An atypical low-frequency QPO detected in the hard state of MAXI J1348-630 with $Insight$-HXMT

Xin-Lei Wang, Zhen Yan, Fu-Guo Xie +2

Based on the $Insight$-HXMT archival data, we have detected a new atypical low-frequency quasi-periodic oscillation (LFQPO) in the black hole X-ray binary MAXI J1348$-$630. The new…