Variable structures in the stellar wind of the HMXB Vela X-1 L. Abalo, P. Kretschmar, F. Fürst, C. M. Diez, I. El Mellah, V. Grinberg, M. Guainazzi, S. Martínez-Núñez, A. Manousakis, R. Amato et al. (2 more) A&A, 692 (2024) A188 Published online: 12 December 2024 DOI: 10.1051/0004-6361/202450168