​Professor Krawczynski works on experimental and theoretical astroparticle physics. His work aims at revealing the inner workings of astrophysical black holes, and using black hole and neutron star observations for testing the theory of General Relativity and the Standard Model of Particle Physics in regimes not accessible in terrestrial laboratories.
Krawczynski is the Principal Investigator of the balloon-borne XL-Calibur polarimetry mission. X-Calibur studies the polarization of hard X-rays from mass accreting black holes and rotation and accretion powered neutron stars. The experiment was flown in 2022 from Esrange, Sweden. Krawczynski is furthermore a member of the science team of the Imaging X-ray Polarimeter Explorer (IXPE) - a NASA mission targeting black holes and neutron stars which was launched on Dec. 9, 2021. Click here for free online access to the Science paper “Polarized x-rays constrain the disk-jet geometry in the black hole x-ray binary Cygnus X-1” by Krawczynski, Muleri, Dovčiak, Veledina et al. (2022).