@article{3523,
  abstract     = {{We numerically simulate the circular polarization ratio of the radar signal backscattered from a large-grain cometary coma and compare the simulation results with the radar measurements for seven comets. We apply the discrete dipole approximation method and a model of random irregular particles. Our results confirm water ice composition of the cm-sized chunks detected by the NASA Deep Impact space probe in the vicinity of the nucleus of Comet 103P/Hartley 2. The index of the power-law size distribution in this case can be constrained to the range n ≈ 3.3–4.3. For the other considered comets the circular polarization ratio can be reproduced with variations of the power index between 2 and 5.}},
  author       = {{Dogra, Shraddha and Grynko, Yevgen and Zubko, Evgenij and Förstner, Jens}},
  issn         = {{0004-6361}},
  journal      = {{Astronomy & Astrophysics}},
  keywords     = {{tet_topic_scattering}},
  pages        = {{A20}},
  publisher    = {{EDP Sciences}},
  title        = {{{Radar backscattering from a large-grain cometary coma: numerical simulation}}},
  doi          = {{10.1051/0004-6361/201730801}},
  volume       = {{608}},
  year         = {{2017}},
}