\documentclass[12pt,twoside]{report}
\usepackage[utf8]{inputenc}
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\usepackage{acronym}
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\usepackage{xcolor}
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\usepackage{bm}
\usepackage{etoolbox}
\usepackage[inline]{enumitem} % To enumerate within a single line
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\usepackage{fancyhdr}
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\fancyhead[LE,RO]{\itshape \nouppercase \rightmark}
\fancyhead[LO,RE]{\itshape \nouppercase Chapter \arabic{chapter}}
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\usepackage{hyperref}
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\usepackage{datetime}
\usepackage[inline]{enumitem} % To enumerate within a single line
\usepackage{amssymb} % Extra maths symbols
\usepackage{bm}
\usepackage{hyperref}
\usepackage[square,numbers]{natbib}
\acrodef{DNS}{double neutron star}
\acrodefplural{DNS}[DNSs]{double neutron stars}
\acrodef{HR}{Hertzsprung-Russell}
\def\apj{Astrophys.~J.}
\def\mnras{Mon.~Not.~R.~Astron.~Soc.}
\def\aapr{Astron.~Astrophys.~Rev.}
\newdateformat{monthyeardate}{%
\monthname[\THEMONTH], \THEYEAR}
\usepackage{arydshln}
\usepackage{filecontents}
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\graphicspath{ {Figures/}, {Figures/Introduction/}}
\begin{document}
\input{TitlePage}
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\include{Abstract}
\include{Dedication}
\include{Acknowledgements}
\tableofcontents
\setlength{\parskip}{18pt}
\addcontentsline{toc}{chapter}{List of Figures}
\listoffigures
\addcontentsline{toc}{chapter}{List of Tables}
\listoftables
\clearpage
\pagestyle{fancy}
\fancyhead[LO,LE]{\nouppercase{\rightmark}}
\pagenumbering{arabic}
\chapter{Introduction}
\label{chap:introduction}
\input{Chapters/Chapter1}
\chapter{Paper I}
\label{chap:2}
\input{Chapters/Chapter2}
\chapter{Conclusions}
\label{chap:conclusions}
\input{Chapters/Chapter3}
\clearpage
\appendix
\label{chap:appendix}
\input{Chapters/Appendices}
\clearpage
\addcontentsline{toc}{chapter}{Bibliography}
\bibliography{thesis}
\bibliographystyle{abbrv}
\end{document}
