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Three-dimensional infrared models of the interplanetary dust distribution


We have calculated the brightness of zodiacal emission by using the three dimensional optical models of zodiacal cloud. By comparing the calculated brightness distribution with the IRAS observations, we found that the cosine model is the best out of the three for describing the helioecliptic latitude dependence of dust distribution. We also found best parameters for the heliocentric variations of the dust temperature and volumetric absorption cross-section. Inclination and ascending node of the symmetry plane were deduced from annual variations of i) the peak offset latitude and ii) the pole brightness difference. Longitudes of the ascending node derived from i) and ii) are shown to be significantly different from each other.


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Correspondence to S. M. Kwon.

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Kwon, S.M., Hong, S.S. Three-dimensional infrared models of the interplanetary dust distribution. Earth Planet Sp 50, 501–505 (1998).

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  • Dust
  • Symmetry Plane
  • Ecliptic Plane
  • Ellipsoid Model
  • Dust Temperature