Astrophysics

   

Warm Dark Matter

Authors: George Rajna

Detailed new maps of the distribution of hydrogen gas absorption could be used to support-or exclude-this warm dark matter possibility (see the figure), and shed light on this mysterious cosmic component. [28] Dr. Wojciech Hellwing, coordinator of the project and Research Fellow at the Centre for Theoretical Physics of the Polish Academy of Sciences, discusses the project's findings so far. [27] Among the potential candidates that come into question are weakly interacting massive particles or WIMPs. [26] 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. [25] 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. [24] "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." [23] Technology proposed 30 years ago to search for dark matter is finally seeing the light. [22] They're looking for dark matter-the stuff that theoretically makes up a quarter of our universe. [21] Results from its first run indicate that XENON1T is the most sensitive dark matter detector on Earth. [20]

Comments: 44 Pages.

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Submission history

[v1] 2019-08-05 06:21:38

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