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Kantrh t1_j47hta6 wrote

Reply to comment by Aseyhe in How do we know that dark matter isn't just ordinary matter our instruments can't detect? by jmite

The article says it rejects the sterile neutrino hypothesis quite strongly, although it doesn't say it rules them out altogether from existing.

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Aseyhe t1_j47qwh0 wrote

Yeah, but in context it's the hypothesis that sterile neutrinos explain the anomaly. I edited the post above after checking the research article.

They also say, > we reject with high CL the hypothesis of a sterile neutrino of mass around 1 eV.

Viable sterile neutrino dark matter models are generally at least 1000 times heavier than that, in the keV range. That's because if the dark matter particle were too light, its thermal motion would eliminate variations in the density of the universe at the scales of dwarf galaxies, preventing those galaxies (which we observe and hence know to exist) from forming.

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