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Multi-Probe Cluster Cosmology Analyses with Photometric Surveys.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Multi-Probe Cluster Cosmology Analyses with Photometric Surveys./
作者:	To, Chun-Hao.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	215 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-05, Section: B.
Contained By:	Dissertations Abstracts International83-05B.
標題:	Stars & galaxies. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28812871
ISBN:	9798494448132

Multi-Probe Cluster Cosmology Analyses with Photometric Surveys.
To, Chun-Hao.

Multi-Probe Cluster Cosmology Analyses with Photometric Surveys. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 215 p.

Source: Dissertations Abstracts International, Volume: 83-05, Section: B.

Thesis (Ph.D.)--Stanford University, 2021.

This item must not be sold to any third party vendors.

The universe we live in is expanding faster and faster. This phenomenon called cosmic acceleration is one of the most puzzling cosmological discoveries in the past 25 years: even the least exotic explanation requires a new pervasive energy component in our universe (called dark energy). Despite the mysterious nature of dark energy, a model (ΛCDM) based on Einstein's general relativity, a cosmological constant (a specific form of dark energy), and slowly moving dark matter, seems to be able to describe a variety of observations from the high- to low-redshift universe. To understand the nature of dark energy and to test the ΛCDM paradigm, ambitious cosmological surveys, such as the Dark Energy Survey (DES), the Dark Energy Spectroscopic Instrument (DESI), the Rubin Observatory's Legacy Survey of Space and Time (LSST), and the Roman Space Telescope, aim to precisely and robustly measure cosmic structure and its evolution via various cosmological probes, such as weak gravitational lensing, galaxy clustering, and other techniques.Combining multiple cosmological probes (known as multi-probe analyses) provides precise and robust cosmological constraints. Galaxy clustering, weak gravitational lensing, and abundances of galaxy clusters each are sensitive to different aspects of cosmic structure formation and are affected by different astrophysical and observational uncertainties. Thus, their combination is expected to be more precise and robust than any of the probe alone. Among these probes, the abundances and spatial distribution of galaxy clusters, which are associated with the highest peaks in the matter density field, provide powerful probes of cosmic structure and its evolution.This thesis presents original research that improves our understandings of the universe by observations of galaxy clusters. In the three self-contained projects, I (1) develop and validate methods for combining cluster abundances and two-point correlation functions, (2) perform the first blind cosmology analysis on combining cluster abundances, weak gravitational lensing, and galaxy clustering using data taken in the first season (DES-Y1) of the Dark Energy Survey, and (3) quantify the connections between red galaxies and their host dark matter halos by modeling luminosity functions of galaxies in galaxy clusters. While these three projects have already advanced our understandings of the cosmos, they also serve as an example of how one can use millions of clusters expected to be detected with the upcoming surveys in 2020s to improve our knowledge of the universe. These opportunities are also discussed in this thesis.

ISBN: 9798494448132Subjects--Topical Terms:

3683661
Stars & galaxies.

Multi-Probe Cluster Cosmology Analyses with Photometric Surveys.
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