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Probing the High-Redshift Universe Using Fluctuations in the Cosmic Microwave and Infrared Backgrounds.

机译:使用宇宙微波和红外背景下的涨落来探测高红移宇宙。

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摘要

Background (CIB) continues to be one of the best probes of physics at the early stages of the universe. If the CMB were a purely Gaussian field, all statistical information would be contained in the power spectrum or two-point correlation function. However, non-Gaussianities ensure that new physics may be extracted from higher n-point correlation functions including the bispectrum and trispectrum of the CMB. In this thesis discuss new estimators we have formulated to probe primordial non-Gaussianity in the bispectrum and trispectrum of CMB data and the constraints we have made using WMAP data while discussing implications for inflationary models. I discuss how these same methods may be used to probe CMB Lensing. Finally, I discuss how upcoming measurements of near and far-infrared CIB fluctuations may be used to constrain the redshift of reionization and clustering of various populations of galaxies. Some preliminary results involving CANDELS, Spitzer SDWFS, CIBER and Herschel datasets is presented.
机译:背景技术(CIB)仍然是宇宙早期对物理的最好探索之一。如果CMB是纯高斯场,则所有统计信息都将包含在功率谱或两点相关函数中。然而,非高斯性确保可以从更高的n点相关函数(包括CMB的双谱和三谱)中提取新的物理学。在本文中,我们讨论了新的估计量,我们在探讨CMB数据的双谱和三谱中的原始非高斯性以及我们在讨论通货膨胀模型的含义时使用WMAP数据所做的约束时探讨了这些估计。我将讨论如何使用这些相同的方法来探测CMB Lensing。最后,我讨论了即将到来的近红外和远红外CIB波动的测量结果可如何用于约束不同星系群体的电离和聚类的红移。提出了一些涉及CANDELS,Spitzer SDWFS,CIBER和Herschel数据集的初步结果。

著录项

  • 作者

    Smidt, Joseph Michael.;

  • 作者单位

    University of California, Irvine.;

  • 授予单位 University of California, Irvine.;
  • 学科 Physics Astrophysics.;Physics General.
  • 学位 Ph.D.
  • 年度 2012
  • 页码 217 p.
  • 总页数 217
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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