Neutral Hydrogen and Dark Matter in the Universe

Qingxiang Chen

doi:10.26182/m7bx-v671

Neutral Hydrogen and Dark Matter in the Universe

Qingxiang Chen

Research output: Thesis › Doctoral Thesis

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Abstract

This thesis examines two suites of dark-matter-only simulations, at galaxy cluster and Milky Way scales, and compares their mass growth. Merger modes are found to be consistent, but with different inner structures. The thesis also presents a new technique for studying the neutral hydrogen gas content of distant galaxies, with the method applied to data from the DINGOVLA survey and a new measurement made of the cosmic gas density at z less than 0.1. The method is developed with future SKA-like interferometers in mind.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Meyer, Martin, Supervisor Popping, Attila, Supervisor Staveley-Smith, Lister, Supervisor Wang, Jie, Supervisor
Award date	19 Oct 2020
DOIs	https://doi.org/10.26182/m7bx-v671
Publication status	Unpublished - 2020

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10.26182/m7bx-v671

THESIS - DOCTOR OF PHILOSOPHY - CHEN Qingxiang - 2020
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Cite this

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title = "Neutral Hydrogen and Dark Matter in the Universe",

abstract = "This thesis examines two suites of dark-matter-only simulations, at galaxy cluster and Milky Way scales, and compares their mass growth. Merger modes are found to be consistent, but with different inner structures. The thesis also presents a new technique for studying the neutral hydrogen gas content of distant galaxies, with the method applied to data from the DINGOVLA survey and a new measurement made of the cosmic gas density at z less than 0.1. The method is developed with future SKA-like interferometers in mind.",

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AB - This thesis examines two suites of dark-matter-only simulations, at galaxy cluster and Milky Way scales, and compares their mass growth. Merger modes are found to be consistent, but with different inner structures. The thesis also presents a new technique for studying the neutral hydrogen gas content of distant galaxies, with the method applied to data from the DINGOVLA survey and a new measurement made of the cosmic gas density at z less than 0.1. The method is developed with future SKA-like interferometers in mind.

KW - cosmology

KW - galaxies

KW - interstellar medium

KW - radio lines

KW - star formation

KW - neutral hydrogen atoms

U2 - 10.26182/m7bx-v671

DO - 10.26182/m7bx-v671

M3 - Doctoral Thesis

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Neutral Hydrogen and Dark Matter in the Universe

Abstract

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