Has NANOGrav Found First Evidence for Cosmic Strings?
Simone Blasi; Vedran Brdar; Kai Schmitz · 2021 · Physical Review Letters
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
The study found no significant effect — useful as a negative control or null benchmark for your own design.
Abstract
The North American Nanohertz Observatory for Gravitational Waves has recently reported strong evidence for a stochastic common-spectrum process affecting the pulsar timing residuals in its 12.5-year data set. We demonstrate that this process admits an interpretation in terms of a stochastic gravitational-wave background emitted by a cosmic-string network in the early Universe. We study stable Nambu-Goto strings in dependence of their tension Gμ and loop size α and show that the entire viable parameter space will be probed by an array of future experiments.
Abstract by Simone Blasi; Vedran Brdar; Kai Schmitz, Physical Review Letters (2021) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.1103/physrevlett.126.041305