Kossacki, K. and Spohn, Tilman and Hagermann, A. and Kaufmann, E. and Kührt, E. (2015) Comet 67P/Churyumov-Gerasimenko: Hardening of the subsurface layer. Icarus: International Journal of Solar System Studies, 260, pp. 464-474. Elsevier. doi: 10.1016/j.icarus.2015.07.024. ISSN 0019-1035.
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Abstract
From the operation of the MUPUS thermal probe Spohn et al. (2015) concluded that the material of the nucleus of 67P/Churyumov–Gerasimenko is likely to have a high strength, at least locally at the Philae landing site. In this work we consider the derived strength of the material in order to constrain its granulation. For this purpose we performed numerical simulations of the long-term sintering of ice–dust granular mixtures of different granulation, covered by a dust mantle. The dust mantle has a thickness of 0–16 cm, and a (pore size and temperature-dependent) thermal conductivity. According to our simulations a hardened layer at least a meter thick forms beneath the dust only when the grains are tens of microns in radius, or smaller.
Item URL in elib: | https://elib.dlr.de/98122/ | ||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||
Title: | Comet 67P/Churyumov-Gerasimenko: Hardening of the subsurface layer | ||||||||||||||||||||||||
Authors: |
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Date: | 2015 | ||||||||||||||||||||||||
Journal or Publication Title: | Icarus: International Journal of Solar System Studies | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||
Volume: | 260 | ||||||||||||||||||||||||
DOI: | 10.1016/j.icarus.2015.07.024 | ||||||||||||||||||||||||
Page Range: | pp. 464-474 | ||||||||||||||||||||||||
Editors: |
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Publisher: | Elsevier | ||||||||||||||||||||||||
ISSN: | 0019-1035 | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | Churyumov-Gerasimenko, thermische Modellierung, sintern | ||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||||||||
HGF - Program Themes: | Space Exploration | ||||||||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||
DLR - Program: | R EW - Space Exploration | ||||||||||||||||||||||||
DLR - Research theme (Project): | R - Project ROSETTA Instruments (old) | ||||||||||||||||||||||||
Location: | Berlin-Adlershof | ||||||||||||||||||||||||
Institutes and Institutions: | Institute of Planetary Research | ||||||||||||||||||||||||
Deposited By: | Spohn, Tilman | ||||||||||||||||||||||||
Deposited On: | 09 Sep 2015 11:20 | ||||||||||||||||||||||||
Last Modified: | 04 Jul 2023 14:40 |
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