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arXiv 1909.09475hep-phastro-ph.COphysics.atom-ph
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Axion夸克金块以及全球网络如何发现它们

Axion Quark Nuggets and how a Global Network can discover them

Dmitry Budker, Victor V. Flambaum, Xunyu Liang, Ariel Zhitnitsky

摘要:

我们主张这样一种观点,即地球表面轴子通量的日调制和年调制的存在可能会极大地改变轴子搜索的策略。我们的计算是基于所谓的Axion夸克块金(AQN)暗物质模型,该模型最初是为了解释暗物质和可见宇宙物质密度的相似性而提出的$Ω_{\rm dark}\sim Ω_{\rm visible}$。在我们的框架中,具有质量$ 10^{-6} {\rm eV}\lesssim m_a\lesssim 10^{-3}{\rm eV}$和速度$< v_a>\sim 10^{-3} c$的星系轴子的人口将总是伴随着由AQN发射的具有典型速度$<v_a>\sim 0.6 c$的轴子。我们制定了宽带检测策略,通过研究日调制和年调制来寻找这样的相对论性轴子。我们描述了几个测试,可以有效地区分一个真正的信号从噪声。这些AQN起源的轴子可以作为相关事件被观察到,这些事件可以被全球网络中的同步站记录下来。如果探测器的距离小于几百公里,就可以有效地研究相关性。

英文摘要:

We advocate an idea that the presence of the daily and annual modulations of the axion flux on the Earth surface may dramatically change the strategy of the axion searches. Our computations are based on the so-called Axion Quark Nugget (AQN) dark matter model which was originally put forward to explain the similarity of the dark and visible cosmological matter densities $Ω_{\rm dark}\sim Ω_{\rm visible}$. In our framework, the population of galactic axions with mass $ 10^{-6} {\rm eV}\lesssim m_a\lesssim 10^{-3}{\rm eV}$ and velocity $< v_a>\sim 10^{-3} c$ will be always accompanied by the axions with typical velocities $<v_a>\sim 0.6 c$ emitted by AQNs. We formulate the broadband detection strategy to search for such relativistic axions by studying the daily and annual modulations. We describe several tests which could effectively discriminate a true signal from noise. These AQN-originated axions can be observed as correlated events which could be recorded by synchronized stations in the global network. The correlations can be effectively studied if the detectors are positioned at distances shorter than a few hundred kilometres.

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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