Dimming GRS 1915+105 observed with NICER and Insight–HXMT M. Zhou, V. Grinberg, A. Santangelo, C. Bambi, Q. Bu, C. M. Diez, L. Kong, J. F. Steiner and Y. Tuo A&A, 694 (2025) A104 Published online: 05 February 2025 DOI: 10.1051/0004-6361/202451558