Pulsar velocities and dark matter hint at a singlet neutrino

Details Pulsar velocities and dark matter hint at a singlet neutrino Pulsar velocities and dark matter hint at a singlet neutrino

2003-11-11

arxiv.org/abs/astro-ph/0311240v2

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure; talk presented at The 6th RESCEU International Symposium "Frontier in Astroparticle Physics and Cosmology",

Scientific paper

Two astrophysical puzzles, the origin of pulsar velocities and that of dark matter, may have a simultaneous explanation if there exists a sterile neutrino with a mass in the 1-20 keV range and a small mixing (of order 10^{-4}) with the electron neutrino. Although the mixing is too small for direct detection, future observations of the X-ray telescopes, as well as the gravity waves detectors, such as LIGO and LISA, may be able to confirm or rule out the existence of such a neutrino.

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