Announcement: I left academia
I transitioned from my position at TU Munich and the Max-Planck
Institute for Astrophysics to Bain &
Company as a consultant. My last day at TUM/MPA was on Oct
31, 2022.
If you would like to discuss anything related to resolve, nifty or information
field theory in general, please reach out to me.
Research
I did my PhD and postdoc in computational statistics and physics. At
the Max-Planck Institute for Astrophysics, I applied Bayesian statistics
to imaging algorithms for radio telescopes. I aimed to squeeze out all
information present in radio data sets in order to arrive at the highest
resolution possible together with uncertainty quantification. To this
end, I developed theoretical models for inference algorithms and tailor
them for the unification of calibration and imaging, multi-spectral
imaging, polarization imaging, data fusion with single dish data and
Very Long Baseline Interferometry (VLBI).
These ideas are condensed into various software projects: NIFTy (a Python library
for Bayesian inference of fields), resolve (my radio
imaging library), vlbi_resolve
(the same thing for dynamic VLBI imaging) and ducc (which includes a
non-uniform FFT specialized for radio interferometry). I hold a PhD in
physics and was part of Rüdiger
Westermann’s group (TU Munich) and Torsten Enßlin’s
information field theory group (MPA Garching).
During my masters at Heidelberg University I worked on String Theory,
Quantum Field Theory and pure maths.
Papers and Publications
Papers
See also: arXiv, Google
Scholar
- Bayesian statistics approach to imaging of aperture synthesis data:
RESOLVE meets ALMA, under review: arXiv
- Bayesian and Machine Learning Methods in the Big Data era for
astronomical imaging, under review: arXiv
- Multi-Component Imaging of the Fermi Gamma-ray Sky in the
Spatio-spectral Domain, under review: arXiv
- Variable structures in M87* from space, time and frequency resolved
interferometry, Nature Astronomy (2022): arXiv, doi, presentation material, software, data products, MPA
article (en de), press material
- Deep images of the Galactic center with GRAVITY, A&A, A82
(2022): arXiv, doi, MPG article
(de,
en), YouTube animation
- Efficient wide-field radio interferometric response, A&A
646, A58 (2021): arXiv, doi
- Towards Bayesian Data Compression, Annalen der Physik 2021,
2000508: arXiv, doi
- Comparison of classical and Bayesian imaging in radio
interferometry, A&A 646, A84 (2021): arXiv, doi, pdf (600dpi), data products, MPA
article (de, en)
- Unified Radio Interferometric Calibration and Imaging with Joint
Uncertainty Quantification, A&A 627, A134 (2019): arXiv, doi
- Radio Imaging With Information Field Theory, 2018 26th European
Signal Processing Conference (EUSIPCO): arXiv, doi
- Terminal Singularities, Milnor Numbers, and Matter in F-theory,
Journal of Geometry and Physics 123, 71-97, 2018: arXiv, doi
Theses
- Dissertation (2021): pdf
- Master thesis (2016): pdf, tex
- Bachelor thesis (2014): pdf, tex
Misc
- NIFTy5 (Numerical Information Field Theory v5), 2019. ASCL
Software
Talks
Invited Talks
- Speaker at the course “Was
die Welt im Innersten zusammenhält: Gottesfrage und
Naturwissenschaften”, July 5-9, 2021
- Seminar, June 2021, Center for Astrophysics, Cambridge,
Massachusetts, United States (resources)
- ODSL (Origin Data Science Lab) Journal Club, June 2020, Garching,
Germany
- Seminar “TRR146: Multiscale Simulation Methods for Soft Matter
Systems”, Jan 2020, Mainz, Germany
- Institute colloquium, May 2019, Würzburg, Germany
- Bayesian Imaging and Gridding workshop, May 2019, Cambridge
University, UK
- Institute colloquium, Center for Astrophysics and Space Physics,
North-West University, Nov 2018, Potchefstroom, South Africa
- Institute colloquium, Max-Planck Institute for Intelligent Systems,
Oct 2018, Tübingen, Germany
- Plenary talk, SKA Bursary Conference, Nov 2017, Cape Town, South
Africa
Contributed Conference Talks
- MPA Institute Seminar, July 2022, Garching, Germany
- AT-AP-RASC 2022: 3rd URSI Atlantic Radio Science Meeting, June 2022,
Gran Canaria, Spain (resources)
- Radio Imaging Workshop, May 2022, Ballito, South Africa
- D-MeerKAT Collaboration meeting, June 2020, video conference
- LOFAR MKSP Annual Meeting, June 2020, video conference
- Radio2019 Symposium: Recent progress in radio astronomy, Oct 2019,
Dortmund, Germany
- LOFAR MKSP Annual Meeting, Sep 2019, Bochum, Germany
- Monitoring the Nonthermal Universe, Sep 2018, Cochem, Germany
- IEEE European Signal Processing Conference, Sep 2018, Rome,
Italy
- The Power of Faraday Tomography, May 2018, Miyasaki, Japan
- D-MeerKAT Collaboration meeting, Mar 2018, Würzburg, Germany
Workshops (co-)organized by
me
- Resolve workshop (organized by me), Oct 2022, Bonn, Germany (more)
- NIFTy7+GRAVITY workshop (organized by Julia Stadler and
me), Aug 2021, Garching, Germany (more)
- Signal reconstruction with Python (contribution), seminar at LMU,
September 2020, Garching, Germany
- NIFTy6 introduction (organized by me) May 2020, video conference (more)
- Bayesian Imaging meets Radio Reality II (organized by Torsten Enßlin
and me), Aug 2019, Garching, Germany (more)
- Bayesian Imaging meets Radio Reality (organized by Torsten Enßlin
and me), Jul 2018, Garching, Germany
Attended workshops
- Radio Imaging Workshop, May 2022, Ballito, South Africa
- Workshop on state of
the art in sampling and clustering (contribution), October 2020,
Garching, Germany
- Radio Imaging Workshop, Dec 2018, Cape Town, South Africa
- Science with the MPIfR-MT Prototyp Telescope, Apr 2018, Bonn,
Germany
Teaching
Co-supervised master
students
- Julian Rüstig (Combined Inference of Single Dish and
Interferometric Radio Data)
- Fabian Kapfer (Multi-frequency radio calibration)
- Jongseo Kim (Generative models for pattern formation)
- Simon Ding (Multi-frequency radio imaging)
- Crystal Mele (tba)
- Richard Fuchs (tba)
More resources
- MPA highlight on my work (Jan 01, 2021): en de
- MPA highlight on my work (Jan 01, 2022): en de
- IFT collaboration guide: pdf
Misc
Impressum, Datenschutzerklärung,
Haftungsausschluss