 A deep Chandra observation of the Perseus cluster: shocks and ripples by A. C. Fabian and others

Monthly Notices of the Royal Astronomical Society 344, L43–L47. Primary X-ray analysis of radio-bubble-associated fronts and ripples, with a proposed mechanical heating/cooling balance. arxiv.org/abs/astro-ph/0306036 doi.org/10.1046/j.1365-8711.2003.06902.x