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arXiv 2009.06607astro-ph.COgr-qchep-phhep-th
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NANOGrav发现了宇宙弦的第一个证据吗?

Has NANOGrav found first evidence for cosmic strings?

Simone Blasi, Vedran Brdar, Kai Schmitz

摘要:

北美纳赫兹观测站的引力波(NANOGrav)最近报告了强有力的证据,随机共谱过程影响脉冲星定时残差在其12.5年的数据集。我们证明,这个过程承认在早期宇宙中的宇宙弦网络发射的随机引力波背景的解释。我们研究了稳定的Nambu-Goto弦依赖于它们的张力$Gμ$和环的大小$α$,并表明整个可行的参数空间将通过一系列未来的实验来探索。

英文摘要:

The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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