THE HALO, HOT SPOTS, AND JET/CLOUD INTERACTION OF PKS 215369

We report Chandra X-Ray Observatory and 1.4 GHz Australian Long Baseline Array (LBA) observations of the radio galaxy PKS 215369 and its environment. The Chandra image reveals a roughly spherical halo of hot gas extending out to 30 kpc around PKS 215369. Two depressions in the surface brightness of the X-ray halo cor-respond to the large-scale radio lobes, and interpreting these as cavities inflated with radio plasma, we infer a jet power of 4; 1042 ergs s1. Both radio lobes contain hot spots that are detected by Chandra. In addition, the southern hot spot is detected in the 1.4 GHz LBA observation, providing the highest linear resolution image of a radio lobe hot spot to date. The northern hot spot was not detected in the LBA observation. The radio to X-ray spectra of the hot spots are consistent with a simple power-law emission model. The nucleus has an X-ray spectrum typical of a type 1 active galactic nucleus, and the LBA observation shows a one-sided nuclear jet on 0B1 scales. Approximately 1000 northeast of the nucleus, X-ray emission is associated with an extranuclear cloud. The X-ray emission from the cloud can be divided into two regions, an unresolved western component associated with a knot of radio emission (in a low-resolution map), and a spatially extended eastern component aligned with the parsec-scale jet and associated with highly ionized optical line–emitting clouds. The X-ray spectrum of the eastern com-ponent is very soft ( > 4:0 for a power-law model, or kT ’ 0:22 keV for a thermal plasma). The LBA observatio