The paper “The destabilization of shear layers by asymmetric confinement and stratification” authored by Matt Turner has been accepted for publication in the Journal of Fluid Mechanics. The paper provides an extensive study into the absolute and convective stability properties of an inhomogeneous  two-dimensional mixing layer when subjected to axisymmetric confinement. The flow is analysed using spatio-temporal stability analysis, which identifies the long-time growth/decay behaviour by seeking special saddle points in the complex wavenumber plane. The figure below shows an example of the complex wavenumber plane, including the inversion contour, taken from Figure 6 of the paper. The paper shows that asymmetric confinement can have a destabilizing effect on the absolute instability of the flow, which is contrary to the case of temporary stability, where asymmetric confinement usually leads to stabilization. The author final copy of the paper can be found here .