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Based on a detailed analysis of the high-quality Chandra, XMM-Newton, andSuzaku data of the X-ray bright cluster of galaxies Abell 1795, we report clearevidence for a two-phase intracluster medium (ICM) structure, which consists ofa cool (with a temperature T = 2.0-2.2 keV) and a hot (T = 5.0-5.7 keV)component that coexist and dominate the X-ray emission at least in the central80 kpc. A third weak emission component (T = 0.8 keV) is also detected withinthe innermost 144 kpc and is ascribed to a portion of inter-stellar medium(ISM) of the cD galaxy. Deprojected spectral analysis reveals flat radialtemperature distributions for both the hot phase and cool phase components.These results are consistent with the ASCA measurements reported in Xu et al.(1998), and resemble the previous findings for the Centaurus cluster (e.g.,Takahashi et al. 2009). By analyzing the emission measure ratio and gas metalabundance maps created from the Chandra data, we find that the cool phasecomponent is more metal-enriched than the hot phase one in 50-100 kpc region,which agrees with that found in M87 (Simionescu et al. 2008). The coexistenceof the cool phase and hot phase ICM cannot be realized by bubble uplifting fromactive galactic nuclei (AGN) alone. Instead, the two-phase ICM properties arebetter reconciled with a cD corona model (Makishima et al. 2001). (Abridged)

Two-Phase ICM in the Central Region of the Rich Cluster of Galaxies Abell 1795: A Joint Chandra, XMM-Newton, and Suzaku View