We present new , deep observations of the Phoenix cluster from the Chandra X-ray Observatory , the Hubble Space Telescope , and the Karl Jansky Very Large Array .
These data provide an order of magnitude improvement in depth and/or angular resolution at X-ray , optical , and radio wavelengths , yielding an unprecedented view of the core of the Phoenix cluster .
We find that the one-dimensional temperature and entropy profiles are consistent with expectations for pure-cooling hydrodynamic simulations and analytic descriptions of homogeneous , steady-state cooling flow models .
In particular , the entropy profile is well-fit by a single power law at all radii , with no evidence for excess entropy in the core .
In the inner \sim 10 kpc , the cooling time is shorter by an order of magnitude than any other known cluster , while the ratio of the cooling time to freefall time ( t _ { cool } / t _ { ff } ) approaches unity , signaling that the ICM is unable to resist multiphase condensation on kpc scales .
When we consider the thermodynamic profiles in two dimensions , we find that the cooling is highly asymmetric .
The bulk of the cooling in the inner \sim 20 kpc is confined to a low-entropy filament extending northward from the central galaxy , with t _ { cool } / t _ { ff } \sim 1 over the length of the filament .
This northern filament is significantly absorbed , suggesting the presence of \sim 10 ^ { 10 } M _ { \odot } in cool gas that is absorbing soft X-rays .
We detect a substantial reservoir of cool ( \sim 10 ^ { 4 } K ) gas ( as traced by the [ O ii ] \lambda \lambda 3726,3729 doublet ) , which is coincident with the low-entropy filament .
The bulk of this cool gas is draped around and behind a pair of X-ray cavities , presumably bubbles that have been inflated by radio jets , which are detected for the first time on kpc scales .
These data support a picture in which AGN feedback is promoting the formation of a multiphase medium via a combination of ordered buoyant uplift and locally enhanced turbulence .
These processes ought to counteract the tendency for buoyancy to suppress condensation , leading to rapid cooling along the jet axis .
The recent mechanical outburst has sufficient energy to offset cooling , and appears to be coupling to the ICM via a cocoon shock , raising the entropy in the direction orthogonal to the radio jets .