A lower bound on the mass of dark matter particles

@article{Boyarsky2008ALB,
  title={A lower bound on the mass of dark matter particles},
  author={Alexey Boyarsky and Oleg Ruchayskiy and Dmytro Iakubovskyi},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2008},
  volume={2009},
  pages={005-005}
}
We discuss the bounds on the mass of Dark Matter (DM) particles, coming from the analysis of DM phase-space distribution in dwarf spheroidal galaxies (dSphs). After reviewing the existing approaches, we choose two methods to derive such a bound. The first one depends on the information about the current phase space distribution of DM particles only, while the second one uses both the initial and final distributions. We discuss the recent data on dSphs as well as astronomical uncertainties in… 

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References

SHOWING 1-10 OF 176 REFERENCES

Constraints on dark matter particles from theory, galaxy observations and N-body simulations

Mass bounds on dark matter (DM) candidates are obtained for particles that decouple in or out of equilibrium while ultrarelativistic with arbitrary isotropic and homogeneous distribution functions. A

Constraints on the parameters of radiatively decaying dark matter from the dark matter halos of the Milky Way and Ursa Minor

Aims. We improve the earlier restrictions on parameters of the dark matter (DM) in the form of a sterile neutrino. Methods. The results were obtained from non-observing the DM decay line in the X-ray

Can sterile neutrinos be ruled out as warm dark matter candidates?

Adding constraints based on x-ray fluxes from the Andromeda galaxy, it is found that dark matter particles cannot be sterile neutrinos, unless they are produced by a nonstandard mechanism (resonant oscillations, coupling with the inflation) or get diluted by a large entropy release.

Constraints on decaying Dark Matter from XMM-Newton observations of M31

We derive constraints on the parameters of the radiatively decaying dark matter (DM) particle, using the XMM-Newton EPIC spectra of the Andromeda galaxy (M31). Using the observations of the outer

Constraints on Parameters of Radiatively Decaying Dark Matter from the Galaxy Cluster 1E 0657–56

We derived constraints on parameters of a radiatively decaying warm dark matter particle, e.g., the mass and mixing angle for a sterile neutrino, using Chandra X-ray spectra of galaxy cluster 1E

Firm bounds on the neutrino mass from the distribution of dark matter in galaxies

We explore the possibility that the dark or missing matter in galaxies is due to massive neutrinos. Two approaches are described which give lower mass limits for a single neutrino type in terms of

The Observed Properties of Dark Matter on Small Spatial Scales

A synthesis of recent photometric and kinematic data for several of the most dark matter dominated galaxies, the dwarf spheroidal Galactic satellites, and compare them to star clusters provides new information about the nature of the dominant form of dark matter.

Constraining dark matter properties with SPI

Using the high-resolution spectrometer SPI on board the International Gamma-Ray Astrophysics Laboratory (INTEGRAL) , we search for a spectral line produced by a dark matter (DM) particle with a mass

Lyman-alpha constraints on warm and on warm-plus-cold dark matter models

We revisit Lyman-alpha bounds on the dark matter mass in Lambda Warm Dark Matter (Lambda-WDM) models, and derive new bounds in the case of mixed Cold plus Warm models (Lambda-CWDM), using a set up

Evolution of the phase-space density of dark matter haloes and mixing effects in merger events

Cosmological N-body simulations were performed to study the evolution of the phase-space density Q = ρ/σ 3 of dark matter haloes. No significant differences in the scale relations Q ∝ σ -2.1 or Q ∝ M
...