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Searching for Light in the Darkness: Bounds on ALP Dark Matter with the optical MUSE-Faint survey

Authors
  • Regis, Marco
  • Taoso, Marco
  • Vaz, Daniel
  • Brinchmann, Jarle
  • Zoutendijk, Sebastiaan L.
  • Bouché, Nicolas
  • Steinmetz, Matthias
Publication Date
Sep 22, 2020
Source
HAL-Descartes
Keywords
Language
English
License
Unknown
External links

Abstract

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.

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