Dr Krzysztof Bolejko

A28 - Physics Building
The University of Sydney

Telephone +61 2 9114 2168
Fax +61 2 9351 7726

Website My personal website
My Google Scholar profile
My book on inhomogeneous models

Research interests

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 of 95°C than in the case when it is 5°C. Similarly, an image of a distant galaxy varies depending if its light rays 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.

Current projects


Possible student projects include

  • Light propagation effects in the inhomogeneous Universe

  • Measuring the mass of cosmic voids

  • Evolution of dark energy

  • The onset of inflation

  • Interacting dark matter

If you are interested in one of those topic, please send me an email and I will be more than happy to give you more details.

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Selected grants

2017

  • RECO - relativistic effects in cosmological observers; Lewis G, Bolejko K; Universities Australia/Germany Joint Research Co-operation scheme.

2015

  • General relativistic light propagation effects: new insight into cosmic voids, dark matter, dark energy, and Einsteins theory of gravity.; Bolejko K; Australian Research Council (ARC)/Future Fellowships (FT).

2011

  • Spectral methods in cosmology: structure formation, interactions, light propagation, and cosmological observations; Bolejko K, Bolejko K, Lewis G; DVC Research/Postdoctoral Research Fellowship Scheme.

Selected publications

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Journals

  • Bolejko, K. (2017). Cosmological backreaction within the Szekeres model and emergence of spatial curvature. Journal of Cosmology and Astroparticle Physics, 2017 (6), 1-20. [More Information]
  • Bolejko, K., Korzynski, M. (2017). Inhomogeneous cosmology and backreaction: Current status and future prospects. International Journal Of Modern Physics D, 26(6). [More Information]
  • da Cunha, E., Hopkins, A., Colless, M., Taylor, E., Blake, C., Howlett, C., Magoulas, C., Lucey, J., Lagos, C., Bland-Hawthorn, J., Bolejko, K., Bryant, J., Croom, S., et al (2017). The Taipan Galaxy Survey: Scientific Goals and Observing Strategy. Publications of the Astronomical Society of Australia, 34, 1-28. [More Information]
  • Bolejko, K., Nazer, M., Wiltshire, D. (2016). Differential cosmic expansion and the Hubble flow anisotropy. Journal of Cosmology and Astroparticle Physics, 2016 (6), 1-31. [More Information]
  • Rasanen, S., Bolejko, K., Finoguenov, A. (2015). New Test of the Friedmann-Lemaitre-Robertson-Walker Metric Using the Distance Sum Rule. Physical Review Letters, 115(10), 1-5. [More Information]
  • Bacon, D., Andrianomena, S., Clarkson, C., Bolejko, K., Maartens, R. (2014). Cosmology with Doppler lensing. Monthly Notices of the Royal Astronomical Society, 443(3), 1900-1915. [More Information]
  • Avelino, P., Bolejko, K., Lewis, G. (2014). Nonlinear Chaplygin gas cosmologies. Physical Review D, 89(10), 103004-1-103004-6. [More Information]
  • Redlich, M., Bolejko, K., Meyer, S., Lewis, G., Bartelmann, M. (2014). Probing spatial homogeneity with LTB models: A detailed discussion. Astronomy and Astrophysics, 570, 1-17. [More Information]
  • Bolejko, K., Clarkson, C., Maartens, R., Bacon, D., Meures, N., Beynon, E. (2013). Antilensing: The Bright Side of Voids. Physical Review Letters, 110, 1-5. [More Information]
  • Krasinski, A., Bolejko, K. (2013). Exact inhomogeneous models and the drift of light rays induced by nonsymmetric flow of the cosmic medium. International Journal Of Modern Physics D, 22(6), 1-14. [More Information]
  • Bolejko, K., Stoeger, W. (2013). Intermediate homogenization of the Universe and the problem of gravitational entropy. Physical Review D, 88(6), 1-8. [More Information]
  • Sussman, R., Bolejko, K. (2012). A novel approach to the dynamics of Szekeres dust models. Classical and Quantum Gravity, 29(6), 1-25. [More Information]
  • Krasinski, A., Bolejko, K. (2012). Apparent horizons in the quasispherical Szekeres models. Physical Review D, 85(12), 1-14. [More Information]
  • Krasinski, A., Bolejko, K. (2012). Geometry of the quasihyperbolic Szekeres models. Physical Review D, 86(10), 1-19. [More Information]
  • Barnes, L., Bolejko, K., Lewis, G. (2012). Letters. Australian Physics, 49(5), 138-139.
  • Bolejko, K., Ferreira, P. (2012). Ricci focusing, shearing, and the expansion rate in an almost homogeneous Universe. Journal of Cosmology and Astroparticle Physics, 2012 (5). [More Information]
  • Bolejko, K. (2011). Conceptual problems in detecting the evolution of dark energy when using distance measurements. Astronomy and Astrophysics, 525(13), 1-6. [More Information]
  • Bolejko, K., Sussman, R. (2011). Cosmic spherical void via coarse-graining and averaging non-spherical structures. Physics Letters B, 697(4), 265-270. [More Information]
  • Bolejko, K., Celerier, M., Krasinski, A. (2011). Inhomogeneous cosmological models: Exact solutions and their applications. Classical and Quantum Gravity, 28(16), 1-27. [More Information]
  • Krasinski, A., Bolejko, K. (2011). Redshift propagation equations in the beta ' not equal 0 Szekeres models. Physical Review D, 83(8), 1-23. [More Information]
  • Bolejko, K. (2011). The effect of inhomogeneities on the distance to the last scattering surface and the accuracy of the CMB analysis. Journal of Cosmology and Astroparticle Physics, 2011 (2). [More Information]
  • Bolejko, K., Hellaby, C., Alfedeel, A. (2011). The metric of the cosmos from luminosity and age data. Journal of Cosmology and Astroparticle Physics, 2011 (9), 1-26. [More Information]
  • Bolejko, K. (2011). Weak lensing and the Dyer-Roeder approximation. Monthly Notices of the Royal Astronomical Society, 412(3), 1937-1942. [More Information]
  • Bolejko, K., Stoeger, W. (2010). Conditions for spontaneous homogenization of the universe. International Journal Of Modern Physics D, 19(14), 2405-2412. [More Information]

