Dark winds on the horizon: Prospects for detecting neutrino and hot dark matter wakes in large-scale structure
The study explores cosmological wakes left by moving Cold Dark Matter structures due to neutrinos and Hot Dark Matter (HDM). It finds these wakes are unlikely to be seen with standard 2D weak lensing surveys. However, high-significance detection is possible using idealistic 3D maps of an HDM tracer if the effective free-streaming length is sufficiently small.