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A Prime Suspect for Dark Matter Might Be Escaping From Neutron Stars Image: NASA/Chandra X-Ray Observatory (Fair Use) After axions were first theorized by physicists in the suburbs of Chicago 45 years ago, they quickly became a robust candidate for explaining dark matter. All this time, though, the ultra-small particles have remained hypothetical. Now, a team of astrophysicists have proposed that axions may be responsible for an excess of X-ray emissions seen coming from a group of neutron stars in our galaxy. Advertisement The stars dubbed the “Magnificent Seven” are neutron stars that emit low-frequency X-ray radiation from their surfaces. Neutron stars are the extremely dense afterlives of collapsed stars. They possess powerful magnetic fields, and, as their name would suggest, are constituted in large part by neutrons. The new research, published this week in the journal Physical Review Letters, focuses on a yet-unexplained bunch of high-frequency X-rays that the seven st

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