TERRAPUB Earth, Planets and Space

Earth Planets Space, Vol. 62 (No. 1), pp. 47-52, 2010

Scattering parameterization for interpreting asteroid polarimetric and photometric phase effects

Karri Muinonen1, Jani Tyynelä2, Evgenij Zubko 3,4, and Gorden Videen5

1Observatory, P.O. Box 14, FI-00014 University of Helsinki, Finland
2Department of Physics, P.O. Box 64, FI-00014 University of Helsinki, Finland
3Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, Aoba, Aramakiaza, Aoba-ku, Sendai 980-8578, Japan
4Astronomical Institute, Kharkov National University, 35 Sumskaya Street, Kharkov 61022, Ukraine
5Army Research Laboratory, CI-ES, 2800 Powder Mill Road, Adelphi, Maryland 20783, U.S.A.

(Received September 5, 2008; Revised January 20, 2009; Accepted January 23, 2009; Online published February 12, 2010)

Abstract: We derive an analytical parameterization of the amplitude and Mueller scattering matrices of a system composed of a small number of electric dipoles. The appeal of this derivation is that it provides a wide range of light-scattering polarization states with a minimal number of parameters. Such a tool can be used to interpret observations in terms of physical parameters. We aim to utilize these results in multiple-scattering studies, such as the interpretation of polarimetric and photometric phase effects of asteroids and other atmosphereless solar-system objects.
Key words: Light scattering, coherent backscattering, photometry, polarimetry, cosmic dust, small particle, negative polarization, opposition effect.

Corresponding author E-mail: karri.muinonen@helsinki.fi

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