Constraints on sterile neutrinos as dark matter candidates from the diffuse X-ray background

By Alexey Boyarsky, A. Neronov, Oleg Ruchayskiy, M. Shaposhnikov. 2005

161 citations recorded by the source corpus.

Sterile neutrinos with masses in the keV range are viable candidates for the warm dark matter. We analyze existing data for the extragalactic diffuse X-ray background for signatures of sterile neutrino decay. The absence of detectable signal within current uncertainties of background measurements puts model-independent constraints on allowed values of sterile neutrino mass and mixing angle, which we present in this work.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4e4317a4604cd071aeebe55ed4d4fdbf604f5f74

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In Nuclear and High Energy Physics

Citations in the corpus

DETECTION OF AN UNIDENTIFIED EMISSION LINE IN THE STACKED X-RAY SPECTRUM OF GALAXY CLUSTERS (2014, background): “…the unresolved cosmic X-ray background (CXB) in the Chandra Deep Fields (Abazajian et al. 2007) and the XMM-Newton blank-sky background spectrum (Boyarsky et al. 2006), Chandra observation of the Bullet cluster (Boyarsky et al. 2008), Chandra observations of M31 (Watson et al. 2012; Horiuchi et…”
Constraining light dark matter with diffuse X-ray and gamma-ray observations (2013, unknown): “, [36, 38–40, 45–51, 51– 57].”
Lyman-alpha constraints on warm and on warm-plus-cold dark matter models (2008, methodology): “To this end, one should rescale the X-ray constraints of [41, 43 , 44, 45, 46, 47, 120, 121, 122, 123] and the results of the NRP DM abundance computation [78, 119] by a factor Fwdm < 1. We can compare the upper bounds rescaled in this way with the results of our CWDM runs (see Fig. 14).”
Dark Matter, Baryogenesis and Neutrino Oscillations from Right Handed Neutrinos (2012, background): “Over the past years, different aspects of the νMSM have been explored using cosmological, astrophysical and experimental constraints [1–3, 6–30].”
A lower bound on the mass of dark matter particles (2008, background): “4) with the upper ones, coming from astrophysical (X-ray) constraints on the possible flux from sterile neutrino DM decay [126–136].”