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We study accretion flow dynamics of Galactic transient black hole candidate(BHC) H 1743-322 during its 2010 outburst by analyzing spectral data using TwoComponent (Keplerian and sub-Keplerian) Advective Flow (TCAF) solution, afterits inclusion in XSPEC as a local model. We compare our TCAF solution fittedresults with combined disk black body and power-law model fitted results andfind a similar smooth variation of thermal (Keplerian or disk black body) andnon-thermal (power-law or sub-Keplerian) fluxes/rates in two types of modelfits. For a spectral analysis, 2.5-25 keV spectral data from RXTE PCAinstrument are used. From the TCAF solution fit, accretion flow parameters,such as Keplerian rate, sub-Keplerian rate, location of centrifugal pressuresupported shock and strength of the shock are extracted, thus providing adeeper understanding of accretion process and properties of accretion disksaround BHC H 1743-322 during its X-ray outburst. Based on the halo to diskaccretion rate ratio (ARR), shock properties, accretion rates and nature ofquasi-periodic oscillations (QPOs, if observed) entire outburst is classifiedinto four different spectral states, such as, hard, hard-intermediate,soft-intermediate, and soft. From time variation of intrinsic flow parametersit appears that their evolutions in decline phase do not retrace path of risingphase. Since our current model does not include magnetic fields, spectralturnover at energies beyond 500-600 keV cannot be explained.

Inference on accretion flow dynamics using TCAF solution from the analysis of spectral evolution of H 1743-322 during 2010 outburst