Fast radio bursts from axion stars moving through pulsar magnetospheres

Apr 14, 2020
6 pages
Published in:
  • Phys.Rev.D 103 (2021) 4, 043015
  • Published: Feb 24, 2021
e-Print:
DOI:

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Abstract: (APS)
We study the radio signals generated when an axion star enters the magnetosphere of a neutron star. As the axion star moves through the resonant region where the plasma-induced photon mass becomes equal to the axion mass, the axions can efficiently convert into photons, giving rise to an intense, transient radio signal. We show that a dense axion star with a mass ∼10-13  M⊙ composed of ∼10  μeV axions can account for most of the mysterious fast radio bursts.
Note:
  • Published version in Phys. Rev. D, 6 pages, 2 figures
  • Astrophysics and astroparticle physics
  • axion: star
  • axion: mass
  • star: mass
  • photon: mass
  • radio wave: emission
  • burst
  • neutron star
  • Doppler effect
  • plasma