© 2016

Optimized Dark Matter Searches in Deep Observations of Segue 1 with MAGIC


Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xxxvii
  2. Jelena Aleksić
    Pages 1-24
  3. Jelena Aleksić
    Pages 25-52
  4. Jelena Aleksić
    Pages 53-85
  5. Jelena Aleksić
    Pages 87-107
  6. Jelena Aleksić
    Pages 169-175
  7. Back Matter
    Pages 177-184

About this book


This thesis presents the results of indirect dark matter searches in the gamma-ray sky of the near Universe, as seen by the MAGIC Telescopes. The author has proposed and led the 160 hours long observations of the dwarf spheroidal galaxy Segue 1, which is the deepest survey of any such object by any Cherenkov telescope so far. Furthermore, she developed and completely characterized a new method, dubbed “Full Likelihood”, that optimizes the sensitivity of Cherenkov instruments for detection of gamma-ray signals of dark matter origin. Compared to the standard analysis techniques, this novel approach introduces a sensitivity improvement of a factor of two (i.e. it requires 4 times less observation time to achieve the same result). In addition, it allows a straightforward merger of results from different targets and/or detectors.

By selecting the optimal observational target and combining its very deep exposure with the Full Likelihood analysis of the acquired data, the author has improved the existing MAGIC bounds to the dark matter properties by more than one order of magnitude. Furthermore, for particles more massive than a few hundred GeV, those are the strongest constraints from dwarf galaxies achieved by any gamma-ray instrument, both ground-based or space-borne alike.


Cherenkov telescopes Dark matter search Dwarf spheroidal galaxies Full Likelihood method Gamma-ray astronomy Indirect dark matter searches MAGIC Telescopes Segue 1

Authors and affiliations

  1. 1.Ed. Cn. Campus UABEdifici Cn. Univ Autònoma de BarcelonaBellaterra (Barcelona)Spain

About the authors

Jelena Aleksić received her PhD from Universitat Autònoma de Barcelona in 2013 for her work with the MAGIC Telescopes. She is currently Postdoctoral Fellow at the Institut de Fisica d’Altes Energies (Barcelona) and member of the Dark Energy Survey (DES) Collaboration.

Bibliographic information