Investigating Outburst Dynamics of Ultraluminous X-Ray Pulsar Swift J0243.6+ 6124

Ultraluminous X-ray pulsars (ULPs) are a subset of ultraluminous X-ray sources that are powered by accreting neutron stars with strong magnetic fields. ULPs exhibit luminosities exceeding the Eddington limit for a neutron star (typically ~10³⁸ erg/s), often reaching values up to ~10⁴⁰ erg/s.Swift J0243.6+6124 is the only known Galactic ULXP that offers a unique opportunity to study emission variability due to its proximity and brightness. In this study, we examine the evolution of the pulse profile, pulse fraction, and phase-resolved deviations using all the existing observations of Swift J0243.6+6124 during its recent outburst in 2023. We will present our results from this detailed investigation of this source and will discuss their implications.