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The meteoroid environment and impacts on Phobos

Christou, Apostolos A. and Oberst, Jürgen and Lupovka, V. and Dmitriev, V. and Gritsevich, M. (2014) The meteoroid environment and impacts on Phobos. Planetary and Space Science, 102, pp. 164-170. Elsevier. DOI: doi:10.1016/j.pss.2013.07.012 ISSN 0032-0633

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Official URL: http://www.sciencedirect.com/science/article/pii/S0032063313001918


We review current knowledge of the flux of meteoroids on Phobos, a key to interpreting its cratering record and understanding the origin of the Martian satellite system. Past observational attempts to estimate the flux of small (mm to cm) meteoroids as meteors in the Martian atmosphere highlight the need for customised instrumentation onboard future missions bound for Mars. The temporal distribution of cometary meteoroid streams as predicted by recent work is non-uniform; we advocate emplacing seismic stations on Phobos or cameras optimised to monitor the Martian atmosphere for meteors as a means to elucidate this and other features of the meteoroid population. We construct a model of the sporadic flux of metre-sized or larger meteoroids and use it to predict a leading/trailing ratio in crater density of ~4~4 if crater production by asteroidal meteoroids dominates over that by cometary ones. It is found that the observed distribution of craters ≥100m as determined from spacecraft images is consistent with a 50/50 contribution from the two meteoroid populations in our model. A need for more complete models of the meteoroid flux is identified. Finally, the prospects for new observational constraints on the meteoroid environment are reviewed.

Item URL in elib:https://elib.dlr.de/94203/
Document Type:Article
Title:The meteoroid environment and impacts on Phobos
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Christou, Apostolos A.Armagh Observatory, College Hill, Armagh BT61 9DG, Northern Ireland, UKUNSPECIFIED
Oberst, Jürgenjuergen.oberst (at) dlr.deUNSPECIFIED
Lupovka, V.Moscow State University of Geodesy and Cartography (MIIGAiK), Gorokhovskiy per., 4, 105064, Moscow, RussiaUNSPECIFIED
Dmitriev, V.Moscow State University of Geodesy and Cartography (MIIGAiK), Gorokhovskiy per., 4, 105064, Moscow, RussiaUNSPECIFIED
Gritsevich, M.Ural Federal University, Institute of Physics and Technology, Department of Physical Methods and Devices for Quality Control, Mira ul. 19, 620002 Ekaterinburg, RussiaUNSPECIFIED
Date:1 November 2014
Journal or Publication Title:Planetary and Space Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :doi:10.1016/j.pss.2013.07.012
Page Range:pp. 164-170
Series Name:Phobos
Keywords:Meteoroids, Phobos, Impact cratering, Comets, Asteroids
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt MARS-EXPRESS / HRSC
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geodesy
Deposited By: Wählisch, Marita
Deposited On:07 Jan 2015 10:27
Last Modified:08 Mar 2018 18:48

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