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We report the discovery with Chandra of X-ray-emitting gas associated withthe jet-cloud interaction in the radio galaxy 3C 277.3 (Coma A), a source thatfalls in the most important power range for radio-mode feedback in theUniverse. This hot gas, heated by the jet, dominates the mass of the cloudwhich is responsible for an extreme projected deflection of the kpc-scale radiojet. Highly absorbed X-ray emission from the nucleus of 3C 277.3 confirms thatthe jet lies close to the plane of the sky and so has a large intrinsicdeflection. We detect group gas on the scale of the radio lobes, and see X-raycavities coincident with the brightest radio emission, with the lobes embracedby X-ray enhancements that we argue are the result of shocks. Theanti-correlation between the locations of X-ray arms and H$\alpha$-emittingfilaments that are believed to have originated from a merger with one or moregas-rich galaxies suggests that shocks advancing around the lobe are inhibitedby the dense colder material. Synchrotron X-ray emission is detected from theupstream edge of a second bright radio knot. X-rays are also detected from thelocation where an undetected counterjet enters the northern radio hotspot. Wesuggest that these X-rays are synchrotron radiation from a shock in asmall-scale substructure.

X-rays associated with the jet-cloud interacting radio galaxy 3C 277.3 (Coma A): implications for energy deposition