Philipp Arras


I work on Bayesian imaging algorithms for radio telescopes. After having finished my master's degree at Heidelberg University, where I focused on String Theory, Quantum Field Theory and pure maths, I joined Torsten Enßlin's group at the Max-Planck Institute for Astrophysics in Garching. I am supervised by Rüdiger Westermann (TU Munich) and Torsten Enßlin (LMU, MPA) and funded by the Ministry of Education and Research (BMBF) in context of the Verbundprojekt D-MeerKAT project. My work includes the unification of calibration and imaging, multi-spectral imaging, polarization imaging, data fusion with single dish data and VLBI imaging. Moreover, I am involved in the software projects NIFTy (a Python library for Bayesian inference of fields), resolve (my radio imaging algorithm), vlbi_resolve (the same thing for dynamic VLBI imaging) and nifty_gridder (a non-uniform FFT specialized for radio interferometry).

Papers and Publications

Full list: arXiv, Google Scholar

  • 2020: The variable shadow of M87*. arXiv.
  • 2019: NIFTy5 (Numerical Information Field Theory v5). ASCL.
  • 2019: Unified Radio Interferometric Calibration and Imaging with Joint Uncertainty Quantification. arXiv, doi.
  • 2018: Radio Imaging With Information Field Theory. arXiv, doi.
  • 2016: Terminal Singularities, Milnor Numbers, and Matter in F-theory. arXiv.



Invited Talks

  • Plenary talk, SKA Bursary Conference, Nov 2017, Cape Town, South Africa.
  • Institute colloquium, Max-Planck Institute for Intelligent Systems, Oct 2018, Tübingen, Germany.
  • Institute colloquium, Center for Astrophysics and Space Physics, North-West University, Nov 2018, Potchefstroom, South Africa.
  • Bayesian Imaging and Gridding workshop, May 2019, Cambridge University, UK.
  • Institute colloquium, May 2019, Würzburg, Germany.
  • Seminar "TRR146: Multiscale Simulation Methods for Soft Matter Systems", Jan 2020, Mainz, Germany.
  • ODSL (Origin Data Science Lab) Journal Club, June 2020, video conference.

Contributed Conference Talks

  • D-MeerKAT Collaboration meeting, Mar 2018, Würzburg, Germany.
  • The Power of Faraday Tomography, May 2018, Miyasaki, Japan.
  • IEEE European Signal Processing Conference, Sep 2018, Rome, Italy.
  • Monitoring the Nonthermal Universe, Sep 2018, Cochem, Germany.
  • LOFAR MKSP Annual Meeting, Sep 2019, Bochum, Germany.
  • Radio2019 Symposium: Recent progress in radio astronomy, Oct 2019, Dortmund, Germany.
  • LOFAR MKSP Annual Meeting, June 2020, video conference.
  • D-MeerKAT Collaboration meeting, June 2020, video conference.


  • Science with the MPIfR-MT Prototyp Telescope, Apr 2018, Bonn, Germany.
  • Bayesian Imaging meets Radio Reality (organized by Torsten Enßlin and me), Jul 2018, Garching, Germany.
  • Radio Imaging Workshop, Dec 2018, Cape Town, South Africa.
  • Bayesian Imaging meets Radio Reality II (organized by Torsten Enßlin and me), Aug 2019, Garching, Germany (more).
  • NIFTy6 introduction (organized by me) May 2020, video conference (more).


Last modified: 2020-06-25 Do 16:36