Merging of unequal mass binary black holes in non-axisymmetric galactic nuclei Peter Berczik, Manuel Arca Sedda, Margaryta Sobolenko, Marina Ishchenko, Olexander Sobodar and Rainer Spurzem A&A, 665 (2022) A86 Published online: 13 September 2022 DOI: 10.1051/0004-6361/202244354