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We study spectral properties of GX 339-4 during its 2010-11 outburst with TwoComponent Advective Flow (TCAF) model after its inclusion in XSPEC as a tablemodel. We compare results fitted by TCAF model with combined disk black bodyand power-law model. For a spectral fit, we use 2.5-25 keV spectral data of thePCA instrument onboard RXTE satellite. From our fit, accretion flow parameterssuch as Keplerian (disk) rate, sub-Keplerian (halo) rate, location and strengthof shock are extracted. We quantify how the disk and the halo rates vary duringthe entire outburst. We study how the halo to disk accretion rate ratio (ARR),quasi-periodic oscillations (QPOs), shock locations and its strength vary whenthe system passes through hard, hard-intermediate, soft-intermediate, and softstates. We find pieces of evidence of monotonically increasing and decreasingnature of QPO frequencies depending on the variation of ARR during rising anddeclining phases. Interestingly, on days of transition from hard state tohard-intermediate spectral state (during the rising phase) or vice-versa(during decline phase), ARR is observed to be locally maximum. Non-constancy ofARR while obtaining reasonable fits points to the presence of two independentcomponents in the flow.

Characterization of GX 339-4 outburst of 2010-11: analysis by xspec using two component advective flow model