Grinberg, V.Pooley, G. G.Bel, M. CadolleLaurent, P.Nowak, M. A.Pottschmidt, KatjaRodriguez, J.Wilms, J.2023-09-062023-09-062015-03-30Grinberg, V. et al. “Cyg X-1 transiting into the hard state”, ATel.7316, (30 March 2015). https://astronomerstelegram.org/?read=7316http://hdl.handle.net/11603/29567en-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.RadioX-rayBinaryBlack HoleText