Accretion properties of MAXI J1813-095 during its failed outburst in 2018

We present the results obtained from detailed timing and spectral studies of a black hole candidate MAXI~J1813-095 using {\it Swift}, NICER}, NuSTAR} observations during its 2018 outburst. The behaviour source is mainly studied by NICER} light curves in $0.5-10$ keV range. did not find any signature quasi-periodic oscillations power density spectra source. carry out analysis with combined disk blackbody \& power-law model, physical two-component advective flow (TCAF) model. From {\tt blackbody} power-law} we extracted thermal non-thermal fluxes, photon index, inner temperature. also evidence for weak reflection spectra. have tested TCAF model on broadband spectrum Swift}/XRT. parameters like mass accretion rates, size Compton clouds shock strength are extracted. Our result shows that remained hard state entire outburst which indicates `failed' estimate as $7.4 \pm 1.5$ $M_{\odot}$ study use LAOR} Fe K$\alpha$ line emission. this, spin parameter estimated $a^* > 0.76$. inclination angle system to be range $28^{\circ} - 45^{\circ}$ distance $\sim 6$ kpc.