Browsing by Author "Regis, Marco"

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    Searching for light in the darkness: Bounds on ALP dark matter with the optical MUSE-faint survey
    (Amsterdam : North-Holland Publ., 2021) Regis, Marco; Taoso, Marco; Vaz, Daniel; Brinchmann, Jarle; Zoutendijk, Sebastiaan L.; Bouché, Nicolas F. Matthias; Steinmetz
    We use MUSE spectroscopic observations of the dwarf spheroidal galaxy Leo T between 470 and 935 nm to search for radiative decays of axion like particles (ALPs). Under the assumption that ALPs constitute the dark matter component of the Leo T halo, we derive bounds on the effective ALP-two-photon coupling. We improve existing limits by more than one order of magnitude in the ALP mass range 2.7-5.3 eV.