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Transient Radio Signatures from Neutron Star Encounters with QCD Axion Miniclusters
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-09-23 , DOI: 10.1103/physrevlett.127.131103
Thomas D P Edwards 1, 2 , Bradley J Kavanagh 2, 3 , Luca Visinelli 2, 4 , Christoph Weniger 2
Affiliation  

The QCD axion is expected to form dense structures known as axion miniclusters if the Peccei-Quinn symmetry is broken after inflation. Miniclusters that have survived until today will interact with neutron stars (NSs) in the Milky Way to produce transient radio signals from axion-photon conversion in the NS magnetosphere. We quantify the properties of these encounters and find that they occur frequently [O(1100)day1], last between a day and a few months, are spatially clustered toward the Galactic Center, and can reach observable fluxes. These radio transients are within reach of current generation telescopes and therefore offer a promising pathway to discovering QCD axion dark matter.

中文翻译:

来自中子星与 QCD 轴子微簇相遇的瞬态无线电特征

如果 Peccei-Quinn 对称性在膨胀后被破坏,QCD 轴子预计会形成称为轴子微型簇的致密结构。幸存到今天的微型星团将与银河系中的中子星 (NS) 相互作用,以通过 NS 磁层中的轴子-光子转换产生瞬态无线电信号。我们量化了这些遭遇的性质,发现它们经常发生[(1——100)-1],持续一天到几个月,在空间上聚集在银河系中心,并且可以达到可观测的通量。这些无线电瞬变在当代望远镜的范围内,因此为发现 QCD 轴子暗物质提供了一条有希望的途径。
更新日期:2021-09-24
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