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    Jack Setford: New Probes of Dark Complexity

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    Description

    Dark Matter could have complex interactions and consist of multiple stable relics, in analogy to the richness of the visible sector. Well motivated models addressing the hierarchy problem, such as the Mirror Twin Higgs, suggest that a subcomponent of dark matter could be composed of "dark atoms". Atomic dark matter could have cooled from a halo into a dark disk, possibly collapsing further into compact objects with their own version of nuclear fusion. I will discuss this tantalising possibility and show that Mirror Stars can be discovered in optical and X-ray searches up to 1000 light years away, even for very small values of the kinetic mixing parameter. I will also present new constraints on atomic dark matter from the cooling of white dwarfs. Accumulated atomic dark matter in the cores of white dwarf stars can have a significant effect on the rate of their cooling and luminosity function. White dwarf cooling has the potential to probe vast portions of the atomic dark matter parameter space, across many orders of magnitude in mass.

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    Meeting ID: 991 1368 8676
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    Meeting ID: 991 1368 8676
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    Meeting ID: 991 1368 8676
     

    New Probes of Dark Complexity.pdf
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