Jeroen Stil

Jeroen Stil

Contact information

Phone number

Office: +1 (403) 220-8015


Office: SB519


Educational Background

PhD Astronomy, University of Leiden, 1999

MSc Astronomy, University of Leiden, 1993


Areas of Research

Computational Astrophysics
Cosmic Magnetism
Galaxy Evolution
Radio Astronomy

Radio Astronomy Radio Astronomy reveals events in the cosmos that cannot be observed by other means. We use the largest radio telescopes in the world to observe the motions of gas in galaxies, and elusive magnetic fields that thread through galaxies and affect the flow of gas. Some galaxies contain super-massive black holes that consume the surrounding gas and in the process eject fast beams of matter (jets) that can travel at nearly the speed of light for up to a few million years before finally running into something. These process define the course of evolution of galaxies, the distribution of chemical elements through space, and the locations where the next generation of stars will form. We make images with radio telescopes and apply advanced image analysis and statistics tools to build astrophysical models of galaxy evolution. To this end, we often use data from conventional telescopes and space missions to obtain a complete picture of the galaxies that we study.

Radio Astronomical Surveys Statistical analysis is one of the most powerful analysis tools in astrophysics, and one that requires skills that can be applied in many other situations outside astrophysics. These include advanced imaging techniques, the design of algorithms for extracting information from large multi-dimensional survey images, simulations, and statistical analysis of the acquired information. The design, execution, and analysis of large surveys of the sky with radio telescopes creates multi-disciplinary research opportunities on the boundary of astrophysics, computer science, and statistics. Current research in astronomical surveys includes a survey of part of the Milky Way with the Jansky Very Large Array, a survey of magnetic fields in the nearby interstellar medium with the 300-m Arecibo Radio Telescope, and measuring polarization of millions of sources in images from a starting survey with the Australian Square Kilometre Array Pathfinder (ASKAP).



Course number Course title Semester
PHYS 341 Classical Mechanics I Fall
ASPH 503 The Interstellar Medium Winter
PHYS 343 Classical Mechanics II Winter
PHYS 321 Harmonic Motion, Waves, and Rotation Winter


  • Magnetic field tomography in nearby galaxies with the Square Kilometre Array. G Heald; F Tabataei; B Gaensler; R Beck; De Block W; R Dettmar; M Haverkorn; S-A Mao; Aaron Williams; V Heesen; N Oppermann; A Fletcher; A Scaife; M Krause; C Horellou; Jeroen Stil; D Sokoloff; A Taylor; K Takahashi. 525-535. (2014)
  • A Stacking Analysis of the Free-Free Opacity of Spiral Galaxy Disks. T* Klassen; Jeroen Stil; B* Keller. (2014)
  • Automatic Identification of Hexagonal Pattern Artifacts in Radio Astronomical Surveys. Kenneth Edwin Barker; D* Said; Jeroen Stil; A Taylor. (2013)
  • Magnetic Field in the Intermediate Velocity Arch. Jeroen Stil; A* Hryhoriw. (2013)
  • High-latitude Structure of the Galactic Magnetic Field. A* Hryhoriw; Jeroen Stil. (2013)
  • Probing Magnetic Fields with GALFACTS. S* George; M Andrecut; A Taylor; Jeroen Stil. 533-536. (2011)
  • Stacking Radio Sources in Polarization: Relation With Spectral Index. Jeroen Stil; A Taylor; S George; B* Keller. (2011)
  • Probing Polarization in Faint Radio Sources Using Median Stacking. B* Keller; Jeroen Stil. (2011)
  • Stacking Polarized Intensity. B* Keller; A Taylor; Jeroen Stil; S George. (2011)
  • Rotation Measures from Two Data Points - the NVSS Rotation Measure Catalogue. Jeroen Stil; A Taylor; C* Sunstrum. 296-302. (2010)
  • Stacking Radio Polarization. A Taylor; S George; Jeroen Stil; B* Keller. (2010)
  • Why are Faint Radio Sources More Highly Polarized?. Jeroen Stil; B* Keller; A Taylor; S George. (2010)
  • Evolution of Magnetic Fields in Galaxies. Jeroen Stil. 1-8. (2009)
  • Science with the Square Kilometre Array. Jeroen Stil. (2009)
  • Magnetic Fields in Distant Spiral Galaxies. Jeroen Stil. 147-156. (2008)
  • The Integrated Polarization of Spiral Galaxies. Jeroen Stil; A Taylor; R Beck; L* Mitchell; M Krause. 543-544. (2008)
  • Probing the Galaxy with Superbubbles: Three Dimensional Magnetohydrodynamic Simulations. Rachid Ouyed; Jeroen Stil; N* Wityk. 305-309. (2008)
  • CHANG-ES: an overview. Jeroen Stil; CHANG-ES collaboration. 1-2. (2018)
  • DRAO Deep Polarization Study at 1.4 GHz. J* Grant; A. Taylor; R Ransom; O'Sullivan S*; Jeroen Stil; R Ricci; T Landecker; R Kothes. 559-560. (2008)
  • From the NVSS RM Catalogue to Future Polarisation Surveys. S Mao; Y Ma; A Basu; S Betti; C Heiles; Alexander Hill; J West; Jeroen Stil. 1-4. (2018)
  • Capabilities of next-generation telescopes for extragalactic magnetism. Jeroen Stil. 1-4. (2018)
  • In-band depolarization as a probe of the turbulent ISM in CHANG-ES galaxies. P Schmidt; Jeroen Stil; B* Chawla; M Krause; J Irwin. (2017)
  • Not the magnetic field. A* Hryhoriw; Jeroen Stil. (2016)
  • Polarization of faint radio sources from stacking the ATLAS survey. J Banfield; Jeroen Stil; T Franzen; Robin Norris; S* Rogowski. (2016)
  • A Global view of M molecule-forming Clouds in the Galaxy. J, Newton; W, Howard; T, Dame; A, Tagliabschi; A, Taylor; S Gibson; M, Spraggs. 1-2. (2015)
  • Stacking of Radio Continuum Surveys. Jeroen Stil. 244-. (2014)
  • Structure, dynamical impact and origin of magnetic fields in nearby galaxies in the SKA era. M Krause; S-A Mao; G Heald; C Horellou; E Schinnerer; R Dettmar; V Heesen; F Tabatabaei; A Fletcher; Jeroen Stil; S Colafrancesco; D Sokoloff; D Bomans; K Ferriere; R Paladino; Y-Q Lou; R Beck. 407-424. (2014)
  • Stacking for Cosmic Magnetism with SKA surveys. Jeroen Stil; B* Keller. 569-577. (2014)
  • Using SKA Rotation Measures to Reveal the Mysteries of the Magnetised Universe. L Rudnick; A Taylor; V Vacca; I Agudo; A Scaife; E Carretti; N Oppermann; B Gaensler; S-A Mao; M Johnston-Hollitt; S Colafrancesco; G Heald; T Clarke; Jeroen Stil; A Bonafede; S Dehghan; L Pratley; R Beck; T Akahori; L Feretti; T Ensslin; M Haverkorn; F Govoni; D Schnitzeler. 371-388. (2014)
  • SKA Deep Polarization and Cosmic Magnetism. T Akahori; M Johnston-Hollitt; M Langer; A Scaife; D Ryu; L Rudnick; D Schleicher; R Taylor; Jeroen Stil; G Heald; R Beck; B Gaensler; I Agudo. 579-587. (2014)

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