Henric Krawczynski
Washington University in St. Louis, USA

Abstract
NASA and ESA launched the Imaging X-Ray Polarimetry Explorer (IXPE) in 2021, and our group has launched the balloon-born hard X-ray polarimeter XL-Calibur in 2024. The two missions observe extreme objects such as stellar mass and supermassive black holes, neutron stars in different environments, and magnetars and perform for the first time precision measurements of their polarization in the 2-8 keV (IXPE) and 15-60 keV (XL-Calibur) energy bands. I will describe the two missions, and discuss the results obtained for Black Holes in X-ray binaries with regards to their implications for how black holes accrete matter.

2025 June 27, 13:30

IA/U.Porto
Centro de Astrofísica da Universidade do Porto (Auditorium)
Rua das Estrelas, 4150-762 Porto