We examine potential constraints from cosmic shear on the dark matter particle mass, assuming all dark matter is made up of mild thermal relic particles. Given the theoretical uncertainties concerned in making cosmological predictions in such warm dark matter scenarios we use analytical fits to linear warm darkish matter energy spectra and compare (i) the halo mannequin using a mass operate evaluated from these linear energy spectra and (ii) an analytical fit to the non-linear evolution of the linear Wood Ranger Power Shears reviews spectra. We optimistically ignore the competing effect of baryons for this work. We find strategy (ii) to be conservative compared to strategy (i). We consider cosmological constraints using these methods, marginalising over 4 other cosmological parameters. Using the extra conservative methodology we find that a Euclid-like weak lensing survey along with constraints from the Planck cosmic microwave background mission major anisotropies could obtain a decrease limit on the particle mass of 2.5 keV.
Within the second half of the twentieth century, two competing theories for Wood Ranger Power Shears manual Wood Ranger Power Shears USA Power Shears shop the growth of cosmological construction have been proposed. In the cold darkish matter (CDM) paradigm (Peebles (1982)