Maciej Bilicki

Leiden Observatory / Sterrewacht Leiden
Leiden University / Universiteit Leiden

P.O. Box 9513
NL-2300 RA Leiden
The Netherlands

E-mail bilicki(at)

About me
Research interests
Current projects
My education

About me

I am a postdoctoral research assistant at the Leiden Observatory (Sterrewacht Leiden) of the Leiden University in the Netherlands.
Earlier, between May 2012 and April 2015, I was a postdoctoral fellow at the Department of Astronomy, University of Cape Town in South Africa.
In my research, I'm using data to learn as much as possible about our Universe. I might be thus called an observational cosmologist, although certainly not an observer (yet?).

My research interests

I'm working at an interface of theory and observations and what I like best is to apply available data to test cosmological models and their consequences. I'm also interested in extracting as much information as posible from currently available vast amounts of astronomical data, especially in deep, wide-angle surveys.
In general, my research interests cover theoretical and observational cosmology and large-scale structure of the Universe, and in particular such topics as:
If you have any ideas for projects related to the above, or just want to get in touch, feel free to send me an email at maciek(at)

My current projects

I'm currently leading a long-term project of generating the largest all-sky three-dimensional catalogues of galaxies and inferring cosmological information from them. For that purpose, together with my collaborators (Tom Jarrett, John Peacock and others), we have been using photometric datasets covering the whole sky (2MASS, WISE and SuperCOSMOS) and appropriate spectroscopic samples (2MRS, 2dFGS, 6dFGRS, SDSS, GAMA), to generate photometric redshift datasets on unprecedented angular scales.
The details and the first major outcome of this project, the 2MASS Photometric Redshift catalogue (2MPZ), are described in a paper published in ApJS, available also at arXiv:1311.5246. The 2MPZ data are publicly available from SuperCOSMOS Science Archive in Edinburgh.
A new photometric all-sky catalogue, based on WISE and SuperCOSMOS only and much deeper than the 2MPZ, is in final stages of preparation. Some preliminary results are shown in conference proceedings of IAU Symposium 308 "The Zeldovich Universe: Genesis and Growth of the Cosmic Web", held in June 2014 in Tallinn, Estonia: arXiv:1408.0799.

These catalogues are now being used for various cosmological tests, such as those available from cross-matching galaxy data with the CMB (e.g. the integrated Sachs-Wolfe effect).

My publications

As the first author

As a co-author

Conference proceedings

I have also served as a referee for A&A, Astroparticle Physics, MNRAS and Physics Letters B.

My education

I have obtained my PhD at the Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences. My advisor was Michal Chodorowski.
My thesis, "Motion of the Local Group as a cosmological probe", is available from arXiv:1205.1970.
My PhD project was to constrain the mean matter density of the Universe from the clustering dipole of the Two Micron All Sky Survey Extended Source Catalog (2MASS XSC).

For my MSc I worked on the cosmic density-velocity relation in the spherical collapse model. I graduated in astronomy from the Nicolaus Copernicus University in Torun, Poland.
Before that, I had obtained a MSc degree in mathematics with computer science at the University of Lodz.