Andrej Dvornik

From galaxies to algorithms: finding patterns in complexity.

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Hi, I’m Andrej — an astrophysicist and data scientist with a love for exploring the hidden structure of the Universe. My work focuses on how galaxies and dark matter are connected, and I spend a lot of time turning huge amounts of data into meaningful insights using Python, statistics, and machine learning.

Over the years, I’ve co-authored nearly 50 scientific papers, built tools and models used in international research collaborations, and had the chance to share my work at conferences around the world. I also enjoy mentoring students and making science accessible through teaching and public outreach.

Beyond the research, I’m passionate about problem solving, building efficient workflows, and finding creative ways to apply scientific thinking outside of academia.

selected publications

  1. KiDS-Legacy: Covariance validation and the unified ONECOVARIANCE framework for projected large-scale structure observables
    Robert Reischke, Sandra Unruh, Marika Asgari, and 24 more authors
    A&A, Jul 2025
  2. KiDS-1000: Weak lensing and intrinsic alignment around luminous red galaxies
    Maria Cristina Fortuna, Andrej Dvornik, Henk Hoekstra, and 8 more authors
    A&A, Feb 2025
  3. KiDS-1000: Combined halo-model cosmology constraints from galaxy abundance, galaxy clustering, and galaxy-galaxy lensing
    Andrej Dvornik, Catherine Heymans, Marika Asgari, and 14 more authors
    A&A, Jul 2023
  4. The halo model with beyond-linear halo bias: unbiasing cosmological constraints from galaxy-galaxy lensing and clustering
    Constance Mahony, Andrej Dvornik, Alexander Mead, and 6 more authors
    MNRAS, Sep 2022
  5. Bright galaxy sample in the Kilo-Degree Survey Data Release 4. Selection, photometric redshifts, and physical properties
    M. Bilicki, A. Dvornik, H. Hoekstra, and 16 more authors
    A&A, Sep 2021
  6. The galaxy–dark matter connection: a KiDS study
    Andrej Dvornik
    University of Leiden, Netherlands, Jan 2019
  7. Unveiling galaxy bias via the halo model, KiDS, and GAMA
    Andrej Dvornik, Henk Hoekstra, Konrad Kuijken, and 11 more authors
    MNRAS, Sep 2018