About

Welcome to my website!

My name is Jurjen and I am originally from the Netherlands. I have studied and worked in five different countries across a range of disciplines. I currently work as a radio astronomer and software developer at Leiden Observatory and ASTRON, where I develop and optimise data-reduction strategies and automated pipelines for processing radio interferometric observations. My current focus is on enhancing the European LOw Frequency ARray (LOFAR) pipelines to efficiently produce deep wide-field high-resolution images on HPC clusters, which opens new windows to study the faintest and most distant objects in the universe at the lowest frequencies. In parallel, I also do research on the cosmic evolution of radio galaxies and energetic phenomena such as galaxy cluster mergers.

Beyond astronomy, I am a co-founder of Stamily, a platform created for and by people who stutter, supporting connection and community for people who stutter around the world.

I also enjoy travelling, with some of my journeys documented here.

Career

Postdoc | PhD candidate Leiden Observatory
Jan 2021–Present
Developing techniques and strategies for LOFAR VLBI calibration and imaging with the aim to study radio galaxy evolution. I was also a teaching assistant for the master course 'Radio Astronomy' and supervisor of several bachelor and master research projects. From 2021 to 2024 in the role as PhD candidate and from 2025 until now as a postdoc.
Software Developer (part-time) ASTRON
Mar 2025–Present
As part of a collaboration between Leiden Observatory and ASTRON, I am developing tools and workflows for the LOFAR VLBI calibration and imaging pipeline.
Data Scientist Matrixian Group
Aug 2019–Jan 2021
Developed machine learning pipelines, address validators, and APIs for various clients.
Mathematical Astronomer (Intern) European Space Agency
Sep 2019–Jan 2020
Investigated patterns in stellar-distance data from Gaia DR2. This work resulted in a publication in Astronomy & Astrophysics. Astrobites also wrote an article about this work.
Science Writer Scientias
Aug 2017–Jan 2020
Wrote popular science articles about physics, mathematics, history, computing, and the space industry. You can find my articles here.
Mechanical Engineer (Intern) EPPM, Tunisia
Jun–Aug 2017
Worked on automating calculations for determining stresses on lifting lugs.
Co-founder Stamily
Aug 2018–Present
Co-founded the non-profit Stamily, supporting people who stutter and served as first chair of the board.

Education

PhD Radio Astronomy Leiden University (the Netherlands)
2021–2025
During my PhD degree, I studied galaxy cluster mergers and radio galaxy evolution and developed techniques for wide-field sub-arcsecond imaging with LOFAR. This resulted in 5 first-authored peer-reviewed papers and a PhD thesis.
MSc. Space Studies KU Leuven (Belgium)
2017–2018
During this advanced master's degree, I studied a broad range of topics within the space sector, including space biology, law, technology, and science. In the summer of 2018, I was awarded a scholarship to study Chinese language and culture at National Cheng Kung University in Taiwan.
MSc. Mathematics Ghent University (Belgium)
2015–2017
During this master’s degree, I undertook courses in both applied and fundamental mathematics, as well as astronomy, theoretical physics, and quantum computing. I also spent a year at Uppsala University in Sweden through the Erasmus+ exchange programme. My master’s thesis focused on applying the analytical Fox H-function to the Nuker model, used to describe the surface brightness profiles of galactic nuclei.
BSc. Physics Utrecht University (the Netherlands)
2013–2015
During this bachelor’s degree, I completed courses in core areas of physics, including quantum mechanics, special relativity, and advanced Newtonian mechanics. For my bachelor’s thesis, I analysed mathematical astronomy work from the Ganita-Yukti-Bhasa, which was originally written in Malayalam/Sanskrit.
BSc. Mathematics Utrecht University (the Netherlands)
2012-2015
During this bachelor's degree, I concentrated on fundamental mathematics and its applications in physics and astronomy, while also taking courses in history and philosophy as part of a minor in the history and philosophy of science. For my bachelor’s thesis, I analysed mathematical astronomy work from the Ganita-Yukti-Bhasa, which was originally written in Malayalam/Sanskrit.
Propadeautic Mechanical Engineering Avans University of Applied Sciences (the Netherlands)
2011-2012
During this one-year propadeautic, I completed a range of courses in mechanical engineering, covering theoretical subjects such as materials science, Newtonian mechanics, and advanced mathematics, as well as practical training in drilling, milling, and welding. After one year, I chose to leave mechanical engineering to pursue a degree in mathematics at university level.

First-authored publications

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