Faculté des Sciences
Faculté des Sciences

Hypervelocity Impact Modelling. Impact Craters and Gravitation on the Didymos Asteroid's Moonlet Dimorphos

Bau, Sébastien ULiège
Promotor(s) : Karatekin, Ozgur ; Grodent, Denis ULiège
Date of defense : 7-Sep-2023/8-Sep-2023 • Permalink :
Title : Hypervelocity Impact Modelling. Impact Craters and Gravitation on the Didymos Asteroid's Moonlet Dimorphos
Author : Bau, Sébastien ULiège
Date of defense  : 7-Sep-2023/8-Sep-2023
Advisor(s) : Karatekin, Ozgur 
Grodent, Denis ULiège
Committee's member(s) : Senel, Cem Berk 
Rauw, Grégor ULiège
Language : English
Number of pages : 65
Keywords : [en] iSALE
[en] DART
[en] Hera
Discipline(s) : Physical, chemical, mathematical & earth Sciences > Space science, astronomy & astrophysics
Name of the research project : Hypervelocity impact modelling of the solar system bodies
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master en sciences spatiales, à finalité spécialisée
Faculty: Master thesis of the Faculté des Sciences


[en] After the DART mission in September 2022 and the upcoming ESA Hera mission, it is important to study the target of the impact, Dimorphos. With 2D hypervelocity impact simulations using the iSALE shock physics hydro-code we simulated 9 different cases with varying asteroid cohesion and porosity. The results were used to create 3D models of the crater on Dimorphos and used to compute the gravitational potential of the impacted body using a polyhedron gravity model. The data was then imported into the Small Body Mapping Tool as a colour map. This shows the feasibility of combining 2D impact simulations to 3D gravity computations of a small body.



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  • Bau, Sébastien ULiège Université de Liège > Master sc. spatiales, à fin.


Committee's member(s)

  • Senel, Cem Berk VKI, ORB
  • Rauw, Grégor ULiège Université de Liège - ULiège > Groupe d'astrophysique des hautes énergies (GAPHE)
    ORBi View his publications on ORBi
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  • Total number of downloads 53

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