Radoslaw Jan Wojtak

Radoslaw Jan Wojtak is an Associate Professor at the Niels Bohr Institute, University of Copenhagen, affiliated with the DARK Cosmology Centre. His research focuses on cosmological applications of supernovae and gravitational lensing, particularly addressing the Hubble constant tension through multi-messenger observations and statistical modeling.

• Institution: University of Copenhagen
• Research Unit: Niels Bohr Institute / DARK
• Email: radek.wojtak@nbi.ku.dk

As a leading researcher in transient astrophysics, he develops Bayesian hierarchical models for Type Ia supernovae and investigates kilonovae as alternative distance indicators. His work leverages LSST and Hubble Space Telescope data to constrain cosmological parameters through strongly lensed supernova systems.

His recent publications analyze:

• γ-ray attenuation methods for H₀ measurement
• Extinction models in Cepheid calibration galaxies
• LSST lensing detection techniques
• Expanding photosphere method for kilonovae

Current collaborations span institutions in 15+ countries, with research outputs generating media coverage and social media engagement. No formal awards or student advisement details are publicly documented in the scraped materials.