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We present new, deep (245 ks) Chandra observations of the galaxy clusterAbell 1664 ($z = 0.1283$). These images reveal rich structure, includingelongation and accompanying compressions of the X-ray isophotes in the NE-SWdirection, suggesting that the hot gas is sloshing in the gravitationalpotential. This sloshing has resulted in cold fronts, at distances of 55, 115and 320 kpc from the cluster center. Our results indicate that the core ofA1664 is highly disturbed, as the global metallicity and cooling time flattenat small radii, implying mixing on large scales. The central AGN appears tohave recently undergone a mechanical outburst, as evidenced by our detection ofcavities. These cavities are the X-ray manifestations of radio bubbles inflatedby the AGN, and may explain the motion of cold molecular CO clouds previouslyobserved with ALMA. The estimated mechanical power of the AGN, using theminimum energy required to inflate the cavities as a proxy, is $P_{\rm cav} =(1.1 \pm 1.0) \times 10^{44} $ erg s$^{-1}$, which may be enough to drive themolecular gas flows, and offset the cooling luminosity of the ICM, at $L_{\rmcool} = (1.90 \pm0.01)\times 10^{44}$ erg s$^{-1}$. This mechanical power isorders of magnitude higher than the measured upper limit on the X-rayluminosity of the central AGN, suggesting that its black hole may be extremelymassive and/or radiatively inefficient. We map temperature variations on thesame spatial scale as the molecular gas, and find that the most rapidly coolinggas is mostly coincident with the molecular gas reservoir centered on the BCG'ssystemic velocity observed with ALMA and may be fueling cold accretion onto thecentral black hole.

Revealing a Highly-Dynamic Cluster Core in Abell 1664 with Chandra