東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Cosmology in the Nonlinear Regime wi...

Liu, Jia.

FindBook

Google Book

Amazon

博客來

Cosmology in the Nonlinear Regime with Weak Gravitational Lensing.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Cosmology in the Nonlinear Regime with Weak Gravitational Lensing./
作者:	Liu, Jia.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
面頁冊數:	161 p.
附註:	Source: Dissertation Abstracts International, Volume: 77-12(E), Section: B.
Contained By:	Dissertation Abstracts International77-12B(E).
標題:	Astronomy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10128513
ISBN:	9781339865256

Cosmology in the Nonlinear Regime with Weak Gravitational Lensing.
Liu, Jia.

Cosmology in the Nonlinear Regime with Weak Gravitational Lensing. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 161 p.

Source: Dissertation Abstracts International, Volume: 77-12(E), Section: B.

Thesis (Ph.D.)--Columbia University, 2016.

This thesis investigates weak lensing (WL) of galaxies and the cosmic microwave back- ground (CMB) in the nonlinear regime. WL describes the effect of bending of background light rays by foreground matter ("lens"). It is sensitive to the large scale structure of the universe, and hence is a promising method to answer some unsolved fundamental questions in physics, such as the nature of dark energy and the total mass of neutrinos. WL datasets of unprecedented precision will come on-line in the early 2020s. This presents an exciting yet challenging task for the WL community: how do we extract the maximum amount of information from lensing observables, while minimizing the impact of systematics?

ISBN: 9781339865256Subjects--Topical Terms:

517668
Astronomy.

Cosmology in the Nonlinear Regime with Weak Gravitational Lensing.
LDR:02643nmm a2200325 4500 001 2161243
005 20180823122923.5
008 190424s2016 ||||||||||||||||| ||eng d
020 $a 9781339865256
035 $a (MiAaPQ)AAI10128513
035 $a (MiAaPQ)columbia:13435
035 $a AAI10128513
040 $a MiAaPQ $c MiAaPQ
100 1 $a Liu, Jia. $3 2095876
245 1 0 $a Cosmology in the Nonlinear Regime with Weak Gravitational Lensing.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2016
300 $a 161 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-12(E), Section: B.
500 $a Adviser: Zoltan Haiman.
502 $a Thesis (Ph.D.)--Columbia University, 2016.
520 $a This thesis investigates weak lensing (WL) of galaxies and the cosmic microwave back- ground (CMB) in the nonlinear regime. WL describes the effect of bending of background light rays by foreground matter ("lens"). It is sensitive to the large scale structure of the universe, and hence is a promising method to answer some unsolved fundamental questions in physics, such as the nature of dark energy and the total mass of neutrinos. WL datasets of unprecedented precision will come on-line in the early 2020s. This presents an exciting yet challenging task for the WL community: how do we extract the maximum amount of information from lensing observables, while minimizing the impact of systematics?
520 $a This work attempts to answer this question by studying non-Gaussian statistics. Traditionally, WL data are analyzed using second-order statistics, which capture all the cosmological information if the density field is Gaussian. However, the small-scale density fluctuations are strongly non-Gaussian and can be highly sensitive to cosmology. Thus we need higher order (non-Gaussian) statistics to utilize these features in the nonlinear regime. In this thesis, we study the constraining power on cosmology and relevant systematics of non-Gaussian statistics, with a focus on convergence peaks. We present the first cosmological constraints using peak counts of the CFHTLenS survey. We also quantify the impact of magnification and size bias, one type of lensing systematics, on the lensing power spectrum and peaks. Finally, going beyond galaxy lensing, we cross-correlate Planck CMB lensing maps with CFHTLenS galaxy lensing maps, to investigate various WL systematics.
590 $a School code: 0054.
650 4 $a Astronomy. $3 517668
650 4 $a Astrophysics. $3 535904
650 4 $a Physics. $3 516296
690 $a 0606
690 $a 0596
690 $a 0605
710 2 $a Columbia University. $b Astronomy. $3 3179988
773 0 $t Dissertation Abstracts International $g 77-12B(E).
790 $a 0054
791 $a Ph.D.
792 $a 2016
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10128513