Footprints in the wind of Vela X–1 traced with MAXIV. Doroshenko, A. Santangelo, S. Nakahira, T. Mihara, M. Sugizaki, M. Matsuoka, M. Nakajima and K. MakishimaA&A, 554 (2013) A37DOI: https://doi.org/10.1051/0004-6361/201321305