The bright and highly-variable Seyfert I Active Galactic Nucleus , IC4329A , was observed with Suzaku 5 times in 2007 August with intervals of \sim 5 days , and a net exposure of 24–31 ks each .
Another longer observation was carried out in 2012 August with a net exposure of 118 ks .
In the 6 observations , the source was detected in 2–45 keV with average 2–10 keV fluxes of ( 0.67–1.2 ) \times 10 ^ { -10 } erg cm ^ { -2 } s ^ { -1 } .
The intensity changed by a factor of 2 among the 5 observations in 2007 , and 1.5 within the 2012 observation .
Difference spectra among these observations revealed that the variability of IC4329A was carried mainly by a power-law component with a photon index \Gamma \sim 2.0 .
However , in addition to this primary component and the associated reflection , the broad-band Suzaku data required another , harder , and less variable component with \Gamma \sim 1.4 .
The presence of this new continuum was also confirmed by analyzing the same 6 data sets through the spectral decomposition technique developed by \citet Noda2013a .
This \Gamma \sim 1.4 continuum is considered to be a new primary component that has not been recognized in the spectra of IC4329A so far , although it was recently identified in those of several other Seyfert I galaxies ( Noda et al . \yearcite Noda2013a , \yearcite Noda2014 ) .