Broad-band mHz QPOs and spectral study of LMC X-4 with <i>AstroSat</i>

We report the results of broadband timing and spectral analysis data from an AstroSat observation High Mass X-ray binary LMC X$-$4. The Large Area Proportional Counter (LAXPC) Soft Telescope (SXT) instruments on-board observed source in August 2016. A complete eclipse was detected with LAXPC. 3$-$40 keV power density spectrum showed presence coherent pulsations along a $\sim 26$ mHz quasi-periodic oscillation feature. properties X$-$4 were derived joint SXT LAXPC data. 0.5$-$25 persistent comprised absorbed high energy cutoff law photon index $\Gamma \sim$ 0.8 at $\sim$16 keV, soft thermal component kT$_{BB} 0.14 Gaussian components corresponding to Fe K$_\alpha$, Ne \textsc{ix} \textsc{x} emission lines. Assuming distance 50 kpc, we determined 0.5--25 luminosity be 2 \times 10^{38}$ erg s$^{-1}$.