Broad-band noises in GX 339-4 during the 2021 outburst observed with Insight-HXMT and NICER

Yong-Jie Jin, Xiao Chen, Hai-Fan Zhu +2

Rapid X-ray variability of GX 339$-$4 including the low-frequency quasi-periodic oscillations (LFQPOs) and broad-band noises have been observed with the Hard X-ray Modulation Teles…