PT Journal
AU Caputo, A
   Regis, M
   Taoso, M
TI Searching for sterile neutrino with X-ray intensity mapping
SO Journal of Cosmology and Astroparticle Physics
JI J. Cosmol. Astropart. Phys.
PY 2020
BP 001
EP 21pp
VL 03
IS 3
DI 10.1088/1475-7516/2020/03/001
LA English
DE X-ray telescopes; dark matter experiments; dark matter theory; power spectrum
AB The cosmological X-ray emission associated to the possible radiative decay of sterile neutrinos is composed by a collection of lines at different energies. For a given mass, each line corresponds to a given redshift. In this work, we cross correlate such line emission with catalogs of galaxies tracing the dark matter distribution at different redshifts. We derive observational prospects by correlating the X-ray sky that will be probed by the eROSITA and Athena missions with current and near future photometric and spectroscopic galaxy surveys. A relevant and unexplored fraction of the parameter space of sterile neutrinos can be probed by this technique.
ER