We present the analysis of a Suzaku observation of the Ophiuchus galaxy cluster .
We confirmed that the cluster has a cool core .
While the temperature of the intracluster medium ( ICM ) decreases toward the center , the metal abundance increases .
Except for the core ( r \lesssim 50 kpc ) , the cluster is hot ( \sim 9 –10 keV ) and is almost isothermal for r \lesssim 1 Mpc ; the latter contradicts a previous study .
We do not detect the variation of the redshift of the ICM in the cluster ; the upper limit of the velocity difference is 3000 \ > km\ > s ^ { -1 } .
The iron line ratios in X-ray spectra indicate that the ICM has reached the ionization equilibrium state .
From these results , we conclude that the Ophiuchus cluster is not a major merger cluster but one of the hottest clusters with a cool core .
We obtain the upper limit of non-thermal emission from the cluster , which is consistent with both the recent claimed detection with INTEGRAL and the recent upper limits with the Swift/BAT .
If the cluster has bright non-thermal emission as suggested by the INTEGRAL measurement , it is probably not due to a recent major cluster merger .