Conferences

  • Bolejko, K. (2013). Redshift and distance in the inhomogeneous universe. 9th Mexican School on Gravitation and Mathematical Physics: Cosmology for the 21st Century, Melville: American Institute of Physics (AIP). [More Information]

2017

  • Bolejko, K. (2017). Cosmological backreaction within the Szekeres model and emergence of spatial curvature. Journal of Cosmology and Astroparticle Physics, 2017 (6), 1-20. [More Information]
  • Bolejko, K., Korzynski, M. (2017). Inhomogeneous cosmology and backreaction: Current status and future prospects. International Journal Of Modern Physics D, 26(6). [More Information]
  • da Cunha, E., Hopkins, A., Colless, M., Taylor, E., Blake, C., Howlett, C., Magoulas, C., Lucey, J., Lagos, C., Bland-Hawthorn, J., Bolejko, K., Bryant, J., Croom, S., et al (2017). The Taipan Galaxy Survey: Scientific Goals and Observing Strategy. Publications of the Astronomical Society of Australia, 34, 1-28. [More Information]

2016

  • Bolejko, K., Nazer, M., Wiltshire, D. (2016). Differential cosmic expansion and the Hubble flow anisotropy. Journal of Cosmology and Astroparticle Physics, 2016 (6), 1-31. [More Information]

2015

  • Rasanen, S., Bolejko, K., Finoguenov, A. (2015). New Test of the Friedmann-Lemaitre-Robertson-Walker Metric Using the Distance Sum Rule. Physical Review Letters, 115(10), 1-5. [More Information]

