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Updated constraints on superconducting cosmic strings from the astronomy of fast radio bursts
The European Physical Journal C ( IF 4.2 ) Pub Date : 2020-06-03 , DOI: 10.1140/epjc/s10052-020-8064-x
Batool Imtiaz , Rui Shi , Yi-Fu Cai

In this article we update constraints on superconducting cosmic strings (SCSs) in the light of the recent observational developments of fast radio bursts (FRBs) astronomy. Assuming strings follow an exponential distribution characterized by a current, we show that two parameters in our context, which are the characteristic tension (\(G\mu \)) and a parameter which describes the aforementioned exponential distribution (\(I_c\)), can be constrained by FRB experiments. Particularly, we investigate data sets from Parkes and ASKAP. We looked at a parameter space where \(G\mu \sim [10^{-17}, 10^{-12}]\) and \(I_c\sim [10^{-1}, 10^{2}]\) GeV, and found our results show that Parkes jointly with ASKAP can constrain the parameter space for SCSs.

A preprint version of the article is available at ArXiv.


中文翻译:

快速无线电脉冲的天文学对超导宇宙弦的更新约束

在本文中,我们根据快速无线电脉冲串(FRB)天文学的最新观测发展,更新了对超导宇宙弦(SCS)的约束。假设字符串遵循以电流为特征的指数分布,我们将在上下文中显示两个参数,它们是特征张力(\(G \ mu \))和描述上述指数分布的参数(\(I_c \))可以通过FRB实验来约束。特别是,我们调查了Parkes和ASKAP的数据集。我们查看了一个参数空间,其中\(G \ mu \ sim [10 ^ {-17},10 ^ {-12}] \)\(I_c \ sim [10 ^ {-1},10 ^ {2} ] \) GeV,并发现我们的结果表明,Parkes与ASKAP一起可以约束SCS的参数空间。

该文章的预印本可从ArXiv获得。
更新日期:2020-06-03
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