Rossi X-ray Timing Explorer ( RXTE ) /Proportional Counter Array ( PCA ) observations of IGR J19294+1816 covering two outburst episodes are reported .
The first outburst happened during MJD 54921-54925 ( 2009 C.E . )
and the second one happened during MJD 55499-55507 ( 2010 C.E . ) .
In both the cases the PCA observations were made during the decay phase of the outburst , with the source exhibiting temporal and spectral evolution with the change in flux .
At the bright flux level an absorption feature at 35.5 keV is detected in the spectra which may be attributed to Cyclotron Resonance Scattering Feature corresponding to a magnetic field of B = 4.13 \times 10 ^ { 12 } Gauss .
This is also detected at a lower significance in two other observations .
In addition an Fe line emission at 6.4 keV is prominently detected during the highest flux .
X-ray pulsations are detected in 9 out of 10 observations ; no pulsations were found in the observation with the lowest flux level .
During this observation with the lowest flux the pulsation phenomenon becomes detectable only at the soft X-ray bands .