Dr. Aru Beri

In this talk, I will discuss accretion-powered millisecond X-ray pulsars (AMXP) and nuclear-powered X-ray millisecond pulsars within Low-mass X-ray binary systems (LMXBs). Presenting the AstroSat pilot survey results, I will share the discovery of an intermittent AMXP, providing insights into thermonuclear burst processes. Shifting the focus to the intricate relationship between accretion flow and jets, I will present findings from a dense multi-wavelength campaign on the neutron star LMXB 4U 1820-30 in 2022, utilizing X-ray observations from NICER, NuSTAR, and AstroSat, along with quasi-simultaneous radio observations using ATCA. The presentation concludes with exploring prospects, emphasizing the potential of broadband X-ray polarization through upcoming missions, IXPE and XPoSat (India's first X-ray Polarization mission), contributing to our understanding of regions with strong gravity in these dynamic astrophysical systems.