angle dependence in the local polarization of interplanetary dust particles and the phase-angle dependence in the degree of polarization in cometary dust-scattered light; the latter has previously been noted to exhibit a negative branch, a neutral point near 21 deg, and an approximately linear increase up to 70 deg. While the polarization curves appear to be very similar once a partial inversion of zodiacal light polarization has been obtained, the decrease in interplanetary dust polarization with decreasing heliocentric distance in the ecliptic plane, and with increasing heliocentric latitude toward the ecliptic pole, indicate the presence of various dust particle populations in the zodiacal cloud, which slowely decay along their orbits.

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