X-ray-absorption spectrum of O+2 - Cornetta, Lucas M.; Kjellsson, Ludvig; Couto, Rafael C; Ågren, Hans; Carravetta , Vincenzo; Sörensen, Stacey L; Kubin, Markus; Bülow, Christine; Zamudio-Bayer, Vicente; Issendorff, Bernd von; Lau, J. Tobias; Söderström, Johan; et al. (Physical Review A, 2025)