---
_id: '3523'
abstract:
- lang: eng
  text: 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.
article_type: original
author:
- first_name: Shraddha
  full_name: Dogra, Shraddha
  last_name: Dogra
- first_name: Yevgen
  full_name: Grynko, Yevgen
  id: '26059'
  last_name: Grynko
- first_name: Evgenij
  full_name: Zubko, Evgenij
  last_name: Zubko
- first_name: Jens
  full_name: Förstner, Jens
  id: '158'
  last_name: Förstner
  orcid: 0000-0001-7059-9862
citation:
  ama: 'Dogra S, Grynko Y, Zubko E, Förstner J. Radar backscattering from a large-grain
    cometary coma: numerical simulation. <i>Astronomy &#38; Astrophysics</i>. 2017;608:A20.
    doi:<a href="https://doi.org/10.1051/0004-6361/201730801">10.1051/0004-6361/201730801</a>'
  apa: 'Dogra, S., Grynko, Y., Zubko, E., &#38; Förstner, J. (2017). Radar backscattering
    from a large-grain cometary coma: numerical simulation. <i>Astronomy &#38; Astrophysics</i>,
    <i>608</i>, A20. <a href="https://doi.org/10.1051/0004-6361/201730801">https://doi.org/10.1051/0004-6361/201730801</a>'
  bibtex: '@article{Dogra_Grynko_Zubko_Förstner_2017, title={Radar backscattering
    from a large-grain cometary coma: numerical simulation}, volume={608}, DOI={<a
    href="https://doi.org/10.1051/0004-6361/201730801">10.1051/0004-6361/201730801</a>},
    journal={Astronomy &#38; Astrophysics}, publisher={EDP Sciences}, author={Dogra,
    Shraddha and Grynko, Yevgen and Zubko, Evgenij and Förstner, Jens}, year={2017},
    pages={A20} }'
  chicago: 'Dogra, Shraddha, Yevgen Grynko, Evgenij Zubko, and Jens Förstner. “Radar
    Backscattering from a Large-Grain Cometary Coma: Numerical Simulation.” <i>Astronomy
    &#38; Astrophysics</i> 608 (2017): A20. <a href="https://doi.org/10.1051/0004-6361/201730801">https://doi.org/10.1051/0004-6361/201730801</a>.'
  ieee: 'S. Dogra, Y. Grynko, E. Zubko, and J. Förstner, “Radar backscattering from
    a large-grain cometary coma: numerical simulation,” <i>Astronomy &#38; Astrophysics</i>,
    vol. 608, p. A20, 2017.'
  mla: 'Dogra, Shraddha, et al. “Radar Backscattering from a Large-Grain Cometary
    Coma: Numerical Simulation.” <i>Astronomy &#38; Astrophysics</i>, vol. 608, EDP
    Sciences, 2017, p. A20, doi:<a href="https://doi.org/10.1051/0004-6361/201730801">10.1051/0004-6361/201730801</a>.'
  short: S. Dogra, Y. Grynko, E. Zubko, J. Förstner, Astronomy &#38; Astrophysics
    608 (2017) A20.
date_created: 2018-07-10T10:19:01Z
date_updated: 2022-01-06T06:59:21Z
ddc:
- '530'
department:
- _id: '61'
doi: 10.1051/0004-6361/201730801
file:
- access_level: open_access
  content_type: application/pdf
  creator: hclaudia
  date_created: 2018-08-14T10:17:27Z
  date_updated: 2018-09-03T14:05:33Z
  file_id: '3903'
  file_name: 2017-10 Dogra,Grynko,Zubko,Förstner_Radar backscattering from large scale
    cometary coma-Numerical simulation_Astronomy and Astrophysics.pdf
  file_size: 1206283
  relation: main_file
file_date_updated: 2018-09-03T14:05:33Z
has_accepted_license: '1'
intvolume: '       608'
keyword:
- tet_topic_scattering
language:
- iso: eng
oa: '1'
page: A20
publication: Astronomy & Astrophysics
publication_identifier:
  issn:
  - 0004-6361
  - 1432-0746
publication_status: published
publisher: EDP Sciences
status: public
title: 'Radar backscattering from a large-grain cometary coma: numerical simulation'
type: journal_article
urn: '35230'
user_id: '158'
volume: 608
year: '2017'
...