2014

  • Bacon, D., Andrianomena, S., Clarkson, C., Bolejko, K., Maartens, R. (2014). Cosmology with Doppler lensing. Monthly Notices of the Royal Astronomical Society, 443(3), 1900-1915. [More Information]
  • Avelino, P., Bolejko, K., Lewis, G. (2014). Nonlinear Chaplygin gas cosmologies. Physical Review D, 89(10), 103004-1-103004-6. [More Information]
  • Redlich, M., Bolejko, K., Meyer, S., Lewis, G., Bartelmann, M. (2014). Probing spatial homogeneity with LTB models: A detailed discussion. Astronomy and Astrophysics, 570, 1-17. [More Information]

2013

  • Bolejko, K., Clarkson, C., Maartens, R., Bacon, D., Meures, N., Beynon, E. (2013). Antilensing: The Bright Side of Voids. Physical Review Letters, 110, 1-5. [More Information]
  • Krasinski, A., Bolejko, K. (2013). Exact inhomogeneous models and the drift of light rays induced by nonsymmetric flow of the cosmic medium. International Journal Of Modern Physics D, 22(6), 1-14. [More Information]
  • Bolejko, K., Stoeger, W. (2013). Intermediate homogenization of the Universe and the problem of gravitational entropy. Physical Review D, 88(6), 1-8. [More Information]
  • Bolejko, K. (2013). Redshift and distance in the inhomogeneous universe. 9th Mexican School on Gravitation and Mathematical Physics: Cosmology for the 21st Century, Melville: American Institute of Physics (AIP). [More Information]

2012

  • Sussman, R., Bolejko, K. (2012). A novel approach to the dynamics of Szekeres dust models. Classical and Quantum Gravity, 29(6), 1-25. [More Information]
  • Krasinski, A., Bolejko, K. (2012). Apparent horizons in the quasispherical Szekeres models. Physical Review D, 85(12), 1-14. [More Information]
  • Krasinski, A., Bolejko, K. (2012). Geometry of the quasihyperbolic Szekeres models. Physical Review D, 86(10), 1-19. [More Information]
  • Barnes, L., Bolejko, K., Lewis, G. (2012). Letters. Australian Physics, 49(5), 138-139.
  • Bolejko, K., Ferreira, P. (2012). Ricci focusing, shearing, and the expansion rate in an almost homogeneous Universe. Journal of Cosmology and Astroparticle Physics, 2012 (5). [More Information]

2011

  • Bolejko, K. (2011). Conceptual problems in detecting the evolution of dark energy when using distance measurements. Astronomy and Astrophysics, 525(13), 1-6. [More Information]
  • Bolejko, K., Sussman, R. (2011). Cosmic spherical void via coarse-graining and averaging non-spherical structures. Physics Letters B, 697(4), 265-270. [More Information]
  • Bolejko, K., Celerier, M., Krasinski, A. (2011). Inhomogeneous cosmological models: Exact solutions and their applications. Classical and Quantum Gravity, 28(16), 1-27. [More Information]
  • Krasinski, A., Bolejko, K. (2011). Redshift propagation equations in the beta ' not equal 0 Szekeres models. Physical Review D, 83(8), 1-23. [More Information]
  • Bolejko, K. (2011). The effect of inhomogeneities on the distance to the last scattering surface and the accuracy of the CMB analysis. Journal of Cosmology and Astroparticle Physics, 2011 (2). [More Information]
  • Bolejko, K., Hellaby, C., Alfedeel, A. (2011). The metric of the cosmos from luminosity and age data. Journal of Cosmology and Astroparticle Physics, 2011 (9), 1-26. [More Information]
  • Bolejko, K. (2011). Weak lensing and the Dyer-Roeder approximation. Monthly Notices of the Royal Astronomical Society, 412(3), 1937-1942. [More Information]

2010

  • Bolejko, K., Stoeger, W. (2010). Conditions for spontaneous homogenization of the universe. International Journal Of Modern Physics D, 19(14), 2405-2412. [More Information]

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