论文标题
深色光子暗物质和快速无线电爆发
Dark photon dark matter and fast radio bursts
论文作者
论文摘要
暗物质（DM）的性质仍然是一个谜，可能表明标准模型扩展的必要性（SM）。光暗光子（DP）可能部分或完全构成观察到的DM密度和DP DM参数空间的现有限制，这是由几个宇宙学和天体物理来源引起的。在目前的工作中，我们使用宇宙瞬变，特别是快速无线电爆发（FRB）研究DP DM。例如，使用不同能量的无线电光子的时间延迟已用于约束光子质量或弱等效原理。由于可见光和DP之间的混合，这些宇宙瞬变的光子的时间延迟，这是由播层间介质中的游离电子引起的，可以改变并影响FRB的这些约束。我们使用五个检测到的FRB和两种具有γ射线爆发的FRB的关联，以研究由DP DM引起的时间延迟的通讯变化。结果实际上与所使用的FRB无关，并且考虑到仍然允许的DP DM参数空间，而不是在观察到的时间延迟的其他贡献上危害电流边界。
The nature of dark matter (DM) is still a mystery that may indicate the necessity for extensions of the Standard Model (SM). Light dark photons (DP) may comprise partially or entirely the observed DM density and existing limits on the DP DM parameter space arise from several cosmological and astrophysical sources. In the present work we investigate DP DM using cosmic transients, specifically fast radio bursts (FRBs). The observed time delay of radio photons with different energies have been used to constrain the photon mass or the Weak Equivalence Principle, for example. Due to the mixing between the visible and the DP, the time delay of photons from these cosmic transients, caused by free electrons in the intergalactic medium, can change and impact those constraints from FRBs. We use five detected FRBs and two associations of FRBs with gamma-ray bursts to investigate the correspondent variation on the time delay caused by the presence of DP DM. The result is virtually independent of the FRB used and this variation is very small, considering the still allowed DP DM parameter space, not jeopardizing current bounds on other contributions of the observed time delay.
