Left panel: adaptively smoothed Chandra X-ray image (Obs. ID 497) in the 0.2–10 keV band of the galaxy cluster A2199 with the VLA contour levels at 8415 MHz overlaid. Pronounced X-ray cavities can be identified in correspondence of the radio galaxy lobes. Top right panel: deprojected thermal gas density profile (Johnstone et al. 2002). Bottom right panel: pixel distribution of the rotation measure image as a function of the distance from the cluster center.