Tomo-e Gozen and the X-ray telescope NICER on the International Space Station carried out simultaneous high-speed observations of the dwarf nova SS Cyg. Highly correlated optical and X-ray variations and optical lags ranging from 0.3 to 3.1 s were successfully detected.

• https://tomoe.mtk.ioa.s.u-tokyo.ac.jp/news.html (May 18, 2022)