The role of angular momentum in dark matter halo formation and evolution

Jie Li

Research output: ThesisDoctoral Thesis

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Abstract

Understanding of angular momentum (AM) of dark matter haloes can assist in comprehending the origin of the spin of galaxies. Hydrodynamical simulations have revealed that gas has a specific AM(sAM) 2-3 times higher than that of DM within virialised haloes. This challenges the common assumption that gas and DM share identical sAM in the theoretical framework. This thesis develops an ellipsoid collapse model that successfully elucidates the excess sAM of gas as a result of AM transfer from DM to gas. Furthermore, the study investigates major mergers to explain the variation of the sAM ratio between gas and DM.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Obreschkow, Danail, Supervisor
  • Power, Chris, Supervisor
  • Lagos Urbina, Claudia, Supervisor
Award date5 Mar 2024
DOIs
Publication statusUnpublished - 2023

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