The connection between atomic hydrogen, galaxies and dark matter in galaxy formation simulations

Garima Chauhan

doi:10.26182/ybpe-9b43

The connection between atomic hydrogen, galaxies and dark matter in galaxy formation simulations

Garima Chauhan

School of Physics, Mathematics and Computing

Research output: Thesis › Doctoral Thesis

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Abstract

In this thesis, we explore the connection between dark matter, galaxies and atomic hydrogen (HI) in galaxy formation simulations. For this, we use the semi-analytic model, SHARK, linking it to observations by forward-modelling our simulated galaxies to consider the strong selection effects that HI-surveys suffer from. We next investigate the effect different physical processes have on the total HI content of haloes and develop a numerical model that can populate haloes in dark matter-only simulations with HI. Lastly, we test and compare different observational techniques that measure the HI content of dark matter haloes with our simulations and each other.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Lagos Urbina, Claudia, Supervisor Stevens, Adam, Supervisor Power, Chris, Supervisor
Award date	18 May 2021
DOIs	https://doi.org/10.26182/ybpe-9b43
Publication status	Unpublished - 2020

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10.26182/ybpe-9b43

THESIS - DOCTOR OF PHILOSOPHY - CHAUHAN Garima - 2020
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title = "The connection between atomic hydrogen, galaxies and dark matter in galaxy formation simulations",

abstract = "In this thesis, we explore the connection between dark matter, galaxies and atomic hydrogen (HI) in galaxy formation simulations. For this, we use the semi-analytic model, SHARK, linking it to observations by forward-modelling our simulated galaxies to consider the strong selection effects that HI-surveys suffer from. We next investigate the effect different physical processes have on the total HI content of haloes and develop a numerical model that can populate haloes in dark matter-only simulations with HI. Lastly, we test and compare different observational techniques that measure the HI content of dark matter haloes with our simulations and each other.",

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AB - In this thesis, we explore the connection between dark matter, galaxies and atomic hydrogen (HI) in galaxy formation simulations. For this, we use the semi-analytic model, SHARK, linking it to observations by forward-modelling our simulated galaxies to consider the strong selection effects that HI-surveys suffer from. We next investigate the effect different physical processes have on the total HI content of haloes and develop a numerical model that can populate haloes in dark matter-only simulations with HI. Lastly, we test and compare different observational techniques that measure the HI content of dark matter haloes with our simulations and each other.

KW - galaxies

KW - HI

KW - dark matter

KW - simulations

KW - radio surveys

U2 - 10.26182/ybpe-9b43

DO - 10.26182/ybpe-9b43

M3 - Doctoral Thesis

ER -

The connection between atomic hydrogen, galaxies and dark matter in galaxy formation simulations

Abstract

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