Wuppertal 2015 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 6: Postersitzung
EP 6.6: Poster
Mittwoch, 11. März 2015, 16:45–18:45, Foyer Ebene G.10
Simulation of radar observation of cometary dust particles — •Shraddha Dogra1, Yevgen Grynko1, Evgenij Zubko2, and Jens Förstner1 — 1University of Paderborn, Warburger Str. 100, 33102 Paderborn, Germany — 2V.N. Karazin Kharkov National University, Kharkov, Sumskaya Str. 35, Ukraine
In this work we numerically simulate the backscattering circular polarization response from dust around the nucleus of comet 103P/Hartley 2 [1]. We use the Discrete Dipole Approximation (DDA) method and a model of irregular Gaussian random field particle shapes [2]. The computation has been done for a wavelength of 12.6 cm and a set of icy particles in the size range 1 < d < 100 cm. Our results confirm detection of large ~10 cm grains [1]. [1] J. K. Harmon et al. 2011, ApJ, 734 L2. [2] Y. Grynko and Y. Shkuratov, 2003, JQSRT, 319.