Periodic Fast Radio Bursts from Axion Emission by Cosmic Superstrings
arXiv:2003.07275
Abstract
We propose that the periodic fast radio bursts of FRB 180916.J0158+65 are sourced by axion emission (mass eV) from cosmic superstrings. Some of the emitted axions are converted to photons by magnetic fields as they travel along the line of sight to Earth. An impulsive burst of axion emission generates a photon signal typically lasting for milliseconds and varying with frequency in the observed manner. We find a range of parameters in our cosmic string network model consistent with the properties of FRB 180916.J0158+65. We suggest followup gravitational wave observations to test our model.
arXiv comment15 pages, 1 figure
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