论文标题
直接使用射电望远镜直接检测暗光子暗物质
Direct detection of dark photon dark matter using radio telescopes
论文作者
论文摘要
深色光子可以是超轻的暗物质候选者，通过动力学混合与标准模型颗粒相互作用。我们建议通过不同射电望远镜的局部吸收来搜索超轻的暗光子暗物质（DPDM）。局部DPDM可以诱导射电望远镜天线内电子的谐波振荡。它导致单色无线电信号，可以由望远镜接收器记录。使用来自快速望远镜的观察数据，动力学混合的上限已经可以达到$ 10^{ - 12} $，DPDM振荡频率以$ 1-1.5 $ GHz的价格达到了$ 1-1.5 $ GHz，这比宇宙微波背景约束要高约一个数量级。此外，诸如Lofar和Ska1望远镜之类的大规模干涉阵列可以实现从10 MHz到10 GHz的直接DPDM搜索的非凡敏感性。
Dark photons can be the ultralight dark matter candidate, interacting with Standard Model particles via kinetic mixing. We propose to search for ultralight dark photon dark matter (DPDM) through the local absorption at different radio telescopes. The local DPDM can induce harmonic oscillations of electrons inside the antenna of radio telescopes. It leads to a monochromatic radio signal and can be recorded by telescope receivers. Using the observation data from the FAST telescope, the upper limit on the kinetic mixing can already reach $10^{-12}$ for DPDM oscillation frequencies at $1-1.5$ GHz, which is stronger than the cosmic microwave background constraint by about one order of magnitude. Furthermore, large-scale interferometric arrays like LOFAR and SKA1 telescopes can achieve extraordinary sensitivities for direct DPDM search from 10 MHz to 10 GHz.
