Discovery of a highly magnetic He-sdO star from a double-degenerate binary mergerM. Dorsch, N. Reindl, I. Pelisoli, U. Heber, S. Geier, A. G. Istrate and S. JusthamA&A, 658 (2022) L9DOI: https://doi.org/10.1051/0004-6361/202142880
