This chapter explores how physical properties of cometary dust (size distribution,
composition, and grain structure) can be obtained from characteristics of the electromagnetic …

We have measured the scattering matrix as a function of the scattering angle of randomly
oriented particles of a Mg-rich olivine sample and a ground piece of Allende meteorite as …

Polarimetric observations of the light scattered by dust in cometary comae have been carried
out at Pic-du-Midi Observatory and at Haute-Provence Observatory (France) between 1990 …

The dust particles in different comets exhibit generally similar scattering properties.
Polarization is characterized by a small negative branch at scattering angles θ> 160° and a …

The investigation of asteroids near the Sun is important for understanding the final
evolutionary stage of primitive Solar system objects. A near-Sun asteroid (NSA),(155140) …

Polarimetric phase curves were obtained with the PROGRA2 instrument for different
particles: glass beads, polyhedral solids, rough particles, dense aggregates and aggregates …

Comet C/1995 O1 (Hale-Bopp) has been observed over a large range of phase angles (7°–
47°) by the imaging polarimetric method from June 1996 to April 1997. Polarization maps …

During the last century, the presence of icy particles throughout the universe has been
confirmed by numerous ground and space based observations. Ultrathin icy layers are …

This work was carried out with the PROGRA2 experiment developed to measure the angular
dependence of the polarization of light scattered by dust particles. The dust samples are …

While remote observations of the linear polarization of five low-albedo near-Earth asteroids
are available at large phase angles, space missions have collected materials from the …