Direct measurement of the distribution of dark matter with strongly lensed gravitational waves Shuo Cao, Jingzhao Qi, Zhoujian Cao, Marek Biesiada, Wei Cheng and Zong-Hong Zhu A&A, 659 (2022) L5 Published online: 04 March 2022 DOI: 10.1051/0004-6361/202142694