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Krzysztof Bolejko

Cosmologist, University of Tasmania

I am a cosmologist interested in non-linear aspects of the evolution of the Universe and light propagation effects. My work focuses on tracing signatures of structures in the Universe, and studying how they affect cosmological observations.

Observing the Universe is like looking through a tank of water. In both cases observed images are distorted. In both cases the amplitude of distortions can be used to measure properties of the medium – for example an image of an object located behind a transparent tank full of water will be different when the water's temperature is 95°C than in the case when it is 5°C. Similarly, an image of a distant galaxy varies depending if its light have passed close to a large cluster of galaxies or if its light rays traversed through a cosmic void

In my work, I look for all kinds of distortions in images of far away objects, and by analysing these distortions I can study properties of our Universe.


  • 2018–present
    Senior lecturer, University of Tasmania
  • 2015–2018
    ARC Future Fellow, The University of Sydney
  • 2012–2014
    The University of Sydney Postdoctoral Fellow, The University of Sydney
  • 2011–2012
    Marie Curie Fellow, University of Oxford,
  • 2010–2010
    Fulbright Fellow, University of Arizona
  • 2007–2010
    Research Fellow, Polish Academy of Sciences
  • 2010–2010
    Group of Eight Fellow, Australian National University
  • 2009–2010
    Vice-Chancellor's Postdoctoral Fellow, University of Cape Town
  • 2008–2008
    Peter and Patricia Gruber Foundation & IAU Postdoctoral Fellow, The University of Melbourne


  • 2007 
    Polish Academy of Sciences, PhD
  • 2004 
    University of Warsaw, Master of Science


  • 2014
    34 peer review articles in PRL, PRD, JCAP, MNRAS, A&A, CQG, GRG, PLB, 2005-
  • 2009
    Structures in the Universe by exact methods - formation, evolution, interactions, Cambridge University Press

Professional Memberships

  • International Society on General Relativity and Gravitation
  • Astronomical Society of Australia
  • Polish Astronomical Society

Research Areas

  • Cosmology And Extragalactic Astronomy (020103)
  • General Relativity And Gravitational Waves (020105)
  • Astronomical And Space Sciences (0201)