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A search for annihilating dark matter in 47 Tucanae and Omega Centauri

Staveley-Smith, Lister; Bekki, Kenji; Westmeier, Tobias +1 more

A plausible formation scenario for the Galactic globular clusters 47 Tucanae (47 Tuc) and Omega Centauri $(ω$ Cen) is that they are tidally stripped remnants of dwarf galaxies, in which case they are likely to have retained a fraction of their dark matter cores. In this study, we have used the ultra-wide band receiver on the Parkes telescope (Murr…