Radio bursts from superconducting strings
Yi-Fu Cai, Eray Sabancilar, Tanmay Vachaspati
DOI 10.1103/PhysRevD.85.023530 · Physical Review D
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Abstract
We show that radio bursts from cusps on superconducting strings are linearly polarized, thus providing a signature that can be used to distinguish them from astrophysical sources. We write the event rate of string-generated radio transients in terms of observational variables, namely, the event duration and flux. Assuming a canonical set of observational parameters, we find that the burst event rate can be quite reasonable, e.g., order ten a year for grand unified strings with 100 TeV currents, and a lack of observed radio bursts can potentially place strong constraints on particle physics models.
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