Abstract
Superconducting cosmic strings1, predicted in some elementary particle theories, can have dramatic cosmological consequences2–6. Ostriker, Thompson and Witten (OTW) have shown3 that the low-frequency electromagnetic radiation from superconducting closed loops can sweep away the surrounding plasma, and have identified the resulting bubbles of radiation with the voids observed in the large-scale distribution of galaxies. Here I discuss some observational consequences of the OTW model. It will be shown that it predicts observable fluxes of γ-rays and ultra-high energy cosmic rays from long strings stretching across the visible universe.
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Vilenkin, A. Gamma-rays from superconducting cosmic strings. Nature 332, 610–611 (1988). https://doi.org/10.1038/332610a0
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DOI: https://doi.org/10.1038/332610a0
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