Thomas, Jessymol K.; Buckley, David A. H.; Charles, Philip A.; Paice, John A.; Potter, Stephen B.; Steiner, James F.; Lasota, Jean-Pierre; Gandhi, P.; Tao, Lian; Ma, Xiang; Yang, Yi-Jung; Tuo, Youli; Zhang, Shuang-Nan
(2022)
We present high-speed optical photometry from SAAO and SALT on the black hole LMXB MAXI J1820+070 (ASSASN-18ey), some of it simultaneous with NICER, Swift, and Insight-HXMT X-ray coverage. We detect optical quasi-periodic ...