Forecasts for warm dark matter from photometric galaxy surveys

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2018-11-01

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We present a Fisher matrix forecast for the sensitivity on the mass of a thermal warm dark matter (WDM) particle from current (DES-like) and future (LSST-like) photometric galaxy surveys using the galaxy angular power spectrum. We model the non-linear clustering using a modified Halo Model proposed to account for WDM effects. We estimate that from this observable alone a lower bound of mwdm > 647 eV (mwdm > 126 eV) for the LSST (DES) case could be obtained.

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Dark matter, Large-scale structure of Universe, Surveys

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Monthly Notices of the Royal Astronomical Society, v. 481, n. 1, p. 1290-1299, 2018.