Fix wording
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main.tex
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main.tex
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@ -131,11 +131,11 @@ code-for-last-col = \color{blue}
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\item Multi-connected space: it has non-contractable loops
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\item Inhomogeneous space: it does not look identical from every point in space
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\item Fixing $|\Gamma|=8$, we have three multi-connected manifolds, up to equivalence:
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\begin{enumerate}
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\item homogeneous: $N3$ and $L(8,1)$
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\item inhomogeneous: $N2 \equiv L(8,3)$
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\end{enumerate}
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\item Results: inhomogeneous spaces have more variety in CMB anisotropies than homogeneous spaces, because the strength of anisotropy suppression is observer dependent.
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\begin{enumerate}
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\item homogeneous: $N3$ and $L(8,1)$
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\item inhomogeneous: $N2 \equiv L(8,3)$
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\end{enumerate}
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\item Results: inhomogeneous spaces have more variety in CMB anisotropies than homogeneous spaces, because the strength of anisotropy suppression is observer dependent.
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\end{itemize}
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@ -159,19 +159,19 @@ code-for-last-col = \color{blue}
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\end{frame}
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\begin{frame}{The setup}
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Real CMB observations are affected by instrumental noise and \textit{sky masking}. So, estimating $C_\ell$ accurately requires simulations.
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Real CMB observations are affected by instrumental noise and \emph{sky masking}. As a result, estimating $C_\ell$ accurately requires simulations.
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Given $C^{th}_\ell$, used to generate synthetic realizations of the CMB sky
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\[
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\textcolor{blue}{a_{\ell m}} \sim \mathcal{N} (0, C_\ell^{\text{th}}).
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\]
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However, this introduces bias, which must be corrected using a decorrelation matrix $W$, and a \textit{sky mask} matrix $M$ which accounts for issues caused by masking effects.
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Giving us the test statistic (tests the assumption of statistical isotropy):
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Unfortunately, this introduces bias, which must be corrected using a decorrelation matrix $W$, and a \textit{sky mask} matrix $M$ which accounts for issues caused by masking effects. This gives us the test statistic (tests the assumption of statistical isotropy):
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\[
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S_i = \sum_{j} W_{ij} M_j,
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\]
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Which examines $\langle \textcolor{blue}{a_{\ell m}} \rangle$ across multipole ranges. \\
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which examines $\langle \textcolor{blue}{a_{\ell m}} \rangle$ across multipole ranges.
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\textbf{\textcolor{red}{Recall:}} $\langle a_{\ell m} \rangle \neq 0$, \textbf{suggests possible anisotropies or preferred directions in the universe}
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\end{frame}
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@ -182,6 +182,7 @@ code-for-last-col = \color{blue}
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\includegraphics[width=0.7\linewidth]{DSE-Test Graph}
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\caption{The decorrelated band mean spectrum obtained by the seven-year WMAP data [9].}
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\end{figure}
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\textcolor{red}{Remark}: In a positively curved space certain multipoles scales being preferred or suppressed in the CMB power spectrum.
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\end{frame}
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