Hunting dark matter with X-rays

Leiden Repository

Hunting dark matter with X-rays

Type: Doctoral Thesis
Title: Hunting dark matter with X-rays
Author: Franse, J.
Journal Title: Casimir PhD Series
Issue Date: 2016-12-20
Keywords: Cosmology
Dark matter
Sterile neutrino
Abstract: The nature of the Dark Matter is one of the biggest open questions in modern cosmology and particle physics. The work in this thesis concerns a search for the observational effects of one particular class of hypothetical Dark Matter particles, namely those that are allowed to decay. In decaying, X-ray photons are emitted and should be observable. One part of the thesis details the discovery of a potential Dark Matter decay signal in X-ray spectra of galaxies and galaxy clusters, and the subsequent efforts to identify its origin. To this end archival data and new observations are compared to the respective Dark Matter masses of the observed objects. Interpretations of the signal as an instrumental effect, or due to regular astrophysical processes are unsatisfactory. Although the Dark Matter interpretation remains plausible, definitive conclusions about the origin of the signal can not be drawn yet and will require measurements by next generation observatories. The last chapter of the thesis contains the proof-of-concept of a novel technique to search for such weak signals that combines increased statistical power with the ability to determine the physical origin of a signal, while avoiding some of the disadvantages of traditional methods.
Promotor: Supervisor: A. Achúcarro Co-Supervisor: A. Boyarsky
Faculty: Faculty of Science
Uri: urn:isbn:9789085932796

Files in this item

Description Size View
application/pdf Full Text 4.572Mb View/Open
application/pdf Cover 22.76Mb View/Open
application/pdf Title page_Contents 160.5Kb View/Open
application/pdf Chapter 1 476.7Kb View/Open
application/pdf Chapter 2 704.7Kb View/Open Full text at publisher site
application/pdf Chapter 3 503.3Kb View/Open Full text at publisher site
application/pdf Chapter 4 1.464Mb View/Open Full text at publisher site
application/pdf Chapter 5 2.431Mb View/Open
application/pdf Chapter 6 320.1Kb View/Open
application/pdf Chapter 7 148.9Kb View/Open
application/pdf Bibliography_Publications_CV_Acknowledgements 200.5Kb View/Open
application/pdf Propositions 119.5Kb View/Open

This item appears in the following Collection(s)