Aggregate model of cometary dust: an application to comet Levy 1990XX

Details Aggregate model of cometary dust: an application to comet Levy 1990XX Aggregate model of cometary dust: an application to comet Levy 1990XX

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mnras.389..787d&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 389, Issue 2, pp. 787-791.

Astronomy and Astrophysics

Astronomy

5

Polarization, Scattering, Comets: General, Dust, Extinction

Scientific paper

In the present work, the light-scattering properties of comet Levy 1990XX are studied through simulations using Ballistic Particle-Cluster Aggregation (BPCA) or Ballistic Cluster-Cluster Aggregation (BCCA) aggregates of up to 128 spherical monomers of different compositions (e.g. silicates, carbonaceous materials etc.) and the best-fitting theoretical polarization curve is generated using the SUPERPOSITION T-MATRIX code. The best-fitting refractive indices coming out from the present analysis show silicate behaviour when monomer radius is am = 0.12μm and provide excellent results on the maximum and negative degrees of linear polarization at a single wavelength λ = 0.485μm for BCCA aggregates.

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