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The Galactic transient black hole candidate H 1743--322 exhibited a longduration outburst in 2003 after more than two and a half decades of inactivity.The 2003 event was extensively studied in multi-wavelength bands by manygroups. The striking feature is that the total energy released is extremelyhigh as compared to that in tens of outbursts which followed. In this paper, welook at this event and study both the spectral and temporal properties of thesource using two component advective flow (TCAF) paradigm. We extract accretionflow parameters for each observation from spectral properties of the decayphase and determine the mass of the black hole. We computed the energy releasedduring all the known outbursts since 2003 and showed that on an average, theenergy release in an outburst is proportional to the duration of the quiescentstate just prior to it, with the exception of the 2004 outburst. A constantrate of supply of matter from the companion cannot explain the energy releasein 2004 outburst. However, if the energy release of 2003 is incomplete and theleftover is released in 2004, then the companion's rate of matter supply can beconstant since 1977 till date. We believe that erratic behaviour of viscosityat the accumulation radius $X_p$ of matter as well as location the $X_p$itself, rather than the random variation of mass transfer rate from thecompanion, could be responsible for non-uniformity in outburst pattern. Wediscuss several factors on which the waiting time and duration of the nextoutburst could depend.

Delayed Outburst of H 1743--322 in 2003 and relation with its other outbursts