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Dark dwarfs lurking at the center of our galaxy might hint at the nature of dark matter

  • A UK-Hawaii research team introduced dark dwarfs at the Milky Way's center, suggesting they could reveal dark matter's nature.
  • Brown dwarfs can trap dark matter, which then annihilates to turn them into dark dwarfs, as the process releases energy and heats these objects.
  • Dark dwarfs have about 8% of the Sun’s mass, emit faint light from gravitational contraction, and lack nuclear fusion, according to Sakstein.
  • Current observatories like JWST and SKA could detect dark dwarfs via lithium-7 signatures and 21-cm cosmology, testing dark matter models.
  • Detection of dark dwarfs would strongly support the WIMP hypothesis and guide future SKA 21-cm cosmology observations to explore dark matter's nature.
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Phys.org broke the news in United Kingdom on Monday, July 7, 2025.
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