Listening for dark photon radio signals from the Galactic Center
Listening for dark photon radio signals from the Galactic Center
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DOI：
10.1103/physrevd.107.115035
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发表时间：
2022-12
影响因子：
5
通讯作者：
Edward Hardy;N. Song
中科院分区：
文献类型：
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作者：
Edward Hardy;N. Song
暗光子暗物质与标准模型光子有动力学混合，在其质量与等离子体频率一致的环境中可以共振转换。我们表明，在中子星或星系中心的吸积白色矮星的这种转换可以导致可检测的无线电信号。根据暗物质的空间分布，未来的射电望远镜可能对超过电流限制的动力学混合参数值敏感，其数量级为$m_{A '}\in \left（6\times 10^{-6}，7\times 10^{-4}\right）$ eV。
Dark photon dark matter that has a kinetic mixing with the Standard Model photon can resonantly convert in environments where its mass $m_{A'}$ coincides with the plasma frequency. We show that such conversion in neutron stars or accreting white dwarfs in the galactic centre can lead to detectable radio signals. Depending on the dark matter spatial distribution, future radio telescopes could be sensitive to values of the kinetic mixing parameter that exceed current constraints by orders of magnitude for $m_{A'} \in \left(6\times 10^{-6},7\times 10^{-4}\right)$ eV.