Likely detection of magnetic field related LFQPO in the soft X-ray
re-brightening of GRS~1915+105
Likely detection of magnetic field related LFQPO in the soft X-ray
re-brightening of GRS~1915+105
Utilizing NICER observations, we present an analysis of the soft X-ray re-brightening event of GRS 1915+105 observed in 2021. During this event, we observed the emergence of a stable, long-lasting low-frequency quasi-periodic oscillation (LFQPO) with frequencies ranging from 0.17 to 0.21 Hz. Through a careful spectral analysis, we demonstrate that …