Is there a giant Kelvin–Helmholtz instability in the sloshing cold front of the Perseus cluster?

@article{Walker2017IsTA,
  title={Is there a giant Kelvin–Helmholtz instability in the sloshing cold front of the Perseus cluster?},
  author={S. A. Walker and Julie Hlavacek-Larrondo and Marie-Lou Gendron-Marsolais and Andrew C. Fabian and Huib T. Intema and Jeremy S Sanders and J. T. Bamford and R. J. van Weeren},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2017},
  volume={468},
  pages={2506-2516}
}
Deep observations of nearby galaxy clusters with Chandra have revealed concave 'bay' structures in a number of systems (Perseus, Centaurus and Abell 1795), which have similar X-ray and radio properties. These bays have all the properties of cold fronts, where the temperature rises and density falls sharply, but are concave rather than convex. By comparing to simulations of gas sloshing, we find that the bay in the Perseus cluster bears a striking resemblance in its size, location and thermal… 

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