Transient Radio Signatures from Neutron Star Encounters with QCD Axion Miniclusters,Physical Review Letters

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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 (1 - 100) {day}^{- 1}

], 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[