Hi, I’m Lukas Wenzl


A website about my academic research work in observational cosmology from 2017 to 2024. For the future, see my LinkedIn page.

Ph.D. + M.S. in Astronomy

Cornell University, USA, 2019-2024

B.S. in Physics

Heidelberg University, Germany, 2015-2019


Below you can find an overview of research publications.

For a complete, up-to-date list, see ADS.

Testing General Relativity on the largest scales of the observable Universe

Magnification Bias Estimators for Realistic Surveys: an Application to the BOSS Survey

Wenzl, L. et al. 2023, MNRAS, 527, 1760, doi: 10.1093/mnras/stad3314

Presenting a method to estimate the magnification bias in realistic galaxy surveys and application to SDSS BOSS.

Cosmology with the Roman Space Telescope — Synergies with CMB lensing

Wenzl, L. et al. 2022, MNRAS 512.4, 2022, pp. 5311–5328, doi:10.1093/mnras/stac790

Presenting a forecast for the combined analysis of weak lensing and galaxy clustering data from the Roman Space Telescope and CMB lensing data from the Simons Observatory.

Random Forests as a viable method to select and discover high redshift quasars

Wenzl, L. et al. 2021, AJ, 162, 72 (2021), doi:10.3847/1538-3881/ac0254

Presenting a method to select quasars up to redshift of about 6 using a supervised machine learning algorithm. We report 20 new quasars between redshifts of 4.6 and 5.7.

credits for pictures above: Mag Bias visual: NASA, ESA, and A. Feild (STScI) (modified); Cosmos field: NASA, ESA, and R. Massey; Planck Polarization: ESA and the Planck Collaboration; Roman image: Roman collab; SO image: Galitzkia et al. 2018; Google Earth; Pan-STARRS image: R. White and the PS1 Science Consortium; Quasar illustration: ESO/M. Kornmesser; Roman Space Telescope render: NASA


I am committed to making any code that might be useful to others in the field publically available as soon as I can.


A simple python3 tool to correct the astrometry, i.e. the sky position metadata, of FITS images. I wrote the tool from scratch as part of my work as a Research Assistant at the MPIA. The tool has been used for various photometric follow-up observations of quasar candidates.