Can decaying sterile neutrinos account for all dark matter?
arXiv:1602.08168 · doi:10.1007/s10509-016-2703-6
Abstract
The recent discovery of unexplained X-ray line of keV emitted from the Perseus cluster of galaxies and M31 and the excess X-ray line of keV emitted from the Milky Way center may indicate that dark matter would decay. In this article, I show that approximately 80 \% of dark matter being 7.1 keV sterile neutrinos and 20 \% of dark matter being 17.4 keV sterile neutrinos can satisfactorily explain the observed X-ray lines and account for all missing mass. No free parameter is needed in this model. This scenario is also compatible with current robust observational constraints from the matter power spectrum in large-scale structures and would alleviate the challenges faced by the existing dark matter models.
Accepted in Astrophysics and Space Science
References in corpus (20)
- Too big to fail? The puzzling darkness of massive Milky Way subhaloes
- Baryon effects on the internal structure of LCDM halos in the EAGLE simulations
- Can sterile neutrinos be the dark matter?
- Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector
- Can sterile neutrinos be ruled out as warm dark matter candidates?
- Spatial distribution of interstellar gas in the innermost 3 kpc of our Galaxy
- Where to find a dark matter sterile neutrino?
- Evidence for dark matter in the inner Milky Way
- Discovery of a 3.5 keV line in the Galactic Center and a Critical Look at the Origin of the Line Across Astronomical Targets
- Resonantly-Produced 7 keV Sterile Neutrino Dark Matter Models and the Properties of Milky Way Satellites
- Separating baryons and dark matter in cluster cores: a full 2-D lensing and dynamic analysis of Abell 383 and MS2137-23
- Constraints on decaying Dark Matter from XMM-Newton observations of M31
- Searching for decaying dark matter in deep XMM-Newton observation of the Draco dwarf spheroidal
- Where do the 3.5 keV photons come from? A morphological study of the Galactic Center and of Perseus
- Deep XMM Observations of Draco rule out at the 99% Confidence Level a Dark Matter Decay Origin for the 3.5 keV Line
- The Flattened Dark Matter Halo of M31 as Deduced from the Observed HI Scale Heights
- On the average density profile of dark-matter halos in the inner regions of massive early-type galaxies
- Comment on "Dark matter searches going bananas: the contribution of Potassium (and Chlorine) to the 3.5 keV line"
- Comment on the paper "Dark matter searches going bananas: the contribution of Potassium (and Chlorine) to the 3.5 keV line" by T. Jeltema and S. Profumo
- A tight scaling relation of dark matter in galaxy clusters