Authors: George Rajna
Leslie Rosenberg, a physicist with the University of Washington has published a paper in Proceedings of the National Academy of Sciences, describing the current state of research that involves investigating the possibility that axions are what make up dark matter.  Physicists from MIT and elsewhere have performed the first run of a new experiment to detect axions-hypothetical particles that are predicted to be among the lightest particles in the universe.  If they exist, axions, among the candidates for dark matter particles, could interact with the matter comprising the universe, but at a much weaker extent than previously theorized. New, rigorous constraints on the properties of axions have been proposed by an international team of scientists.  The intensive, worldwide search for dark matter, the missing mass in the universe, has so far failed to find an abundance of dark, massive stars or scads of strange new weakly interacting particles, but a new candidate is slowly gaining followers and observational support.  "We invoke a different theory, the self-interacting dark matter model or SIDM, to show that dark matter self-interactions thermalize the inner halo, which ties ordinary dark matter and dark matter distributions together so that they behave like a collective unit."  Technology proposed 30 years ago to search for dark matter is finally seeing the light.  They're looking for dark matter-the stuff that theoretically makes up a quarter of our universe.  Results from its first run indicate that XENON1T is the most sensitive dark matter detector on Earth. 
Comments: 43 Pages.
[v1] 2019-03-31 06:35:49
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