Primordial Black Hole Neutrinogenesis of Sterile Neutrino Dark Matter
Muping Chen, Graciela B. Gelmini, Philip Lu, Volodymyr Takhistov

TL;DR
This paper explores a novel mechanism for producing sterile neutrino dark matter via primordial black hole evaporation, resulting in a distinct spectrum and potential observational signatures like X-ray and gravitational wave coincidences.
Contribution
It introduces a new production process for sterile neutrinos that does not rely on active-sterile mixing, expanding dark matter models and observational prospects.
Findings
Sterile neutrinos can be produced by black hole evaporation with a unique spectrum.
Produced sterile neutrinos could serve as warm dark matter in a broad mass range.
Potential observational signatures include coincident X-ray and gravitational wave signals.
Abstract
Sterile neutrinos are well-motivated and actively searched for new particles that would mix with the active neutrinos. We study their phenomenology when they are produced in the evaporation of early Universe black holes, a novel production mechanism that differs from all others and does not depend on the active-sterile mixing. The resulting hotter sterile neutrinos have a distinct spectrum and could be warm dark matter in the 0.3 MeV to 0.3 TeV mass range, distinct from the typical keV range. The possible coincidence of X-rays and gravitational waves is a unique novel signature of our scenario.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsDark Matter and Cosmic Phenomena · Cosmology and Gravitation Theories · Astrophysics and Cosmic Phenomena
