Evolution of low frequency quasi-periodic oscillations in GX 339-4 during its 2021 outburst using AstroSat data

Santanu Mondal, Anirudh Salgundi, Debjit Chatterjee +3

The black hole X-ray binary GX\,339-4 showed an X-ray outburst during 2021. The {\it AstroSat} captured this outburst when the source entered into the intermediate flux state while…